{"id":88144,"date":"2026-07-31T15:25:27","date_gmt":"2026-07-31T07:25:27","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/88144.html"},"modified":"2026-07-31T15:25:27","modified_gmt":"2026-07-31T07:25:27","slug":"node-js-langchain-js-milvus-%e5%ae%9e%e6%88%98%ef%bc%9a%e4%bb%8e-epub-%e5%85%a5%e5%ba%93%e5%88%b0%e3%80%8a%e5%a4%a9%e9%be%99%e5%85%ab%e9%83%a8%e3%80%8brag-%e9%97%ae%e7%ad%94%e7%b3%bb%e7%bb%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/88144.html","title":{"rendered":"Node.js + LangChain.js + Milvus \u5b9e\u6218\uff1a\u4ece EPUB \u5165\u5e93\u5230\u300a\u5929\u9f99\u516b\u90e8\u300bRAG \u95ee\u7b54\u7cfb\u7edf"},"content":{"rendered":"<\/p>\n<h4>Node.js &#043; LangChain.js &#043; Milvus \u5b9e\u6218&#xff1a;\u4ece EPUB \u5165\u5e93\u5230\u300a\u5929\u9f99\u516b\u90e8\u300bRAG \u95ee\u7b54\u7cfb\u7edf<\/h4>\n<ul>\n<li>\u524d\u8a00<\/li>\n<li>1. \u9879\u76ee\u76ee\u6807\u4e0e\u6838\u5fc3\u539f\u7406<\/li>\n<li>\n<ul>\n<li>1.1 \u4e3a\u4ec0\u4e48\u9700\u8981 RAG<\/li>\n<li>1.2 Embedding\u3001Chunk \u4e0e VectorStore<\/li>\n<li>1.3 \u9879\u76ee\u7684\u4e24\u6761\u6570\u636e\u94fe\u8def<\/li>\n<\/ul>\n<\/li>\n<li>2. \u521d\u59cb\u5316\u9879\u76ee\u4e0e\u5b89\u88c5\u4f9d\u8d56<\/li>\n<li>\n<ul>\n<li>2.1 \u4f7f\u7528 npm \u521d\u59cb\u5316<\/li>\n<li>2.2 \u4f7f\u7528 pnpm \u5b89\u88c5\u5168\u90e8\u4f9d\u8d56<\/li>\n<li>2.3 \u914d\u7f6e\u76ee\u5f55\u4e0e\u73af\u5883\u53d8\u91cf<\/li>\n<\/ul>\n<\/li>\n<li>3. &#096;main.mjs&#096;&#xff1a;\u52a0\u8f7d EPUB \u5e76\u5efa\u7acb\u5411\u91cf\u77e5\u8bc6\u5e93<\/li>\n<li>\n<ul>\n<li>3.1 \u6587\u4ef6\u804c\u8d23\u4e0e\u603b\u4f53\u6d41\u7a0b<\/li>\n<li>3.2 \u5bfc\u5165\u6a21\u5757\u3001\u8bfb\u53d6\u914d\u7f6e\u5e76\u521d\u59cb\u5316 Embedding<\/li>\n<li>3.3 \u5c01\u88c5\u5411\u91cf\u51fd\u6570\u5e76\u521b\u5efa Milvus \u5ba2\u6237\u7aef<\/li>\n<li>3.4 \u521b\u5efa Collection\u3001\u5b57\u6bb5\u4e0e\u7d22\u5f15<\/li>\n<li>3.5 \u52a0\u8f7d EPUB \u5e76\u9012\u5f52\u5207\u7247<\/li>\n<li>3.6 \u5e76\u53d1\u751f\u6210\u7247\u6bb5\u5411\u91cf\u5e76\u6279\u91cf\u63d2\u5165<\/li>\n<li>3.7 \u5165\u53e3\u51fd\u6570\u4e32\u8054\u5168\u90e8\u5165\u5e93\u6b65\u9aa4<\/li>\n<\/ul>\n<\/li>\n<li>4. &#096;query.mjs&#096;&#xff1a;\u9a8c\u8bc1 Milvus \u5411\u91cf\u68c0\u7d22<\/li>\n<li>\n<ul>\n<li>4.1 \u6587\u4ef6\u804c\u8d23\u4e0e\u603b\u4f53\u6d41\u7a0b<\/li>\n<li>4.2 \u5bfc\u5165\u4f9d\u8d56\u5e76\u521d\u59cb\u5316\u67e5\u8be2\u7ec4\u4ef6<\/li>\n<li>4.3 \u641c\u7d22 Top 3 \u5e76\u6253\u5370\u7ed3\u679c<\/li>\n<\/ul>\n<\/li>\n<li>5. &#096;rag.mjs&#096;&#xff1a;\u7ec4\u5408\u68c0\u7d22\u7ed3\u679c\u5e76\u751f\u6210\u7b54\u6848<\/li>\n<li>\n<ul>\n<li>5.1 \u6587\u4ef6\u804c\u8d23\u4e0e\u603b\u4f53\u6d41\u7a0b<\/li>\n<li>5.2 \u521d\u59cb\u5316 Embedding\u3001ChatOpenAI \u4e0e Milvus<\/li>\n<li>5.3 \u5c01\u88c5 Retriever \u68c0\u7d22\u51fd\u6570<\/li>\n<li>5.4 \u6784\u9020\u4e0a\u4e0b\u6587\u4e0e Prompt<\/li>\n<li>5.5 \u6267\u884c\u5b8c\u6574 RAG \u95ee\u7b54<\/li>\n<\/ul>\n<\/li>\n<li>6. \u8fd0\u884c\u987a\u5e8f\u4e0e\u7ed3\u679c\u9a8c\u8bc1<\/li>\n<li>\n<ul>\n<li>6.1 \u7b2c\u4e00\u6b21\u8fd0\u884c\u7684\u6b63\u786e\u987a\u5e8f<\/li>\n<li>6.2 \u5e38\u89c1\u8fd0\u884c\u73b0\u8c61\u4e0e\u6392\u67e5\u65b9\u5411<\/li>\n<\/ul>\n<\/li>\n<li>7. \u4e09\u4e2a\u6587\u4ef6\u7684\u5b8c\u6574\u6d41\u7a0b\u590d\u76d8<\/li>\n<li>\n<ul>\n<li>7.1 \u4ece\u7535\u5b50\u4e66\u5230\u5411\u91cf\u6570\u636e\u5e93<\/li>\n<li>7.2 \u4ece\u95ee\u9898\u5230\u76f8\u4f3c\u7247\u6bb5<\/li>\n<li>7.3 \u4ece\u76f8\u4f3c\u7247\u6bb5\u5230\u81ea\u7136\u8bed\u8a00\u7b54\u6848<\/li>\n<\/ul>\n<\/li>\n<li>\u603b\u7ed3<\/li>\n<\/ul>\n<h2>\u524d\u8a00<\/h2>\n<p>\u8ba9\u5927\u6a21\u578b\u56de\u7b54\u4e00\u90e8\u4e00\u767e\u591a\u4e07\u5b57\u7684\u5c0f\u8bf4&#xff0c;\u771f\u6b63\u7684\u96be\u70b9\u5e76\u4e0d\u5728\u201c\u8c03\u7528\u4e00\u6b21\u804a\u5929\u63a5\u53e3\u201d&#xff0c;\u800c\u5728\u4e8e\u5982\u4f55\u8ba9\u6a21\u578b\u627e\u5230\u4e0e\u95ee\u9898\u6709\u5173\u7684\u539f\u6587\u3002\u6574\u672c\u7535\u5b50\u4e66\u65e0\u6cd5\u76f4\u63a5\u585e\u8fdb\u4e00\u6b21\u8bf7\u6c42&#xff0c;\u6a21\u578b\u672c\u8eab\u4e5f\u4e0d\u4e00\u5b9a\u51c6\u786e\u8bb0\u5f97\u6bcf\u4e00\u5904\u4eba\u7269\u3001\u6b66\u529f\u548c\u60c5\u8282\u7ec6\u8282\u3002\u8981\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898&#xff0c;\u9700\u8981\u5148\u628a\u7535\u5b50\u4e66\u52a0\u5de5\u6210\u4e00\u4e2a\u53ef\u4ee5\u6309\u8bed\u4e49\u68c0\u7d22\u7684\u77e5\u8bc6\u5e93\u3002<\/p>\n<p>**RAG&#xff08;Retrieval-Augmented Generation&#xff0c;\u68c0\u7d22\u589e\u5f3a\u751f\u6210&#xff09;**\u7684\u601d\u8def\u5f88\u76f4\u63a5&#xff1a;\u5148\u4ece\u5916\u90e8\u77e5\u8bc6\u5e93\u68c0\u7d22\u76f8\u5173\u5185\u5bb9&#xff0c;\u518d\u628a\u68c0\u7d22\u7ed3\u679c\u8fde\u540c\u7528\u6237\u95ee\u9898\u4e00\u8d77\u4ea4\u7ed9\u5927\u6a21\u578b\u3002\u8fd9\u6837\u4e00\u6765&#xff0c;Milvus \u8d1f\u8d23\u201c\u627e\u5230\u539f\u6587\u201d&#xff0c;\u5927\u6a21\u578b\u8d1f\u8d23\u201c\u7ed3\u5408\u539f\u6587\u7ec4\u7ec7\u7b54\u6848\u201d&#xff0c;\u4e24\u90e8\u5206\u804c\u8d23\u6e05\u6670&#xff0c;\u4e5f\u4fbf\u4e8e\u5206\u9636\u6bb5\u8c03\u8bd5\u3002<\/p>\n<p>\u672c\u9879\u76ee\u4f7f\u7528 Node.js\u3001LangChain.js\u3001OpenAI \u517c\u5bb9\u63a5\u53e3\u4e0e Milvus&#xff0c;\u56f4\u7ed5\u300a\u5929\u9f99\u516b\u90e8\u300bEPUB \u5b8c\u6210\u4e00\u6761\u5b8c\u6574\u94fe\u8def\u3002\u9879\u76ee\u7684\u7f16\u5199\u548c\u8bb2\u89e3\u987a\u5e8f\u4e25\u683c\u4fdd\u6301\u4e3a&#xff1a;<\/p>\n<ul>\n<li>main.mjs&#xff1a;\u52a0\u8f7d EPUB\u3001\u5207\u5206\u7ae0\u8282\u3001\u751f\u6210\u5411\u91cf\u5e76\u5199\u5165 Milvus&#xff1b;<\/li>\n<li>query.mjs&#xff1a;\u628a\u95ee\u9898\u8f6c\u6362\u4e3a\u5411\u91cf&#xff0c;\u9a8c\u8bc1 Milvus \u7684\u76f8\u4f3c\u5ea6\u68c0\u7d22\u7ed3\u679c&#xff1b;<\/li>\n<li>rag.mjs&#xff1a;\u628a\u53ec\u56de\u7247\u6bb5\u7ec4\u88c5\u6210\u4e0a\u4e0b\u6587&#xff0c;\u8c03\u7528\u804a\u5929\u6a21\u578b\u751f\u6210\u7b54\u6848\u3002<\/li>\n<\/ul>\n<p>\u4e0b\u9762\u4e0d\u4f1a\u4e00\u6b21\u6027\u5806\u51fa\u4e09\u4e2a\u5b8c\u6574\u6587\u4ef6&#xff0c;\u800c\u662f\u6309\u7167\u6e90\u7801\u987a\u5e8f\u5206\u5757\u8bb2\u89e3\u3002\u6bcf\u4e2a JavaScript \u4ee3\u7801\u5757\u90fd\u76f4\u63a5\u53d6\u81ea\u9879\u76ee\u6e90\u7801&#xff0c;\u6309\u987a\u5e8f\u62fc\u63a5\u540e\u5c31\u662f\u5bf9\u5e94\u6587\u4ef6\u7684\u539f\u59cb\u4ee3\u7801\u3002<\/p>\n<h2>1. \u9879\u76ee\u76ee\u6807\u4e0e\u6838\u5fc3\u539f\u7406<\/h2>\n<h3>1.1 \u4e3a\u4ec0\u4e48\u9700\u8981 RAG<\/h3>\n<p>\u53ea\u628a\u201c\u6bb5\u8a89\u4f1a\u4ec0\u4e48\u6b66\u529f\u201d\u4ea4\u7ed9\u5927\u6a21\u578b&#xff0c;\u6a21\u578b\u4f1a\u6839\u636e\u8bad\u7ec3\u9636\u6bb5\u5f62\u6210\u7684\u53c2\u6570\u77e5\u8bc6\u56de\u7b54\u3002\u9762\u5bf9\u5c0f\u8bf4\u3001\u4f01\u4e1a\u6587\u6863\u3001\u5185\u90e8\u624b\u518c\u7b49\u8d44\u6599\u65f6&#xff0c;\u8fd9\u79cd\u65b9\u5f0f\u5b58\u5728\u51e0\u4e2a\u660e\u663e\u9650\u5236&#xff1a;<\/p>\n<ul>\n<li>\u5185\u5bb9\u5bb9\u91cf\u6709\u9650&#xff1a;\u6574\u672c\u4e66\u8fdc\u8fdc\u8d85\u8fc7\u4e00\u6b21\u8bf7\u6c42\u9002\u5408\u627f\u8f7d\u7684\u6587\u672c\u91cf&#xff1b;<\/li>\n<li>\u7ec6\u8282\u4e0d\u53ef\u63a7&#xff1a;\u6a21\u578b\u53ef\u80fd\u77e5\u9053\u4e3b\u8981\u4eba\u7269&#xff0c;\u5374\u4e0d\u4e00\u5b9a\u8bb0\u5f97\u5177\u4f53\u60c5\u8282&#xff1b;<\/li>\n<li>\u56de\u7b54\u96be\u4ee5\u9a8c\u8bc1&#xff1a;\u6ca1\u6709\u68c0\u7d22\u7247\u6bb5\u65f6&#xff0c;\u5f88\u96be\u5224\u65ad\u7b54\u6848\u6765\u81ea\u539f\u6587\u8fd8\u662f\u6a21\u578b\u63a8\u6d4b&#xff1b;<\/li>\n<li>\u77e5\u8bc6\u66f4\u65b0\u9ebb\u70e6&#xff1a;\u8d44\u6599\u53d8\u5316\u540e&#xff0c;\u76f4\u63a5\u66f4\u65b0\u77e5\u8bc6\u5e93\u6bd4\u91cd\u65b0\u8bad\u7ec3\u6a21\u578b\u66f4\u7075\u6d3b\u3002<\/li>\n<\/ul>\n<p>RAG \u5c06\u7cfb\u7edf\u62c6\u6210\u201c\u68c0\u7d22\u201d\u548c\u201c\u751f\u6210\u201d\u4e24\u4e2a\u9636\u6bb5\u3002\u68c0\u7d22\u9636\u6bb5\u5148\u4ece Milvus \u627e\u5230\u4e0e\u95ee\u9898\u6700\u76f8\u8fd1\u7684\u7247\u6bb5&#xff1b;\u751f\u6210\u9636\u6bb5\u518d\u8ba9\u804a\u5929\u6a21\u578b\u57fa\u4e8e\u8fd9\u4e9b\u7247\u6bb5\u56de\u7b54\u3002<\/p>\n<table>\n<tr>\u65b9\u6848\u5339\u914d\u4f9d\u636e\u80fd\u505a\u4ec0\u4e48\u4e3b\u8981\u7279\u70b9<\/tr>\n<tbody>\n<tr>\n<td>\u5173\u952e\u8bcd\u68c0\u7d22<\/td>\n<td>\u6587\u672c\u4e2d\u662f\u5426\u51fa\u73b0\u76f8\u540c\u8bcd\u8bed<\/td>\n<td>\u627e\u5230\u5b57\u9762\u5339\u914d\u5185\u5bb9<\/td>\n<td>\u7b80\u5355\u76f4\u63a5&#xff0c;\u4f46\u4e0d\u64c5\u957f\u7406\u89e3\u540c\u4e49\u8868\u8fbe<\/td>\n<\/tr>\n<tr>\n<td>\u5411\u91cf\u68c0\u7d22<\/td>\n<td>\u6587\u672c\u5411\u91cf\u4e4b\u95f4\u7684\u8ddd\u79bb<\/td>\n<td>\u627e\u5230\u8bed\u4e49\u76f8\u8fd1\u5185\u5bb9<\/td>\n<td>\u80fd\u8bc6\u522b\u4e0d\u540c\u8bf4\u6cd5\u80cc\u540e\u7684\u76f8\u8fd1\u542b\u4e49<\/td>\n<\/tr>\n<tr>\n<td>RAG<\/td>\n<td>\u5411\u91cf\u53ec\u56de &#043; \u5927\u6a21\u578b\u751f\u6210<\/td>\n<td>\u68c0\u7d22\u8d44\u6599\u5e76\u7ec4\u7ec7\u81ea\u7136\u8bed\u8a00\u7b54\u6848<\/td>\n<td>\u540c\u65f6\u5229\u7528\u5916\u90e8\u77e5\u8bc6\u4e0e\u6a21\u578b\u8868\u8fbe\u80fd\u529b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>1.2 Embedding\u3001Chunk \u4e0e VectorStore<\/h3>\n<p>Embedding \u662f\u628a\u4e00\u6bb5\u6587\u672c\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570\u5411\u91cf\u7684\u8fc7\u7a0b\u3002\u8bed\u4e49\u76f8\u8fd1\u7684\u6587\u672c&#xff0c;\u901a\u5e38\u4f1a\u5728\u5411\u91cf\u7a7a\u95f4\u4e2d\u62e5\u6709\u66f4\u63a5\u8fd1\u7684\u65b9\u5411\u6216\u4f4d\u7f6e\u3002<\/p>\n<p>\u9879\u76ee\u5c06\u7535\u5b50\u4e66\u62c6\u6210\u591a\u4e2a\u6587\u672c\u7247\u6bb5&#xff0c;\u518d\u628a\u6bcf\u4e2a\u7247\u6bb5\u8f6c\u6362\u4e3a\u5411\u91cf\u3002\u7528\u6237\u63d0\u95ee\u65f6&#xff0c;\u95ee\u9898\u4e5f\u4f1a\u88ab\u8f6c\u6362\u4e3a\u5411\u91cf&#xff0c;\u7136\u540e\u7531 Milvus \u6bd4\u8f83\u95ee\u9898\u5411\u91cf\u4e0e\u6587\u6863\u5411\u91cf\u7684\u76f8\u4f3c\u7a0b\u5ea6\u3002<\/p>\n<p>\u8fd9\u91cc\u6d89\u53ca\u4e09\u4e2a\u57fa\u7840\u6982\u5ff5&#xff1a;<\/p>\n<ul>\n<li>Chunk&#xff1a;\u4ece\u957f\u6587\u672c\u4e2d\u5207\u51fa\u6765\u7684\u5c0f\u7247\u6bb5&#xff0c;\u662f\u68c0\u7d22\u548c\u5165\u5e93\u7684\u57fa\u672c\u5355\u4f4d&#xff1b;<\/li>\n<li>Embedding&#xff1a;Chunk \u6216\u95ee\u9898\u7ecf\u8fc7\u6a21\u578b\u8ba1\u7b97\u540e\u5f97\u5230\u7684\u6570\u503c\u5411\u91cf&#xff1b;<\/li>\n<li>VectorStore&#xff1a;\u4fdd\u5b58\u5411\u91cf\u3001\u539f\u6587\u548c\u5143\u6570\u636e&#xff0c;\u5e76\u652f\u6301\u76f8\u4f3c\u5ea6\u641c\u7d22\u7684\u6570\u636e\u5e93&#xff0c;\u672c\u9879\u76ee\u4f7f\u7528 Milvus\u3002<\/li>\n<\/ul>\n<p>\u9879\u76ee\u4f7f\u7528 MetricType.COSINE \u8ba1\u7b97\u4f59\u5f26\u76f8\u4f3c\u5ea6\u3002\u5176\u6838\u5fc3\u516c\u5f0f\u4e3a&#xff1a;<\/p>\n<p><span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         cosine<\/p>\n<p>         \u2061<\/p>\n<p>         (<\/p>\n<p>         q<\/p>\n<p>         ,<\/p>\n<p>         d<\/p>\n<p>         )<\/p>\n<p>         &#061;<\/p>\n<p>           q<\/p>\n<p>           \u22c5<\/p>\n<p>           d<\/p>\n<p>           \u2225<\/p>\n<p>           q<\/p>\n<p>           \u2225<\/p>\n<p>           \u2225<\/p>\n<p>           d<\/p>\n<p>           \u2225<\/p>\n<p>         \\\\operatorname{cosine}(q,d)&#061;\\\\frac{q\\\\cdot d}{\\\\lVert q\\\\rVert\\\\lVert d\\\\rVert} <\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mop\"><span class=\"mord mathrm\">cosine<\/span><\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">q<\/span><span class=\"mpunct\">,<\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord mathnormal\">d<\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 2.3074em;vertical-align: -0.936em\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.3714em\"><span class=\"\" style=\"top: -2.314em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mopen\">\u2225<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">q<\/span><span class=\"mclose\">\u2225<\/span><span class=\"mopen\">\u2225<\/span><span class=\"mord mathnormal\">d<\/span><span class=\"mclose\">\u2225<\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em\"><\/span><\/span><span class=\"\" style=\"top: -3.677em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0359em\">q<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u22c5<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mord mathnormal\">d<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.936em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p>\u5176\u4e2d q \u8868\u793a\u95ee\u9898\u5411\u91cf&#xff0c;d \u8868\u793a\u6587\u6863\u7247\u6bb5\u5411\u91cf\u3002\u4e8c\u8005\u65b9\u5411\u8d8a\u63a5\u8fd1&#xff0c;\u8bed\u4e49\u901a\u5e38\u8d8a\u76f8\u4f3c\u3002\u641c\u7d22\u7ed3\u679c\u4e2d\u7684 score \u5c31\u662f\u6392\u5e8f\u7684\u91cd\u8981\u4f9d\u636e&#xff0c;\u4ee3\u7801\u4f1a\u628a\u5b83\u4fdd\u7559\u56db\u4f4d\u5c0f\u6570\u8f93\u51fa\u3002<\/p>\n<h3>1.3 \u9879\u76ee\u7684\u4e24\u6761\u6570\u636e\u94fe\u8def<\/h3>\n<p>\u9879\u76ee\u5206\u4e3a\u79bb\u7ebf\u5165\u5e93\u548c\u5728\u7ebf\u95ee\u7b54\u4e24\u6761\u94fe\u8def\u3002<\/p>\n<p>\u79bb\u7ebf\u5165\u5e93\u7531 main.mjs \u5b8c\u6210&#xff1a;<\/p>\n<p>EPUB \u2192 Document \u2192 Chunk \u2192 Embedding \u2192 Milvus<\/p>\n<p>\u5728\u7ebf\u67e5\u8be2\u4e0e\u95ee\u7b54\u7531 query.mjs\u3001rag.mjs \u5b8c\u6210&#xff1a;<\/p>\n<p>\u7528\u6237\u95ee\u9898 \u2192 \u95ee\u9898\u5411\u91cf \u2192 Top K \u7247\u6bb5 \u2192 Prompt \u2192 \u5927\u6a21\u578b\u7b54\u6848<\/p>\n<p>\u4e09\u4e2a\u6587\u4ef6\u4e4b\u95f4\u4e0d\u662f\u5e73\u884c\u5173\u7cfb&#xff0c;\u800c\u662f\u5b58\u5728\u660e\u786e\u7684\u524d\u7f6e\u987a\u5e8f&#xff1a;<\/p>\n<table>\n<tr>\u6587\u4ef6\u8f93\u5165\u6838\u5fc3\u4efb\u52a1\u8f93\u51fa<\/tr>\n<tbody>\n<tr>\n<td>main.mjs<\/td>\n<td>\u5929\u9f99\u516b\u90e8.epub<\/td>\n<td>\u521b\u5efa\u96c6\u5408\u3001\u5207\u7247\u3001\u751f\u6210\u5411\u91cf\u5e76\u5165\u5e93<\/td>\n<td>Milvus \u4e2d\u7684\u77e5\u8bc6\u5e93\u8bb0\u5f55<\/td>\n<\/tr>\n<tr>\n<td>query.mjs<\/td>\n<td>\u201c\u6bb5\u8a89\u4f1a\u4ec0\u4e48\u6b66\u529f?\u201d<\/td>\n<td>\u6267\u884c Top 3 \u5411\u91cf\u641c\u7d22<\/td>\n<td>\u5206\u6570\u3001\u4e3b\u952e\u3001\u4e66\u7c4d ID \u548c\u539f\u6587<\/td>\n<\/tr>\n<tr>\n<td>rag.mjs<\/td>\n<td>\u201c\u9e20\u6469\u667a\u4f1a\u4ec0\u4e48\u6b66\u529f&#xff1f;\u201d<\/td>\n<td>\u68c0\u7d22 Top 5 \u7247\u6bb5\u5e76\u8c03\u7528\u804a\u5929\u6a21\u578b<\/td>\n<td>\u57fa\u4e8e\u5c0f\u8bf4\u7247\u6bb5\u751f\u6210\u7684\u56de\u7b54<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5f53\u524d EPUB \u7ecf EPubLoader \u89e3\u6790\u540e\u4f1a\u5f97\u5230 168 \u4e2a Document&#xff0c;\u603b\u6587\u672c\u91cf\u7ea6 124.5 \u4e07\u5b57\u7b26&#xff1b;\u4f7f\u7528 chunkSize: 500\u3001chunkOverlap: 50 \u5207\u5206\u540e&#xff0c;\u53ef\u4ee5\u5f62\u6210\u7ea6 3042 \u4e2a\u7247\u6bb5\u3002\u8fd9\u91cc\u7684 168 \u662f EPUB \u5185\u90e8\u6587\u6863\u8282\u70b9\u6570\u91cf&#xff0c;\u5176\u4e2d\u53ef\u80fd\u5305\u542b\u5185\u5bb9\u7b80\u4ecb\u3001\u5e8f\u8a00\u3001\u56de\u76ee\u548c\u5176\u4ed6\u9875\u9762&#xff0c;\u56e0\u6b64\u4ee3\u7801\u4e2d\u7684 chapter_num \u8868\u793a\u52a0\u8f7d\u540e\u7684\u6587\u6863\u987a\u5e8f\u3002<\/p>\n<h2>2. \u521d\u59cb\u5316\u9879\u76ee\u4e0e\u5b89\u88c5\u4f9d\u8d56<\/h2>\n<h3>2.1 \u4f7f\u7528 npm \u521d\u59cb\u5316<\/h3>\n<p>\u5148\u521b\u5efa\u9879\u76ee\u76ee\u5f55\u5e76\u8fdb\u5165\u8be5\u76ee\u5f55&#xff1a;<\/p>\n<p><span class=\"token function\">mkdir<\/span> tlbb<br \/>\n<span class=\"token builtin class-name\">cd<\/span> tlbb<br \/>\n<span class=\"token function\">npm<\/span> init <span class=\"token parameter variable\">-y<\/span><\/p>\n<p>npm init -y \u4f1a\u5feb\u901f\u751f\u6210 package.json\u3002\u4e09\u4e2a\u6e90\u7801\u6587\u4ef6\u4f7f\u7528 .mjs \u6269\u5c55\u540d&#xff0c;Node.js \u4f1a\u6309\u7167 ES Module \u89e3\u6790&#xff0c;\u56e0\u6b64\u4ee3\u7801\u4e2d\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528 import\u3002<\/p>\n<h3>2.2 \u4f7f\u7528 pnpm \u5b89\u88c5\u5168\u90e8\u4f9d\u8d56<\/h3>\n<p>\u9879\u76ee\u9700\u8981\u5b89\u88c5\u4ee5\u4e0b\u5168\u90e8\u4f9d\u8d56&#xff1a;<\/p>\n<p><span class=\"token function\">pnpm<\/span> i &#064;langchain\/community &#064;langchain\/core &#064;langchain\/openai &#064;langchain\/textsplitters &#064;zilliz\/milvus2-sdk-node dotenv epub2 html-to-text<\/p>\n<p>\u5404\u4f9d\u8d56\u7684\u804c\u8d23\u5982\u4e0b&#xff1a;<\/p>\n<table>\n<tr>\u4f9d\u8d56\u6838\u5fc3\u4f5c\u7528\u5728\u9879\u76ee\u4e2d\u7684\u4f4d\u7f6e<\/tr>\n<tbody>\n<tr>\n<td>dotenv<\/td>\n<td>\u628a .env \u52a0\u8f7d\u5230 process.env<\/td>\n<td>\u4e09\u4e2a\u6587\u4ef6\u9876\u90e8\u7684 import &#039;dotenv\/config&#039;<\/td>\n<\/tr>\n<tr>\n<td>&#064;langchain\/core<\/td>\n<td>\u63d0\u4f9b LangChain \u7684\u6838\u5fc3\u62bd\u8c61<\/td>\n<td>LangChain \u7ec4\u4ef6\u8fd0\u884c\u6240\u4f9d\u8d56\u7684\u57fa\u7840\u80fd\u529b<\/td>\n<\/tr>\n<tr>\n<td>&#064;langchain\/community<\/td>\n<td>\u63d0\u4f9b\u793e\u533a Loader<\/td>\n<td>EPubLoader \u4ece EPUB \u52a0\u8f7d\u6587\u6863<\/td>\n<\/tr>\n<tr>\n<td>&#064;langchain\/textsplitters<\/td>\n<td>\u63d0\u4f9b\u6587\u672c\u5207\u5206\u5668<\/td>\n<td>RecursiveCharacterTextSplitter \u62c6\u5206\u7ae0\u8282<\/td>\n<\/tr>\n<tr>\n<td>&#064;langchain\/openai<\/td>\n<td>\u5bf9\u63a5 OpenAI \u517c\u5bb9\u63a5\u53e3<\/td>\n<td>OpenAIEmbeddings \u4e0e ChatOpenAI<\/td>\n<\/tr>\n<tr>\n<td>&#064;zilliz\/milvus2-sdk-node<\/td>\n<td>Node.js \u7248 Milvus SDK<\/td>\n<td>\u521b\u5efa\u96c6\u5408\u3001\u7d22\u5f15\u3001\u63d2\u5165\u4e0e\u641c\u7d22<\/td>\n<\/tr>\n<tr>\n<td>epub2<\/td>\n<td>\u89e3\u6790 EPUB \u7684\u5185\u90e8\u7ed3\u6784<\/td>\n<td>EPubLoader \u7684\u8fd0\u884c\u65f6\u4f9d\u8d56<\/td>\n<\/tr>\n<tr>\n<td>html-to-text<\/td>\n<td>\u628a\u7ae0\u8282 HTML \u8f6c\u4e3a\u7eaf\u6587\u672c<\/td>\n<td>\u4e3a\u5207\u7247\u548c Embedding \u63d0\u4f9b\u5e72\u51c0\u6587\u672c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>EPubLoader \u4f4d\u4e8e &#064;langchain\/community&#xff0c;\u4f46\u5e95\u5c42\u8fd8\u9700\u8981 epub2 \u8bfb\u53d6 EPUB\u3001\u9700\u8981 html-to-text \u53bb\u9664 HTML \u6807\u7b7e&#xff0c;\u56e0\u6b64\u8fd9\u4e24\u4e2a\u5305\u4e5f\u5fc5\u987b\u5b89\u88c5\u3002<\/p>\n<h3>2.3 \u914d\u7f6e\u76ee\u5f55\u4e0e\u73af\u5883\u53d8\u91cf<\/h3>\n<p>\u9879\u76ee\u76ee\u5f55\u4fdd\u6301\u5982\u4e0b\u7ed3\u6784&#xff1a;<\/p>\n<p>tlbb\/<br \/>\n\u251c\u2500\u2500 .env<br \/>\n\u251c\u2500\u2500 package.json<br \/>\n\u251c\u2500\u2500 pnpm-lock.yaml<br \/>\n\u251c\u2500\u2500 pnpm-workspace.yaml<br \/>\n\u251c\u2500\u2500 readmd.md<br \/>\n\u251c\u2500\u2500 \u5929\u9f99\u516b\u90e8.epub<br \/>\n\u2514\u2500\u2500 src\/<br \/>\n    \u251c\u2500\u2500 main.mjs<br \/>\n    \u251c\u2500\u2500 query.mjs<br \/>\n    \u2514\u2500\u2500 rag.mjs<\/p>\n<p>.env \u4e2d\u9700\u8981\u63d0\u4f9b\u516d\u4e2a\u53d8\u91cf\u3002\u771f\u5b9e\u503c\u7531\u5404\u81ea\u4f7f\u7528\u7684\u6a21\u578b\u670d\u52a1\u548c Milvus \u670d\u52a1\u51b3\u5b9a&#xff1a;<\/p>\n<p>MODEL_NAME&#061;\u804a\u5929\u6a21\u578b\u540d\u79f0<br \/>\nOPENAI_API_KEY&#061;\u63a5\u53e3\u5bc6\u94a5<br \/>\nOPENAI_BASE_URL&#061;OpenAI\u517c\u5bb9\u63a5\u53e3\u5730\u5740<br \/>\nMILVUS_ADDRESS&#061;Milvus\u670d\u52a1\u5730\u5740<br \/>\nMILVUS_TOKEN&#061;Milvus\u8bbf\u95ee\u4ee4\u724c<br \/>\nEMBEDDING_MODEL_NAME&#061;\u5411\u91cf\u6a21\u578b\u540d\u79f0<\/p>\n<table>\n<tr>\u73af\u5883\u53d8\u91cf\u4f7f\u7528\u4f4d\u7f6e\u4f5c\u7528<\/tr>\n<tbody>\n<tr>\n<td>MODEL_NAME<\/td>\n<td>rag.mjs<\/td>\n<td>\u6307\u5b9a\u751f\u6210\u7b54\u6848\u7684\u804a\u5929\u6a21\u578b<\/td>\n<\/tr>\n<tr>\n<td>OPENAI_API_KEY<\/td>\n<td>\u4e09\u4e2a\u6587\u4ef6<\/td>\n<td>\u4e3a\u6a21\u578b\u63a5\u53e3\u63d0\u4f9b\u8eab\u4efd\u8ba4\u8bc1<\/td>\n<\/tr>\n<tr>\n<td>OPENAI_BASE_URL<\/td>\n<td>\u4e09\u4e2a\u6587\u4ef6<\/td>\n<td>\u6307\u5b9a OpenAI \u517c\u5bb9\u63a5\u53e3\u5730\u5740<\/td>\n<\/tr>\n<tr>\n<td>MILVUS_ADDRESS<\/td>\n<td>\u4e09\u4e2a\u6587\u4ef6<\/td>\n<td>\u6307\u5b9a Milvus \u670d\u52a1\u5730\u5740<\/td>\n<\/tr>\n<tr>\n<td>MILVUS_TOKEN<\/td>\n<td>\u4e09\u4e2a\u6587\u4ef6<\/td>\n<td>\u4e3a Milvus \u8fde\u63a5\u63d0\u4f9b\u8ba4\u8bc1<\/td>\n<\/tr>\n<tr>\n<td>EMBEDDING_MODEL_NAME<\/td>\n<td>\u4e09\u4e2a\u6587\u4ef6<\/td>\n<td>\u6307\u5b9a\u6587\u672c\u5411\u91cf\u6a21\u578b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>3. main.mjs&#xff1a;\u52a0\u8f7d EPUB \u5e76\u5efa\u7acb\u5411\u91cf\u77e5\u8bc6\u5e93<\/h2>\n<h3>3.1 \u6587\u4ef6\u804c\u8d23\u4e0e\u603b\u4f53\u6d41\u7a0b<\/h3>\n<p>main.mjs \u662f\u6574\u4e2a\u9879\u76ee\u7684\u5165\u5e93\u7a0b\u5e8f\u3002\u5b83\u5148\u8bfb\u53d6\u914d\u7f6e\u5e76\u521d\u59cb\u5316 Embedding \u6a21\u578b\u548c Milvus \u5ba2\u6237\u7aef&#xff0c;\u518d\u68c0\u67e5 ebook \u96c6\u5408\u662f\u5426\u5b58\u5728&#xff1b;\u7b2c\u4e00\u6b21\u8fd0\u884c\u65f6\u521b\u5efa\u5b57\u6bb5\u4e0e\u5411\u91cf\u7d22\u5f15&#xff0c;\u968f\u540e\u52a0\u8f7d EPUB\u3001\u6309\u7ae0\u8282\u5207\u7247\u3001\u4e3a\u6bcf\u4e2a\u5207\u7247\u751f\u6210\u5411\u91cf&#xff0c;\u6700\u540e\u5c06\u6570\u636e\u6279\u91cf\u63d2\u5165\u96c6\u5408\u3002<\/p>\n<p>\u5b83\u7684\u6267\u884c\u987a\u5e8f\u53ef\u4ee5\u6982\u62ec\u4e3a&#xff1a;<\/p>\n<p>\u521d\u59cb\u5316\u914d\u7f6e \u2192 \u8fde\u63a5 Milvus \u2192 \u786e\u4fdd\u96c6\u5408\u5b58\u5728 \u2192 \u52a0\u8f7d EPUB \u2192 \u6309\u7ae0\u8282\u5207\u7247 \u2192 \u751f\u6210\u5411\u91cf \u2192 \u6279\u91cf\u63d2\u5165<\/p>\n<p>Milvus \u4e2d\u4e0d\u4ec5\u4fdd\u5b58 vector&#xff0c;\u8fd8\u4fdd\u5b58 content\u3001chapter_num\u3001index \u7b49\u4fe1\u606f\u3002\u5411\u91cf\u8d1f\u8d23\u5339\u914d\u8bed\u4e49&#xff0c;\u539f\u6587\u548c\u5143\u6570\u636e\u5219\u8d1f\u8d23\u5728\u68c0\u7d22\u547d\u4e2d\u540e\u8fd8\u539f\u5185\u5bb9\u3002<\/p>\n<h3>3.2 \u5bfc\u5165\u6a21\u5757\u3001\u8bfb\u53d6\u914d\u7f6e\u5e76\u521d\u59cb\u5316 Embedding<\/h3>\n<p>\u8fd9\u4e00\u90e8\u5206\u5b8c\u6210\u4f9d\u8d56\u5bfc\u5165\u3001\u5e38\u91cf\u58f0\u660e\u3001\u4e66\u540d\u89e3\u6790\u548c\u5411\u91cf\u6a21\u578b\u521d\u59cb\u5316&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token string\">&#039;dotenv\/config&#039;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> parse <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;path&#039;<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/ path \u89e3\u6790\u8def\u5f84<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  MilvusClient<span class=\"token punctuation\">,<\/span><br \/>\n  DataType<span class=\"token punctuation\">,<\/span><br \/>\n  MetricType<span class=\"token punctuation\">,<\/span><br \/>\n  IndexType<br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;zilliz\/milvus2-sdk-node&#039;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  OpenAIEmbeddings<br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;langchain\/openai&#039;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  EPubLoader<br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;langchain\/community\/document_loaders\/fs\/epub&#039;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  RecursiveCharacterTextSplitter<br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;langchain\/textsplitters&#039;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ config<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">COLLECTION_NAME<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;ebook&#039;<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/ \u7f16\u7a0b\u4e60\u60ef<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">VECTOR_DIM<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1024<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">CHUNK_SIZE<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">500<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">EPUB_FILE<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;.\/\u5929\u9f99\u516b\u90e8.epub&#039;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">ADDRESS<\/span> <span class=\"token operator\">&#061;<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">MILVUS_ADDRESS<\/span><span class=\"token comment\">\/\/ \u4e91\u7aef\u5730\u5740<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">TOKEN<\/span> <span class=\"token operator\">&#061;<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">MILVUS_TOKEN<\/span><span class=\"token comment\">\/\/ API Key<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token literal-property property\">name<\/span><span class=\"token operator\">:<\/span><span class=\"token constant\">BOOK_NAME<\/span><span class=\"token punctuation\">}<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">parse<\/span><span class=\"token punctuation\">(<\/span><span class=\"token constant\">EPUB_FILE<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token constant\">BOOK_NAME<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">const<\/span> embeddings <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">OpenAIEmbeddings<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token literal-property property\">apiKey<\/span><span class=\"token operator\">:<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">OPENAI_API_KEY<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">model<\/span><span class=\"token operator\">:<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">EMBEDDING_MODEL_NAME<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">configuration<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token literal-property property\">baseURL<\/span><span class=\"token operator\">:<\/span>process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">OPENAI_BASE_URL<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">dimension<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">VECTOR_DIM<\/span><span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>import &#039;dotenv\/config&#039; \u662f\u4e00\u4e2a\u6709\u526f\u4f5c\u7528\u7684\u5bfc\u5165\u3002\u6a21\u5757\u8f7d\u5165\u540e&#xff0c;\u6839\u76ee\u5f55 .env \u4e2d\u7684\u5185\u5bb9\u4f1a\u8fdb\u5165 process.env&#xff0c;\u540e\u7eed\u4ee3\u7801\u4fbf\u80fd\u8bfb\u53d6 Milvus \u5730\u5740\u3001\u4ee4\u724c\u548c\u6a21\u578b\u914d\u7f6e\u3002<\/p>\n<p>parse(EPUB_FILE) \u6765\u81ea Node.js \u7684 path \u6a21\u5757\u3002EPUB_FILE \u662f .\/\u5929\u9f99\u516b\u90e8.epub&#xff0c;\u89e3\u6784\u5f97\u5230\u7684 BOOK_NAME \u662f\u4e0d\u5e26\u6269\u5c55\u540d\u7684\u6587\u4ef6\u540d&#xff0c;\u5b83\u4f1a\u4f5c\u4e3a\u6bcf\u6761\u5207\u7247\u7684\u4e66\u540d\u5143\u6570\u636e\u3002<\/p>\n<p>\u8fd9\u4e00\u5757\u4e2d\u7684\u5e38\u91cf\u5404\u81ea\u63a7\u5236\u4e00\u4e2a\u6838\u5fc3\u73af\u8282&#xff1a;<\/p>\n<table>\n<tr>\u5e38\u91cf\u5f53\u524d\u503c\u4f5c\u7528<\/tr>\n<tbody>\n<tr>\n<td>COLLECTION_NAME<\/td>\n<td>ebook<\/td>\n<td>Milvus \u96c6\u5408\u540d\u79f0<\/td>\n<\/tr>\n<tr>\n<td>VECTOR_DIM<\/td>\n<td>1024<\/td>\n<td>\u9879\u76ee\u4f7f\u7528\u7684\u5411\u91cf\u7ef4\u5ea6<\/td>\n<\/tr>\n<tr>\n<td>CHUNK_SIZE<\/td>\n<td>500<\/td>\n<td>\u6bcf\u4e2a\u5207\u7247\u7684\u76ee\u6807\u5b57\u7b26\u5927\u5c0f<\/td>\n<\/tr>\n<tr>\n<td>EPUB_FILE<\/td>\n<td>.\/\u5929\u9f99\u516b\u90e8.epub<\/td>\n<td>\u7535\u5b50\u4e66\u76f8\u5bf9\u8def\u5f84<\/td>\n<\/tr>\n<tr>\n<td>ADDRESS<\/td>\n<td>\u73af\u5883\u53d8\u91cf<\/td>\n<td>Milvus \u670d\u52a1\u5730\u5740<\/td>\n<\/tr>\n<tr>\n<td>TOKEN<\/td>\n<td>\u73af\u5883\u53d8\u91cf<\/td>\n<td>Milvus \u8bbf\u95ee\u51ed\u8bc1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>OpenAIEmbeddings \u63a5\u6536\u63a5\u53e3\u5bc6\u94a5\u3001\u5411\u91cf\u6a21\u578b\u540d\u79f0\u3001\u517c\u5bb9\u670d\u52a1\u5730\u5740\u548c\u7ef4\u5ea6\u914d\u7f6e\u3002\u8fd9\u4e2a\u5b9e\u4f8b\u4f1a\u88ab\u540e\u7eed getEmbedding() \u7edf\u4e00\u8c03\u7528\u3002<\/p>\n<h3>3.3 \u5c01\u88c5\u5411\u91cf\u51fd\u6570\u5e76\u521b\u5efa Milvus \u5ba2\u6237\u7aef<\/h3>\n<p>\u7b2c\u4e8c\u5757\u4ee3\u7801\u628a\u5411\u91cf\u751f\u6210\u5c01\u88c5\u4e3a\u5355\u4e00\u804c\u8d23\u51fd\u6570&#xff0c;\u540c\u65f6\u521b\u5efa\u6570\u636e\u5e93\u5ba2\u6237\u7aef&#xff1a;<\/p>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">getEmbedding<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">text<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">const<\/span> result <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> embeddings<span class=\"token punctuation\">.<\/span><span class=\"token function\">embedQuery<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">return<\/span> result<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5411\u91cf\u6570\u636e\u5e93\u521d\u59cb\u5316<\/span><br \/>\n<span class=\"token keyword\">const<\/span> client <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">MilvusClient<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token literal-property property\">address<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">ADDRESS<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">token<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">TOKEN<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>embeddings.embedQuery(text) \u63a5\u6536\u4e00\u6bb5\u5b57\u7b26\u4e32\u5e76\u8fd4\u56de\u4e00\u4e2a\u6d6e\u70b9\u6570\u6570\u7ec4\u3002\u867d\u7136\u51fd\u6570\u540d\u4e2d\u5e26\u6709 Query&#xff0c;\u5728\u5f53\u524d\u9879\u76ee\u4e2d\u5b83\u88ab\u7edf\u4e00\u4f5c\u4e3a\u5355\u6587\u672c\u5411\u91cf\u751f\u6210\u5165\u53e3&#xff1a;main.mjs \u7528\u5b83\u5904\u7406\u6587\u672c\u5207\u7247&#xff0c;query.mjs \u548c rag.mjs \u7528\u5b83\u5904\u7406\u7528\u6237\u95ee\u9898\u3002<\/p>\n<p>MilvusClient \u4fdd\u5b58\u670d\u52a1\u5668\u5730\u5740\u548c\u8ba4\u8bc1\u4ee4\u724c\u3002\u5ba2\u6237\u7aef\u5b9e\u4f8b\u4f1a\u5728\u96c6\u5408\u521b\u5efa\u3001\u6570\u636e\u63d2\u5165\u548c\u5411\u91cf\u67e5\u8be2\u73af\u8282\u590d\u7528&#xff0c;\u907f\u514d\u6bcf\u6b21\u64cd\u4f5c\u90fd\u91cd\u65b0\u6784\u9020\u8fde\u63a5\u5bf9\u8c61\u3002<\/p>\n<h3>3.4 \u521b\u5efa Collection\u3001\u5b57\u6bb5\u4e0e\u7d22\u5f15<\/h3>\n<p>ensureCollection(bookId) \u8d1f\u8d23\u201c\u6ca1\u6709\u96c6\u5408\u5c31\u521b\u5efa&#xff0c;\u6709\u96c6\u5408\u5c31\u76f4\u63a5\u52a0\u8f7d\u201d\u3002\u8fd9\u8ba9\u7b2c\u4e00\u6b21\u6267\u884c\u548c\u540e\u7eed\u6267\u884c\u53ef\u4ee5\u5171\u7528\u540c\u4e00\u4e2a\u5165\u53e3&#xff1a;<\/p>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">ensureCollection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">bookId<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token comment\">\/\/ \u6ca1\u6709\u5c31\u5efa\u7acb<\/span><br \/>\n  <span class=\"token comment\">\/\/ \u6709\u5c31\u5ffd\u7565<\/span><br \/>\n  <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u5224\u65ad\u662f\u5426\u5df2\u7ecf\u521b\u5efa\u4e86\u96c6\u5408<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> hasCollection <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span><span class=\"token function\">hasCollection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token literal-property property\">collection_name<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">COLLECTION_NAME<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>hasCollection<span class=\"token punctuation\">.<\/span>value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>hasCollection<span class=\"token punctuation\">.<\/span>value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u521b\u5efa\u96c6\u5408&#8230;&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span><span class=\"token function\">createCollection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token literal-property property\">collection_name<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">COLLECTION_NAME<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token literal-property property\">fields<\/span><span class=\"token operator\">:<\/span><span class=\"token punctuation\">[<\/span><br \/>\n          <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token literal-property property\">name<\/span><span class=\"token operator\">:<\/span><span class=\"token string\">&#039;id&#039;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token literal-property property\">data_type<\/span><span class=\"token operator\">:<\/span>DataType<span class=\"token punctuation\">.<\/span>VarChar<span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token literal-property property\">max_length<\/span><span class=\"token operator\">:<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">,<\/span><span class=\"token literal-property property\">is_primary_key<\/span><span class=\"token operator\">:<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token literal-property property\">name<\/span><span class=\"token operator\">:<\/span><span class=\"token string\">&#039;book_id&#039;<\/span><span class=\"token punctuation\">,<\/span><span class=\"token literal-property property\">data_type<\/span><span class=\"token operator\">:<\/span>DataType<span class=\"token punctuation\">.<\/span>VarChar<span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token literal-property property\">max_length<\/span><span class=\"token operator\">:<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token literal-property property\">name<\/span><span class=\"token operator\">:<\/span><span class=\"token string\">&#039;book_name&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token literal-property property\">data_type<\/span><span class=\"token operator\">:<\/span>DataType<span class=\"token punctuation\">.<\/span>VarChar<span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token literal-property property\">max_length<\/span><span class=\"token operator\">:<\/span><span class=\"token number\">200<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u7b2c\u51e0\u7ae0\u7684<\/span><br \/>\n            <span class=\"token literal-property property\">name<\/span><span class=\"token operator\">:<\/span><span class=\"token string\">&#039;chapter_num&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token literal-property property\">data_type<\/span><span class=\"token operator\">:<\/span>DataType<span class=\"token punctuation\">.<\/span>Int32<br \/>\n          <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token punctuation\">{<\/span>  <span class=\"token comment\">\/\/ \u7b2c\u51e0\u4e2a\u6570\u636e\u5207\u7247<\/span><br \/>\n            <span class=\"token literal-property property\">name<\/span><span class=\"token operator\">:<\/span><span class=\"token string\">&#039;index&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token literal-property property\">data_type<\/span><span class=\"token operator\">:<\/span>DataType<span class=\"token punctuation\">.<\/span>Int32<br \/>\n          <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token literal-property property\">name<\/span><span class=\"token operator\">:<\/span><span class=\"token string\">&#039;content&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token literal-property property\">data_type<\/span><span class=\"token operator\">:<\/span>DataType<span class=\"token punctuation\">.<\/span>VarChar<span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token literal-property property\">max_length<\/span><span class=\"token operator\">:<\/span><span class=\"token number\">10000<\/span><br \/>\n          <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token literal-property property\">name<\/span><span class=\"token operator\">:<\/span><span class=\"token string\">&#039;vector&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token literal-property property\">data_type<\/span><span class=\"token operator\">:<\/span>DataType<span class=\"token punctuation\">.<\/span>FloatVector<span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token literal-property property\">dim<\/span><span class=\"token operator\">:<\/span><span class=\"token constant\">VECTOR_DIM<\/span><br \/>\n          <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">]<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u96c6\u5408\u521b\u5efa\u5b8c\u6210&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u521b\u5efa\u7d22\u5f15&#8230;&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span><span class=\"token function\">createIndex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token literal-property property\">collection_name<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">COLLECTION_NAME<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token literal-property property\">field_name<\/span><span class=\"token operator\">:<\/span><span class=\"token string\">&#039;vector&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token comment\">\/\/ nlist \u662fK-Means \u805a\u7c7b\u7684\u7c07\u6570<\/span><br \/>\n        <span class=\"token literal-property property\">index_type<\/span><span class=\"token operator\">:<\/span>IndexType<span class=\"token punctuation\">.<\/span><span class=\"token constant\">IVF_FLAT<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token literal-property property\">metric_type<\/span><span class=\"token operator\">:<\/span>MetricType<span class=\"token punctuation\">.<\/span><span class=\"token constant\">COSINE<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token literal-property property\">params<\/span><span class=\"token operator\">:<\/span><span class=\"token punctuation\">{<\/span><span class=\"token literal-property property\">nlist<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">1024<\/span><span class=\"token punctuation\">}<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><br \/>\n      <span class=\"token comment\">\/\/ COSINE \u9ad8\u7ef4\u76f8\u4f3c\u5ea6,\u4e0d\u6162,\u6570\u636e\u91cf\u5927<\/span><br \/>\n      console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u7d22\u5f15\u521b\u5efa\u5b8c\u6210&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u7ec6\u8282\u6355\u6349\u9519\u8bef<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u6bcf\u6b21\u8981\u505a\u7684<\/span><br \/>\n    <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span><span class=\"token function\">loadCollection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token literal-property property\">collection_name<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">COLLECTION_NAME<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u96c6\u5408\u52a0\u8f7d\u5b8c\u6210&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">catch<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      console<span class=\"token punctuation\">.<\/span><span class=\"token function\">error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u96c6\u5408\u5df2\u7ecf\u5904\u4e8e\u52a0\u8f7d\u72b6\u6001&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">catch<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u521b\u5efa\u96c6\u5408\u65f6\u51fa\u9519&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>client.hasCollection() \u8fd4\u56de\u96c6\u5408\u662f\u5426\u5b58\u5728&#xff0c;\u7ed3\u679c\u4fdd\u5b58\u5728 hasCollection.value\u3002\u53ea\u6709\u503c\u4e3a\u5047\u65f6&#xff0c;\u7a0b\u5e8f\u624d\u6267\u884c createCollection() \u548c createIndex()\u3002<\/p>\n<p>Collection Schema \u4e2d\u6bcf\u4e2a\u5b57\u6bb5\u90fd\u6709\u660e\u786e\u7528\u9014&#xff1a;<\/p>\n<table>\n<tr>\u5b57\u6bb5Milvus \u7c7b\u578b\u4f5c\u7528<\/tr>\n<tbody>\n<tr>\n<td>id<\/td>\n<td>VarChar<\/td>\n<td>\u4e3b\u952e&#xff0c;\u683c\u5f0f\u4e3a\u201c\u4e66\u7c4d ID_\u7ae0\u8282\u5e8f\u53f7_\u5207\u7247\u5e8f\u53f7\u201d<\/td>\n<\/tr>\n<tr>\n<td>book_id<\/td>\n<td>VarChar<\/td>\n<td>\u4fdd\u5b58\u4e66\u7c4d\u4e1a\u52a1\u6807\u8bc6<\/td>\n<\/tr>\n<tr>\n<td>book_name<\/td>\n<td>VarChar<\/td>\n<td>\u4fdd\u5b58\u4ece EPUB \u6587\u4ef6\u540d\u89e3\u6790\u51fa\u7684\u4e66\u540d<\/td>\n<\/tr>\n<tr>\n<td>chapter_num<\/td>\n<td>Int32<\/td>\n<td>\u4fdd\u5b58\u5f53\u524d\u6587\u6863\u5728\u52a0\u8f7d\u7ed3\u679c\u4e2d\u7684\u987a\u5e8f<\/td>\n<\/tr>\n<tr>\n<td>index<\/td>\n<td>Int32<\/td>\n<td>\u4fdd\u5b58\u5207\u7247\u5728\u5f53\u524d\u6587\u6863\u4e2d\u7684\u5e8f\u53f7<\/td>\n<\/tr>\n<tr>\n<td>content<\/td>\n<td>VarChar<\/td>\n<td>\u4fdd\u5b58\u7528\u4e8e\u5c55\u793a\u4e0e RAG \u7684\u539f\u6587<\/td>\n<\/tr>\n<tr>\n<td>vector<\/td>\n<td>FloatVector<\/td>\n<td>\u4fdd\u5b58\u7528\u4e8e\u76f8\u4f3c\u5ea6\u641c\u7d22\u7684\u5411\u91cf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>id \u88ab\u8bbe\u7f6e\u4e3a\u4e3b\u952e&#xff0c;content \u7684\u6700\u5927\u957f\u5ea6\u662f 10000&#xff0c;vector \u7684\u7ef4\u5ea6\u6765\u81ea VECTOR_DIM\u3002Schema \u7684\u4f5c\u7528\u662f\u63d0\u524d\u7ea6\u675f\u6bcf\u6761\u8bb0\u5f55\u7684\u5f62\u72b6&#xff0c;\u4fdd\u8bc1\u540e\u7eed\u63d2\u5165\u7684\u6570\u636e\u5b57\u6bb5\u4e00\u81f4\u3002<\/p>\n<p>\u7d22\u5f15\u90e8\u5206\u4f7f\u7528 IndexType.IVF_FLAT\u3002\u5b83\u4f1a\u901a\u8fc7 K-Means \u601d\u60f3\u5c06\u5411\u91cf\u7a7a\u95f4\u5212\u5206\u4e3a\u591a\u4e2a\u805a\u7c7b&#xff0c;params: { nlist: 1024 } \u4e2d\u7684 nlist \u8868\u793a\u805a\u7c7b\u7c07\u6570\u91cf\u3002\u8ddd\u79bb\u5ea6\u91cf\u91c7\u7528 MetricType.COSINE&#xff0c;\u56e0\u6b64\u67e5\u8be2\u65f6\u4e5f\u7ee7\u7eed\u4f7f\u7528 COSINE\u3002<\/p>\n<p>\u65e0\u8bba\u96c6\u5408\u662f\u521a\u521b\u5efa\u8fd8\u662f\u5df2\u7ecf\u5b58\u5728&#xff0c;\u51fd\u6570\u6700\u540e\u90fd\u4f1a\u8c03\u7528 loadCollection()\u3002\u52a0\u8f7d Collection \u662f\u540e\u7eed\u5728 Milvus \u4e2d\u6267\u884c\u5411\u91cf\u68c0\u7d22\u7684\u91cd\u8981\u51c6\u5907\u6b65\u9aa4\u3002\u5185\u5c42 try&#8230;catch \u8d1f\u8d23\u5904\u7406\u96c6\u5408\u5df2\u7ecf\u5904\u4e8e\u52a0\u8f7d\u72b6\u6001\u7684\u60c5\u51b5&#xff0c;\u5916\u5c42 try&#8230;catch \u5219\u7edf\u4e00\u6355\u83b7\u96c6\u5408\u521b\u5efa\u9636\u6bb5\u7684\u5f02\u5e38\u3002<\/p>\n<h3>3.5 \u52a0\u8f7d EPUB \u5e76\u9012\u5f52\u5207\u7247<\/h3>\n<p>\u8fd9\u4e00\u5757\u8d1f\u8d23\u628a\u7535\u5b50\u4e66\u53d8\u6210\u53ef\u4ee5\u9010\u6279\u5165\u5e93\u7684\u6587\u672c\u7247\u6bb5&#xff1a;<\/p>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">loadAndProcessEPubStreaming<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">bookId<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">\\\\n \u5f00\u59cb\u52a0\u8f7dEPUB\u6587\u4ef6: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span><span class=\"token constant\">EPUB_FILE<\/span><span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> loader <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">EPubLoader<\/span><span class=\"token punctuation\">(<\/span><span class=\"token constant\">EPUB_FILE<\/span><span class=\"token punctuation\">,<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token comment\">\/\/ \u52a0\u8f7d\u540e\u5c31\u4f1a\u6309\u7ae0\u8282\u751f\u6210\u591a\u4e2adocument<\/span><br \/>\n      <span class=\"token comment\">\/\/ \u5185\u5b58\u9700\u6c42\u7684\u5fc5\u7136<\/span><br \/>\n      <span class=\"token literal-property property\">splitChapters<\/span><span class=\"token operator\">:<\/span> <span class=\"token boolean\">true<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> documents <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> loader<span class=\"token punctuation\">.<\/span><span class=\"token function\">load<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">\\\\n \u52a0\u8f7d\u5b8c\u6210, \u5171 <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>documents<span class=\"token punctuation\">.<\/span>length<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\"> \u4e2a\u7ae0\u8282<\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">const<\/span> textSplitter <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">RecursiveCharacterTextSplitter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token comment\">\/\/ \u6ca1\u6709\u4f20separtor \u5c31\u7528\u9ed8\u8ba4\u7684 \\\\n<\/span><br \/>\n      <span class=\"token literal-property property\">chunkSize<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">CHUNK_SIZE<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      <span class=\"token literal-property property\">chunkOverlap<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">50<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token comment\">\/\/ \u91cd\u53e050\u4e2a\u5b57\u7b26&#xff0c;\u4fdd\u6301\u4e0a\u4e0b\u6587\u8fde\u8d2f\u6027<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">let<\/span> totalInserted <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8ba1\u6570<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> documentLen <span class=\"token operator\">&#061;<\/span> documents<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/ \u7f13\u5b58<\/span><br \/>\n    <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">let<\/span> chapterIndex <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> chapterIndex<span class=\"token operator\">&lt;<\/span>documentLen<span class=\"token punctuation\">;<\/span>chapterIndex<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token comment\">\/\/ document \u8fd9\u4e00\u7ae0\u7684<\/span><br \/>\n      <span class=\"token keyword\">const<\/span> chapter <span class=\"token operator\">&#061;<\/span> documents<span class=\"token punctuation\">[<\/span>chapterIndex<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">const<\/span> chapterContent <span class=\"token operator\">&#061;<\/span> chapter<span class=\"token punctuation\">.<\/span>pageContent<span class=\"token punctuation\">;<\/span><br \/>\n      console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">\u5904\u7406\u7b2c <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>chapterIndex<span class=\"token operator\">&#043;<\/span><span class=\"token number\">1<\/span><span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\"> \/ <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>documentLen<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\"> \u7ae0&#8230;<\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">const<\/span> chunks <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> textSplitter<span class=\"token punctuation\">.<\/span><span class=\"token function\">splitText<\/span><span class=\"token punctuation\">(<\/span>chapterContent<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">\u62c6\u5206\u4e3a <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>chunks<span class=\"token punctuation\">.<\/span>length<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\"> \u4e2a\u7247\u6bb5<\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>chunks<span class=\"token punctuation\">.<\/span>length <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">\u8df3\u8fc7\u7a7a\u7ae0\u8282\\\\n<\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">continue<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><br \/>\n      console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">\u751f\u6210\u5411\u91cf\u5e76\u63d2\u5165\u4e2d&#8230;<\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">const<\/span> insertedCount <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token function\">insertChunksBatch<\/span><span class=\"token punctuation\">(<\/span>chunks<span class=\"token punctuation\">,<\/span>bookId<span class=\"token punctuation\">,<\/span>chapterIndex<span class=\"token operator\">&#043;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      totalInserted <span class=\"token operator\">&#043;&#061;<\/span> insertedCount<span class=\"token punctuation\">;<\/span><br \/>\n      console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">\u5df2\u63d2\u5165 <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>totalInserted<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\"> \u6761\u8bb0\u5f55<\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">\\\\n\u603b\u5171\u63d2\u5165 <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>totalInserted<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\"> \u6761\u8bb0\u5f55\\\\n<\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> totalInserted<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">catch<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u52a0\u8f7dEPUB\u6587\u4ef6\u65f6\u51fa\u9519:&#039;<\/span><span class=\"token punctuation\">,<\/span> err<span class=\"token punctuation\">.<\/span>message<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>new EPubLoader(EPUB_FILE, { splitChapters: true }) \u4f1a\u8bfb\u53d6 EPUB \u7684\u5185\u90e8 flow&#xff0c;\u5e76\u4e3a\u52a0\u8f7d\u5230\u7684\u7ae0\u8282\u8282\u70b9\u751f\u6210 Document\u3002\u6bcf\u4e2a Document \u7684\u6b63\u6587\u4f4d\u4e8e pageContent&#xff0c;\u56e0\u6b64\u5faa\u73af\u4e2d\u901a\u8fc7 chapter.pageContent \u53d6\u5f97\u5f85\u5207\u5206\u6587\u672c\u3002<\/p>\n<p>RecursiveCharacterTextSplitter \u63a5\u6536\u4e24\u4e2a\u5173\u952e\u53c2\u6570&#xff1a;<\/p>\n<table>\n<tr>\u53c2\u6570\u5f53\u524d\u503c\u4f5c\u7528<\/tr>\n<tbody>\n<tr>\n<td>chunkSize<\/td>\n<td>500<\/td>\n<td>\u63a7\u5236\u6bcf\u4e2a\u7247\u6bb5\u7684\u76ee\u6807\u957f\u5ea6<\/td>\n<\/tr>\n<tr>\n<td>chunkOverlap<\/td>\n<td>50<\/td>\n<td>\u8ba9\u76f8\u90bb\u7247\u6bb5\u4fdd\u7559\u4e00\u90e8\u5206\u91cd\u590d\u4e0a\u4e0b\u6587<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u9012\u5f52\u5b57\u7b26\u5207\u5206\u5668\u4f1a\u5c1d\u8bd5\u6cbf\u6bb5\u843d\u3001\u6362\u884c\u548c\u66f4\u7ec6\u7684\u5b57\u7b26\u8fb9\u754c\u5207\u5206\u3002chunkOverlap \u8ba9\u524d\u4e00\u7247\u6bb5\u672b\u5c3e\u4e0e\u540e\u4e00\u7247\u6bb5\u5f00\u5934\u5171\u4eab\u90e8\u5206\u5185\u5bb9&#xff0c;\u51cf\u5c11\u4e00\u53e5\u8bdd\u521a\u597d\u8de8\u8d8a\u8fb9\u754c\u540e\u8bed\u4e49\u88ab\u62c6\u6563\u7684\u60c5\u51b5\u3002<\/p>\n<p>\u5916\u5c42 for \u5faa\u73af\u6309 documents \u987a\u5e8f\u5904\u7406&#xff0c;\u6bcf\u4e2a\u7ae0\u8282\u8282\u70b9\u5b8c\u6210\u5207\u7247\u540e\u7acb\u5373\u8c03\u7528 insertChunksBatch()\u3002totalInserted \u4f1a\u7d2f\u8ba1\u6bcf\u4e00\u6b21\u6279\u91cf\u5199\u5165\u8fd4\u56de\u7684\u6570\u91cf&#xff0c;\u5e76\u6301\u7eed\u6253\u5370\u8fdb\u5ea6\u3002\u82e5\u67d0\u4e2a\u7ae0\u8282\u5207\u5206\u7ed3\u679c\u4e3a\u7a7a&#xff0c;\u5219\u901a\u8fc7 continue \u8fdb\u5165\u4e0b\u4e00\u8f6e\u3002<\/p>\n<h3>3.6 \u5e76\u53d1\u751f\u6210\u7247\u6bb5\u5411\u91cf\u5e76\u6279\u91cf\u63d2\u5165<\/h3>\n<p>insertChunksBatch() \u63a5\u6536\u5f53\u524d\u7ae0\u8282\u7684\u5168\u90e8 chunks&#xff0c;\u4e3a\u5b83\u4eec\u751f\u6210\u5411\u91cf\u5e76\u4e00\u6b21\u6027\u63d0\u4ea4\u7ed9 Milvus&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ \u5c06\u4e00\u6279chunk \u63d2\u5165\u5411\u91cf\u6570\u636e\u5e93<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">insertChunksBatch<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">chunks<span class=\"token punctuation\">,<\/span>bookId<span class=\"token punctuation\">,<\/span>chapterNum<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u4e3a\u7a7a \u4e0d\u9700\u8981\u505a\u7684<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>chunks<span class=\"token punctuation\">.<\/span>length <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> insertData <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> Promise<span class=\"token punctuation\">.<\/span><span class=\"token function\">all<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      chunks<span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\">chunk<span class=\"token punctuation\">,<\/span>chunkIndex<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">const<\/span> vector <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token function\">getEmbedding<\/span><span class=\"token punctuation\">(<\/span>chunk<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n          <span class=\"token literal-property property\">id<\/span><span class=\"token operator\">:<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>bookId<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">_<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>chapterNum<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">_<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>chunkIndex<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token literal-property property\">book_id<\/span><span class=\"token operator\">:<\/span> bookId<span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token literal-property property\">book_name<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">BOOK_NAME<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token literal-property property\">chapter_num<\/span><span class=\"token operator\">:<\/span> chapterNum<span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token literal-property property\">index<\/span><span class=\"token operator\">:<\/span> chunkIndex<span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token literal-property property\">content<\/span><span class=\"token operator\">:<\/span> chunk<span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token literal-property property\">vector<\/span><span class=\"token operator\">:<\/span> vector<br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> insertResult <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span><span class=\"token function\">insert<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token literal-property property\">collection_name<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">COLLECTION_NAME<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      <span class=\"token literal-property property\">data<\/span><span class=\"token operator\">:<\/span> insertData<br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u51fd\u6570\u8fd4\u56de\u7684\u7ed3\u679c\u8981\u6709\u53ef\u9884\u6d4b\u6027 \u4e00\u81f4\u3002<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token function\">Number<\/span><span class=\"token punctuation\">(<\/span>insertResult<span class=\"token punctuation\">.<\/span>insert_cnt<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">catch<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">\u63d2\u5165\u7ae0\u8282<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>chapterNum<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">\u6570\u636e\u65f6\u51fa\u9519: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>err<span class=\"token punctuation\">.<\/span>message<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">throw<\/span> err<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>chunks.map() \u4f1a\u4e3a\u5f53\u524d\u7ae0\u8282\u7684\u6bcf\u4e2a\u7247\u6bb5\u521b\u5efa\u4e00\u4e2a\u5f02\u6b65\u4efb\u52a1&#xff0c;\u4efb\u52a1\u5185\u90e8\u8c03\u7528 getEmbedding(chunk)\u3002\u7531\u4e8e map() \u8fd4\u56de\u7684\u662f Promise \u6570\u7ec4&#xff0c;\u6240\u4ee5\u5916\u5c42\u4f7f\u7528 Promise.all() \u7b49\u5f85\u5168\u90e8\u5411\u91cf\u751f\u6210\u5b8c\u6bd5\u3002\u6700\u7ec8 insertData \u662f\u4e00\u7ec4\u7ed3\u6784\u5b8c\u6574\u7684 Milvus \u884c\u8bb0\u5f55\u3002<\/p>\n<p>\u6bcf\u6761\u8bb0\u5f55\u7684\u4e3b\u952e\u7531\u4e09\u4e2a\u503c\u62fc\u63a5&#xff1a;<\/p>\n<p>bookId_chapterNum_chunkIndex<\/p>\n<p>\u4f8b\u5982\u4e66\u7c4d ID \u4e3a 1\u3001\u6587\u6863\u5e8f\u53f7\u4e3a 5\u3001\u5207\u7247\u5e8f\u53f7\u4e3a 2 \u65f6&#xff0c;\u4e3b\u952e\u5c31\u662f 1_5_2\u3002\u540c\u4e00\u6761\u8bb0\u5f55\u8fd8\u4fdd\u7559\u4e66\u540d\u3001\u7ae0\u8282\u4f4d\u7f6e\u3001\u5207\u7247\u4f4d\u7f6e\u3001\u539f\u6587\u548c\u5411\u91cf&#xff0c;\u68c0\u7d22\u547d\u4e2d\u540e\u4fbf\u80fd\u76f4\u63a5\u62ff\u5230\u6240\u9700\u4e0a\u4e0b\u6587\u3002<\/p>\n<p>client.insert() \u7684 collection_name \u6307\u5411 ebook&#xff0c;data \u662f\u5f85\u5199\u5165\u7684\u8bb0\u5f55\u6570\u7ec4\u3002SDK \u8fd4\u56de\u7684 insert_cnt \u4f1a\u901a\u8fc7 Number() \u8f6c\u6362\u6210\u6570\u5b57&#xff1b;\u82e5\u8f6c\u6362\u7ed3\u679c\u4e0d\u53ef\u7528&#xff0c;\u5219\u8fd4\u56de 0&#xff0c;\u4f7f\u51fd\u6570\u8fd4\u56de\u503c\u4fdd\u6301\u7edf\u4e00\u7684\u6570\u503c\u7c7b\u578b\u3002<\/p>\n<h3>3.7 \u5165\u53e3\u51fd\u6570\u4e32\u8054\u5168\u90e8\u5165\u5e93\u6b65\u9aa4<\/h3>\n<p>main \u51fd\u6570\u662f main.mjs \u7684\u603b\u5165\u53e3&#xff1a;<\/p>\n<p><span class=\"token keyword\">const<\/span> <span class=\"token function-variable function\">main<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;&#061;&#039;<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">repeat<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">50<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u7535\u5b50\u4e66\u5904\u7406\u7a0b\u5e8f&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;&#061;&#039;<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">repeat<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">50<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\\\\n\u8fde\u63a5Milvus\u6570\u636e\u5e93&#8230;&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span>connectPromise<span class=\"token punctuation\">;<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u5df2\u8fde\u63a5&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> bookId <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u786e\u4fdd\u96c6\u5408\u5efa\u7acb\u4e86<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> <span class=\"token function\">ensureCollection<\/span><span class=\"token punctuation\">(<\/span>bookId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u52a0\u8f7d\u548c\u5904\u7406EPUB\u6587\u4ef6<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u4e00\u8fb9\u5207\u5272\u4e00\u8fb9embedding,\u4e00\u8fb9\u5b58\u6570\u636e\u5e93<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> <span class=\"token function\">loadAndProcessEPubStreaming<\/span><span class=\"token punctuation\">(<\/span>bookId<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">catch<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u7a0b\u5e8f\u6267\u884c\u51fa\u9519:&#039;<\/span><span class=\"token punctuation\">,<\/span> err<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">catch<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">err<\/span> <span class=\"token operator\">&#061;&gt;<\/span> console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>await client.connectPromise \u7b49\u5f85 Milvus \u8fde\u63a5\u5b8c\u6210\u3002bookId \u8bbe\u7f6e\u4e3a 1&#xff0c;\u968f\u540e\u4f9d\u6b21\u4f20\u7ed9 ensureCollection(bookId) \u548c loadAndProcessEPubStreaming(bookId)&#xff0c;\u5e76\u6700\u7ec8\u8fdb\u5165\u6bcf\u6761\u8bb0\u5f55\u7684\u4e3b\u952e\u548c book_id \u5b57\u6bb5\u3002<\/p>\n<p>\u6574\u4e2a\u5165\u53e3\u7684\u8c03\u7528\u5173\u7cfb\u5982\u4e0b&#xff1a;<\/p>\n<p>main() \u2192 ensureCollection() \u2192 loadAndProcessEPubStreaming() \u2192 insertChunksBatch() \u2192 getEmbedding()<\/p>\n<p>main().catch(&#8230;) \u4f4d\u4e8e\u6700\u5916\u5c42&#xff0c;\u7528\u4e8e\u63a5\u6536\u5165\u53e3 Promise \u7684\u5f02\u5e38&#xff1b;\u5404\u4e1a\u52a1\u51fd\u6570\u5185\u90e8\u4e5f\u901a\u8fc7 try&#8230;catch \u8f93\u51fa\u5f53\u524d\u9636\u6bb5\u7684\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n<h2>4. query.mjs&#xff1a;\u9a8c\u8bc1 Milvus \u5411\u91cf\u68c0\u7d22<\/h2>\n<h3>4.1 \u6587\u4ef6\u804c\u8d23\u4e0e\u603b\u4f53\u6d41\u7a0b<\/h3>\n<p>\u77e5\u8bc6\u5e93\u5165\u5e93\u5b8c\u6210\u540e&#xff0c;\u5148\u4f7f\u7528 query.mjs \u9a8c\u8bc1\u7eaf\u68c0\u7d22\u6548\u679c\u3002\u8fd9\u4e2a\u6587\u4ef6\u4e0d\u4f1a\u8c03\u7528\u804a\u5929\u6a21\u578b&#xff0c;\u5b83\u53ea\u628a\u95ee\u9898\u8f6c\u6362\u4e3a\u5411\u91cf&#xff0c;\u7136\u540e\u4ece ebook \u96c6\u5408\u4e2d\u641c\u7d22\u6700\u76f8\u8fd1\u7684\u4e09\u6761\u8bb0\u5f55\u3002<\/p>\n<p>\u6d41\u7a0b\u53ef\u4ee5\u6982\u62ec\u4e3a&#xff1a;<\/p>\n<p>\u8fde\u63a5 Milvus \u2192 \u52a0\u8f7d Collection \u2192 \u95ee\u9898\u5411\u91cf\u5316 \u2192 Top 3 \u641c\u7d22 \u2192 \u6253\u5370 Score \u4e0e\u539f\u6587<\/p>\n<p>\u628a\u68c0\u7d22\u72ec\u7acb\u51fa\u6765\u6709\u4e00\u4e2a\u91cd\u8981\u4ef7\u503c&#xff1a;\u5982\u679c\u6700\u7ec8 RAG \u56de\u7b54\u4e0d\u7406\u60f3&#xff0c;\u53ef\u4ee5\u5148\u89c2\u5bdf Milvus \u662f\u5426\u53ec\u56de\u4e86\u6b63\u786e\u5185\u5bb9&#xff0c;\u4ece\u800c\u533a\u5206\u95ee\u9898\u51fa\u5728\u68c0\u7d22\u9636\u6bb5\u8fd8\u662f\u751f\u6210\u9636\u6bb5\u3002<\/p>\n<h3>4.2 \u5bfc\u5165\u4f9d\u8d56\u5e76\u521d\u59cb\u5316\u67e5\u8be2\u7ec4\u4ef6<\/h3>\n<p>query.mjs \u7684\u7b2c\u4e00\u90e8\u5206\u521b\u5efa Embedding \u548c Milvus \u5ba2\u6237\u7aef&#xff0c;\u5e76\u5c01\u88c5 getEmbedding()&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token string\">&#039;dotenv\/config&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  MilvusClient<span class=\"token punctuation\">,<\/span>    <span class=\"token comment\">\/\/ C\/S B\/S<\/span><br \/>\n  MetricType<span class=\"token punctuation\">,<\/span> <span class=\"token comment\">\/\/ \u76f8\u4f3c\u5ea6\u6c42\u65b9\u6cd5 <\/span><br \/>\n  IndexType<span class=\"token punctuation\">,<\/span><br \/>\n  DataType  <span class=\"token comment\">\/\/ \u5b57\u6bb5\u6570\u636e\u7c7b\u578b\u7ea6\u675f<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;zilliz\/milvus2-sdk-node&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  OpenAIEmbeddings<br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;langchain\/openai&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">const<\/span> <span class=\"token constant\">ADDRESS<\/span> <span class=\"token operator\">&#061;<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">MILVUS_ADDRESS<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ api key<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">TOKEN<\/span> <span class=\"token operator\">&#061;<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">MILVUS_TOKEN<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">COLLECTION_NAME<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;ebook&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">VECTOR_DIM<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1024<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">const<\/span> embeddings <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">OpenAIEmbeddings<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token literal-property property\">apiKey<\/span><span class=\"token operator\">:<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">OPENAI_API_KEY<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">model<\/span><span class=\"token operator\">:<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">EMBEDDING_MODEL_NAME<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">configuration<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token literal-property property\">baseURL<\/span><span class=\"token operator\">:<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">OPENAI_BASE_URL<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">dimensions<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">VECTOR_DIM<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">const<\/span> client <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">MilvusClient<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token literal-property property\">address<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">ADDRESS<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">token<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">TOKEN<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token function-variable function\">getEmbedding<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\">text<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">const<\/span> result <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> embeddings<span class=\"token punctuation\">.<\/span><span class=\"token function\">embedQuery<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">return<\/span> result<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8fd9\u91cc\u7ee7\u7eed\u4f7f\u7528\u4e0e\u5165\u5e93\u9636\u6bb5\u76f8\u540c\u7684 COLLECTION_NAME\u3001VECTOR_DIM\u3001EMBEDDING_MODEL_NAME \u548c\u670d\u52a1\u914d\u7f6e\u3002\u6587\u6863\u5411\u91cf\u4e0e\u95ee\u9898\u5411\u91cf\u53ea\u6709\u4f4d\u4e8e\u540c\u4e00\u4e2a\u8bed\u4e49\u7a7a\u95f4\u4e2d&#xff0c;\u8ddd\u79bb\u6bd4\u8f83\u624d\u6709\u610f\u4e49\u3002<\/p>\n<p>IndexType \u548c DataType \u4e00\u5e76\u4ece Milvus SDK \u5bfc\u5165&#xff0c;\u4f7f\u4ee3\u7801\u4e2d\u7684 SDK \u7c7b\u578b\u6765\u6e90\u4fdd\u6301\u96c6\u4e2d&#xff1b;\u5b9e\u9645\u6267\u884c\u641c\u7d22\u65f6\u4f7f\u7528\u7684\u662f MilvusClient \u4e0e MetricType\u3002<\/p>\n<h3>4.3 \u641c\u7d22 Top 3 \u5e76\u6253\u5370\u7ed3\u679c<\/h3>\n<p>\u7b2c\u4e8c\u90e8\u5206\u8fdb\u5165\u67e5\u8be2\u4e3b\u6d41\u7a0b&#xff1a;<\/p>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;Connecting to Milvus&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span>connectPromise<span class=\"token punctuation\">;<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;connected\\\\n&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span><span class=\"token function\">loadCollection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token literal-property property\">collection_name<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">COLLECTION_NAME<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">const<\/span> query <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;\u6bb5\u8a89\u4f1a\u4ec0\u4e48\u6b66\u529f?&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> queryVector <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token function\">getEmbedding<\/span><span class=\"token punctuation\">(<\/span>query<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> searchResult <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span><span class=\"token function\">search<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token literal-property property\">collection_name<\/span><span class=\"token operator\">:<\/span><span class=\"token constant\">COLLECTION_NAME<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      <span class=\"token literal-property property\">vector<\/span><span class=\"token operator\">:<\/span> queryVector<span class=\"token punctuation\">,<\/span><br \/>\n      <span class=\"token literal-property property\">limit<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      <span class=\"token literal-property property\">metric_type<\/span><span class=\"token operator\">:<\/span> MetricType<span class=\"token punctuation\">.<\/span><span class=\"token constant\">COSINE<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      <span class=\"token literal-property property\">output_fields<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;id&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;book_id&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;chapter_num&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;index&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;content&#034;<\/span><span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    searchResult<span class=\"token punctuation\">.<\/span>results<span class=\"token punctuation\">.<\/span><span class=\"token function\">forEach<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">item<span class=\"token punctuation\">,<\/span> index<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\"><br \/>\n      <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>index <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">.[Score:<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>item<span class=\"token punctuation\">.<\/span>score<span class=\"token punctuation\">.<\/span><span class=\"token function\">toFixed<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">]\\\\n<br \/>\n      ID: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>item<span class=\"token punctuation\">.<\/span>id<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">  \\\\n<br \/>\n      BookId: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>item<span class=\"token punctuation\">.<\/span>book_id<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">\\\\n<br \/>\n      Content: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>item<span class=\"token punctuation\">.<\/span>content<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\"> \\\\n<br \/>\n      <\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">.<\/span><span class=\"token function\">catch<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">err<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u5148\u7b49\u5f85\u8fde\u63a5\u5b8c\u6210&#xff0c;\u518d\u901a\u8fc7 loadCollection() \u628a ebook \u96c6\u5408\u52a0\u8f7d\u5230\u53ef\u641c\u7d22\u72b6\u6001\u3002\u95ee\u9898\u4fdd\u5b58\u5728 query \u4e2d&#xff0c;getEmbedding(query) \u8fd4\u56de\u67e5\u8be2\u5411\u91cf\u3002<\/p>\n<p>client.search() \u7684\u53c2\u6570\u542b\u4e49\u5982\u4e0b&#xff1a;<\/p>\n<table>\n<tr>\u53c2\u6570\u5f53\u524d\u503c\u4f5c\u7528<\/tr>\n<tbody>\n<tr>\n<td>collection_name<\/td>\n<td>ebook<\/td>\n<td>\u6307\u5b9a\u641c\u7d22\u7684\u96c6\u5408<\/td>\n<\/tr>\n<tr>\n<td>vector<\/td>\n<td>queryVector<\/td>\n<td>\u4f20\u5165\u95ee\u9898\u5411\u91cf<\/td>\n<\/tr>\n<tr>\n<td>limit<\/td>\n<td>3<\/td>\n<td>\u8fd4\u56de\u76f8\u4f3c\u5ea6\u6700\u9ad8\u7684\u4e09\u6761\u8bb0\u5f55<\/td>\n<\/tr>\n<tr>\n<td>metric_type<\/td>\n<td>MetricType.COSINE<\/td>\n<td>\u4f7f\u7528\u4f59\u5f26\u76f8\u4f3c\u5ea6\u6392\u5e8f<\/td>\n<\/tr>\n<tr>\n<td>output_fields<\/td>\n<td>\u4e94\u4e2a\u4e1a\u52a1\u5b57\u6bb5<\/td>\n<td>\u8fd4\u56de\u4e3b\u952e\u3001\u4e66\u7c4d ID\u3001\u7ae0\u8282\u3001\u5e8f\u53f7\u548c\u539f\u6587<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u641c\u7d22\u5b8c\u6210\u540e&#xff0c;searchResult.results \u662f\u7ed3\u679c\u6570\u7ec4\u3002forEach() \u6309\u6392\u540d\u9010\u6761\u8f93\u51fa&#xff0c;item.score.toFixed(4) \u5c06\u5206\u6570\u4fdd\u7559\u56db\u4f4d\u5c0f\u6570&#xff0c;item.id \u4e0e item.book_id \u7528\u4e8e\u5b9a\u4f4d\u8bb0\u5f55&#xff0c;item.content \u5219\u663e\u793a\u771f\u6b63\u547d\u4e2d\u7684\u5c0f\u8bf4\u7247\u6bb5\u3002<\/p>\n<p>\u9a8c\u8bc1\u65f6\u5e94\u540c\u65f6\u89c2\u5bdf\u5206\u6570\u548c\u539f\u6587\u3002\u5206\u6570\u4f53\u73b0\u5411\u91cf\u76f8\u4f3c\u5ea6&#xff0c;\u539f\u6587\u5219\u51b3\u5b9a\u7ed3\u679c\u662f\u5426\u771f\u6b63\u56de\u7b54\u4e86\u95ee\u9898\u3002Top 1\u3001Top 2\u3001Top 3 \u7684\u5185\u5bb9\u8d8a\u96c6\u4e2d&#xff0c;\u8bf4\u660e\u8fd9\u6b21\u8bed\u4e49\u68c0\u7d22\u8d8a\u7a33\u5b9a\u3002<\/p>\n<h2>5. rag.mjs&#xff1a;\u7ec4\u5408\u68c0\u7d22\u7ed3\u679c\u5e76\u751f\u6210\u7b54\u6848<\/h2>\n<h3>5.1 \u6587\u4ef6\u804c\u8d23\u4e0e\u603b\u4f53\u6d41\u7a0b<\/h3>\n<p>rag.mjs \u5728\u5411\u91cf\u68c0\u7d22\u57fa\u7840\u4e0a\u52a0\u5165 ChatOpenAI\u3002\u5b83\u5148\u641c\u7d22\u76f8\u5173\u5c0f\u8bf4\u7247\u6bb5&#xff0c;\u518d\u628a\u7247\u6bb5\u62fc\u63a5\u4e3a context&#xff0c;\u6700\u540e\u7528 Prompt \u544a\u8bc9\u804a\u5929\u6a21\u578b\u5e94\u5982\u4f55\u4f7f\u7528\u8fd9\u4e9b\u5185\u5bb9\u3002<\/p>\n<p>\u5b8c\u6574\u94fe\u8def\u4e3a&#xff1a;<\/p>\n<p>\u95ee\u9898 \u2192 Embedding \u2192 Milvus Top K \u2192 context \u2192 prompt \u2192 ChatOpenAI.invoke() \u2192 response.content<\/p>\n<p>\u5728\u8fd9\u4e2a\u6587\u4ef6\u4e2d&#xff0c;OpenAIEmbeddings \u8d1f\u8d23\u7406\u89e3\u201c\u95ee\u9898\u548c\u6587\u6863\u662f\u5426\u76f8\u4f3c\u201d&#xff0c;ChatOpenAI \u8d1f\u8d23\u628a\u591a\u4e2a\u7247\u6bb5\u7ec4\u7ec7\u6210\u901a\u987a\u3001\u8be6\u7ec6\u7684\u81ea\u7136\u8bed\u8a00\u7b54\u6848\u3002<\/p>\n<h3>5.2 \u521d\u59cb\u5316 Embedding\u3001ChatOpenAI \u4e0e Milvus<\/h3>\n<p>\u7b2c\u4e00\u5757\u4ee3\u7801\u5b8c\u6210\u4e24\u4e2a\u6a21\u578b\u7ec4\u4ef6\u548c\u6570\u636e\u5e93\u5ba2\u6237\u7aef\u7684\u521d\u59cb\u5316&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token string\">&#039;dotenv\/config&#039;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  MilvusClient<span class=\"token punctuation\">,<\/span>   <span class=\"token comment\">\/\/ C\/S\u67b6\u6784  B\/S<\/span><br \/>\n  MetricType<span class=\"token punctuation\">,<\/span> <span class=\"token comment\">\/\/ \u76f8\u4f3c\u5ea6\u6c42\u65b9\u6cd5<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;zilliz\/milvus2-sdk-node&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  ChatOpenAI<span class=\"token punctuation\">,<\/span><br \/>\n  OpenAIEmbeddings<br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;langchain\/openai&#039;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u4e91\u7aef\u5730\u5740<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">ADDRESS<\/span> <span class=\"token operator\">&#061;<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">MILVUS_ADDRESS<\/span><br \/>\n<span class=\"token comment\">\/\/ API key<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">TOKEN<\/span> <span class=\"token operator\">&#061;<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">MILVUS_TOKEN<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">COLLECTION_NAME<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;ebook&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token constant\">VECTOR_DIM<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1024<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">const<\/span> embeddings <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">OpenAIEmbeddings<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token literal-property property\">apiKey<\/span><span class=\"token operator\">:<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">OPENAI_API_KEY<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">model<\/span><span class=\"token operator\">:<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">EMBEDDING_MODEL_NAME<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">configuration<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token literal-property property\">baseURL<\/span><span class=\"token operator\">:<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">OPENAI_BASE_URL<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">dimensions<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">VECTOR_DIM<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">const<\/span> model <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ChatOpenAI<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token literal-property property\">temperature<\/span><span class=\"token operator\">:<\/span> <span class=\"token number\">0.1<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">model<\/span><span class=\"token operator\">:<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">MODEL_NAME<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">apiKey<\/span><span class=\"token operator\">:<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">OPENAI_API_KEY<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">configuration<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token literal-property property\">baseURL<\/span><span class=\"token operator\">:<\/span> process<span class=\"token punctuation\">.<\/span>env<span class=\"token punctuation\">.<\/span><span class=\"token constant\">OPENAI_BASE_URL<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">const<\/span> client <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">MilvusClient<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token literal-property property\">address<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">ADDRESS<\/span><span class=\"token punctuation\">,<\/span><br \/>\n  <span class=\"token literal-property property\">token<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">TOKEN<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token function-variable function\">getEmbedding<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token parameter\">text<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">const<\/span> result <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> embeddings<span class=\"token punctuation\">.<\/span><span class=\"token function\">embedQuery<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">return<\/span> result<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>OpenAIEmbeddings \u7ee7\u7eed\u5904\u7406\u95ee\u9898\u5411\u91cf&#xff0c;\u914d\u7f6e\u6765\u81ea EMBEDDING_MODEL_NAME\u3002ChatOpenAI \u5219\u4f7f\u7528 MODEL_NAME \u6307\u5b9a\u804a\u5929\u6a21\u578b\u3002<\/p>\n<p>temperature: 0.1 \u63a7\u5236\u751f\u6210\u968f\u673a\u6027\u3002\u8f83\u4f4e\u7684 temperature \u66f4\u9002\u5408\u77e5\u8bc6\u95ee\u7b54&#xff1a;\u6a21\u578b\u4f1a\u66f4\u7a33\u5b9a\u5730\u56f4\u7ed5\u73b0\u6709\u4e0a\u4e0b\u6587\u7ec4\u7ec7\u7b54\u6848&#xff0c;\u800c\u4e0d\u662f\u8ffd\u6c42\u5f00\u653e\u5f0f\u521b\u4f5c\u3002<\/p>\n<table>\n<tr>\u7ec4\u4ef6\u8f93\u5165\u8f93\u51fa\u804c\u8d23<\/tr>\n<tbody>\n<tr>\n<td>OpenAIEmbeddings<\/td>\n<td>\u7528\u6237\u95ee\u9898<\/td>\n<td>\u6570\u503c\u5411\u91cf<\/td>\n<td>\u4e3a Milvus \u641c\u7d22\u63d0\u4f9b\u67e5\u8be2\u5411\u91cf<\/td>\n<\/tr>\n<tr>\n<td>MilvusClient<\/td>\n<td>\u67e5\u8be2\u5411\u91cf<\/td>\n<td>\u76f8\u4f3c\u7247\u6bb5\u6570\u7ec4<\/td>\n<td>\u627e\u5230\u4e0e\u95ee\u9898\u6709\u5173\u7684\u5c0f\u8bf4\u5185\u5bb9<\/td>\n<\/tr>\n<tr>\n<td>ChatOpenAI<\/td>\n<td>Prompt \u5b57\u7b26\u4e32<\/td>\n<td>AIMessage<\/td>\n<td>\u57fa\u4e8e\u4e0a\u4e0b\u6587\u751f\u6210\u6700\u7ec8\u7b54\u6848<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>5.3 \u5c01\u88c5 Retriever \u68c0\u7d22\u51fd\u6570<\/h3>\n<p>retrieveRelevantContent() \u53ea\u8d1f\u8d23\u68c0\u7d22&#xff0c;\u4e0d\u8d1f\u8d23\u751f\u6210\u7b54\u6848&#xff0c;\u4f53\u73b0\u4e86\u6e90\u7801\u6ce8\u91ca\u4e2d\u201c\u4e00\u4e2a\u51fd\u6570\u4e00\u4e2a\u529f\u80fd\u3001\u53ea\u6709\u4e00\u4e2a\u8fd4\u56de\u503c\u201d\u7684\u601d\u8def&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ RAG \u56fe\u4e66\u4e1a\u52a1\u77e5\u8bc6\u5e93\u5316<\/span><br \/>\n<span class=\"token comment\">\/\/ \u51fd\u6570\u540d\u53ef\u8bfb\u6027<\/span><br \/>\n<span class=\"token comment\">\/\/ \u4e00\u4e2a\u51fd\u6570\u4e00\u4e2a\u529f\u80fd<\/span><br \/>\n<span class=\"token comment\">\/\/ \u53ea\u6709\u4e00\u4e2a\u8fd4\u56de\u503c<\/span><br \/>\n<span class=\"token keyword\">async<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">retrieveRelevantContent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">question<span class=\"token punctuation\">,<\/span> k <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> queryVector <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token function\">getEmbedding<\/span><span class=\"token punctuation\">(<\/span>question<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> searchResult <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span><span class=\"token function\">search<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token literal-property property\">collection_name<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">COLLECTION_NAME<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      <span class=\"token literal-property property\">vectors<\/span><span class=\"token operator\">:<\/span> queryVector<span class=\"token punctuation\">,<\/span><br \/>\n      <span class=\"token literal-property property\">limit<\/span><span class=\"token operator\">:<\/span> k<span class=\"token punctuation\">,<\/span><br \/>\n      <span class=\"token literal-property property\">metric_type<\/span><span class=\"token operator\">:<\/span> MetricType<span class=\"token punctuation\">.<\/span><span class=\"token constant\">COSINE<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      <span class=\"token literal-property property\">output_fields<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;id&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;book_id&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;chapter_num&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;index&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;content&#039;<\/span><span class=\"token punctuation\">]<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> searchResult<span class=\"token punctuation\">.<\/span>results<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u68c0\u7d22\u76f8\u5173\u5185\u5bb9\u65f6\u51fa\u9519:&#039;<\/span><span class=\"token punctuation\">,<\/span> err<span class=\"token punctuation\">.<\/span>message<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u51fd\u6570\u63a5\u6536\u4e24\u4e2a\u53c2\u6570&#xff1a;question \u662f\u7528\u6237\u95ee\u9898&#xff0c;k \u662f\u8fd4\u56de\u7247\u6bb5\u6570\u91cf&#xff0c;\u9ed8\u8ba4\u503c\u4e3a 3\u3002getEmbedding(question) \u5148\u751f\u6210\u95ee\u9898\u5411\u91cf&#xff0c;\u968f\u540e client.search() \u5728 ebook \u96c6\u5408\u4e2d\u8fdb\u884c\u4f59\u5f26\u76f8\u4f3c\u5ea6\u641c\u7d22\u3002<\/p>\n<table>\n<tr>\u53c2\u6570\u542b\u4e49<\/tr>\n<tbody>\n<tr>\n<td>collection_name<\/td>\n<td>\u6307\u5b9a\u68c0\u7d22 ebook \u96c6\u5408<\/td>\n<\/tr>\n<tr>\n<td>vectors<\/td>\n<td>\u4f20\u5165\u5f53\u524d\u95ee\u9898\u7684\u5411\u91cf<\/td>\n<\/tr>\n<tr>\n<td>limit<\/td>\n<td>\u7531 k \u51b3\u5b9a\u8fd4\u56de\u591a\u5c11\u6761<\/td>\n<\/tr>\n<tr>\n<td>metric_type<\/td>\n<td>\u4f7f\u7528 COSINE \u4fdd\u6301\u4e0e\u7d22\u5f15\u4e00\u81f4<\/td>\n<\/tr>\n<tr>\n<td>output_fields<\/td>\n<td>\u8fd4\u56de\u6784\u9020\u4e0a\u4e0b\u6587\u6240\u9700\u7684\u5b57\u6bb5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6210\u529f\u65f6\u51fd\u6570\u8fd4\u56de searchResult.results&#xff1b;\u68c0\u7d22\u53d1\u751f\u5f02\u5e38\u65f6\u8f93\u51fa\u9519\u8bef\u4fe1\u606f\u5e76\u8fd4\u56de\u7a7a\u6570\u7ec4\u3002\u8fd9\u6837\u8c03\u7528\u65b9\u59cb\u7ec8\u63a5\u6536\u6570\u7ec4&#xff0c;\u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7 length \u5224\u65ad\u662f\u5426\u627e\u5230\u5185\u5bb9\u3002<\/p>\n<h3>5.4 \u6784\u9020\u4e0a\u4e0b\u6587\u4e0e Prompt<\/h3>\n<p>answerEbookQuestion() \u8d1f\u8d23\u628a Retriever \u7684\u7ed3\u679c\u52a0\u5de5\u6210\u5927\u6a21\u578b\u53ef\u4ee5\u9605\u8bfb\u7684\u4e0a\u4e0b\u6587&#xff1a;<\/p>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">answerEbookQuestion<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">question<span class=\"token punctuation\">,<\/span> k <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> relevantContent <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token function\">retrieveRelevantContent<\/span><span class=\"token punctuation\">(<\/span>question<span class=\"token punctuation\">,<\/span> k<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>relevantContent<span class=\"token punctuation\">.<\/span>length <span class=\"token operator\">&#061;&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u6ca1\u6709\u627e\u5230\u76f8\u5173\u7684\u5185\u5bb9&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#034;\u62b1\u6b49,\u6211\u6ca1\u6709\u627e\u5230\u76f8\u5173\u7684\u300a\u5929\u9f99\u516b\u90e8\u300b\u7684\u5185\u5bb9\u3002&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> context <span class=\"token operator\">&#061;<\/span> relevantContent<span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">item<span class=\"token punctuation\">,<\/span> i<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\"><br \/>\n  [\u7247\u6bb5<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>i <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">]<br \/>\n  \u7ae0\u8282: \u7b2c<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>item<span class=\"token punctuation\">.<\/span>chapter_num<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">\u7ae0<br \/>\n  \u5185\u5bb9: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>item<span class=\"token punctuation\">.<\/span>content<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\"><br \/>\n  <\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">join<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\\\\n&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> prompt <span class=\"token operator\">&#061;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\"><br \/>\n  \u4f60\u662f\u4e00\u4e2a\u4e13\u4e1a\u7684\u300a\u5929\u9f99\u516b\u90e8\u300b\u5c0f\u8bf4\u52a9\u624b\u3002<br \/>\n  \u57fa\u4e8e\u5c0f\u8bf4\u56de\u7b54\u95ee\u9898&#xff0c;\u7528\u51c6\u786e\u3001\u8be6\u7ec6\u7684\u8bed\u8a00\u3002<br \/>\n  \u8bf7\u6839\u636e\u4ee5\u4e0b\u5c0f\u8bf4\u7247\u6bb5\u5185\u5bb9\u56de\u7b54\u95ee\u9898<br \/>\n  <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>context<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\"><br \/>\n  \u7528\u6237\u95ee\u9898: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>question<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\"><\/p>\n<p>  \u56de\u7b54\u8981\u6c42:<br \/>\n  1.\u5982\u679c\u7247\u6bb5\u4e2d\u6709\u76f8\u5173\u4fe1\u606f&#xff0c;\u8bf7\u7ed3\u5408\u5c0f\u8bf4\u5185\u5bb9\u7ed9\u51fa\u8be6\u7ec6\u51c6\u786e\u7684\u7b54\u6848\u3002<br \/>\n  \u5982\u679c\u6ca1\u6709&#xff0c;\u8bf7\u8bf4\u4e0d\u77e5\u9053<br \/>\n  2.\u5982\u679c\u53ef\u4ee5\u7efc\u5408\u591a\u4e2a\u7247\u6bb5\u7684\u5185\u5bb9&#xff0c;\u63d0\u4f9b\u5b8c\u6574\u7684\u7b54\u6848\u3002<br \/>\n  3.\u5982\u679c\u7247\u6bb5\u4e2d\u6ca1\u6709\u76f8\u5173\u4fe1\u606f&#xff0c;\u8bf7\u5982\u5b9e\u544a\u8bc9\u7528\u6237\u3002<br \/>\n  4.\u56de\u7b54\u8981\u51c6\u786e&#xff0c;\u7b26\u5408\u5c0f\u8bf4\u7684\u60c5\u8282\u548c\u4eba\u7269\u8bbe\u5b9a\u3002<br \/>\n  5.\u53ef\u4ee5\u5f15\u7528\u539f\u6587\u5185\u5bb9\u6765\u652f\u6301\u4f60\u7684\u56de\u7b54\u3002<br \/>\n  AI \u52a9\u624b\u7684\u56de\u7b54:<br \/>\n  <\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><\/p>\n<p>    <span class=\"token keyword\">const<\/span> response <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> model<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span>prompt<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> response<span class=\"token punctuation\">.<\/span>content<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u56de\u7b54\u95ee\u9898\u65f6\u51fa\u9519:&#039;<\/span><span class=\"token punctuation\">,<\/span> err<span class=\"token punctuation\">.<\/span>message<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u51fd\u6570\u5148\u8c03\u7528 retrieveRelevantContent(question, k)\u3002\u5982\u679c\u7ed3\u679c\u6570\u7ec4\u4e3a\u7a7a&#xff0c;\u5c31\u76f4\u63a5\u8fd4\u56de\u672a\u627e\u5230\u5185\u5bb9\u7684\u63d0\u793a&#xff0c;\u4e0d\u518d\u8bf7\u6c42\u804a\u5929\u6a21\u578b\u3002<\/p>\n<p>\u627e\u5230\u5185\u5bb9\u540e&#xff0c;map() \u628a\u6bcf\u6761\u8bb0\u5f55\u8f6c\u6362\u4e3a\u4e00\u4e2a\u5e26\u7f16\u53f7\u7684\u6587\u672c\u7247\u6bb5&#xff1a;<\/p>\n<ul>\n<li>[\u7247\u6bb51]\u3001[\u7247\u6bb52] \u7528\u4e8e\u533a\u5206\u591a\u6761\u53ec\u56de\u7ed3\u679c&#xff1b;<\/li>\n<li>\u7ae0\u8282 \u6765\u81ea Milvus \u7684 chapter_num&#xff1b;<\/li>\n<li>\u5185\u5bb9 \u6765\u81ea Milvus \u7684 content\u3002<\/li>\n<\/ul>\n<p>\u6240\u6709\u7247\u6bb5\u901a\u8fc7 .join(&#039;\\\\n&#039;) \u5408\u5e76\u6210 context\u3002Prompt \u968f\u540e\u4f9d\u6b21\u5199\u5165\u52a9\u624b\u89d2\u8272\u3001\u5c0f\u8bf4\u7247\u6bb5\u3001\u7528\u6237\u95ee\u9898\u548c\u56de\u7b54\u8981\u6c42\u3002\u4e94\u6761\u89c4\u5219\u5171\u540c\u9650\u5236\u7b54\u6848&#xff1a;<\/p>\n<table>\n<tr>\u89c4\u5219\u76ee\u7684<\/tr>\n<tbody>\n<tr>\n<td>\u6709\u76f8\u5173\u4fe1\u606f\u65f6\u8be6\u7ec6\u56de\u7b54<\/td>\n<td>\u5145\u5206\u4f7f\u7528\u53ec\u56de\u5185\u5bb9<\/td>\n<\/tr>\n<tr>\n<td>\u65e0\u76f8\u5173\u4fe1\u606f\u65f6\u8bf4\u4e0d\u77e5\u9053<\/td>\n<td>\u907f\u514d\u8131\u79bb\u7247\u6bb5\u731c\u6d4b<\/td>\n<\/tr>\n<tr>\n<td>\u53ef\u4ee5\u7efc\u5408\u591a\u4e2a\u7247\u6bb5<\/td>\n<td>\u652f\u6301\u8de8\u7247\u6bb5\u6574\u7406\u4fe1\u606f<\/td>\n<\/tr>\n<tr>\n<td>\u7b26\u5408\u60c5\u8282\u4e0e\u4eba\u7269\u8bbe\u5b9a<\/td>\n<td>\u4fdd\u8bc1\u7b54\u6848\u4e0e\u5c0f\u8bf4\u8bed\u5883\u4e00\u81f4<\/td>\n<\/tr>\n<tr>\n<td>\u53ef\u4ee5\u5f15\u7528\u539f\u6587<\/td>\n<td>\u8ba9\u56de\u7b54\u62e5\u6709\u6587\u672c\u4f9d\u636e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>model.invoke(prompt) \u8fd4\u56de\u6d88\u606f\u5bf9\u8c61&#xff0c;\u771f\u6b63\u7684\u7b54\u6848\u4f4d\u4e8e response.content\u3002\u51fd\u6570\u6700\u540e\u53ea\u8fd4\u56de\u8fd9\u4e00\u5b57\u6bb5&#xff0c;\u4f7f\u8c03\u7528\u65b9\u83b7\u5f97\u53ef\u76f4\u63a5\u8f93\u51fa\u7684\u6587\u672c\u3002<\/p>\n<h3>5.5 \u6267\u884c\u5b8c\u6574 RAG \u95ee\u7b54<\/h3>\n<p>\u6700\u540e\u4e00\u5757\u4ee3\u7801\u52a0\u8f7d\u96c6\u5408\u3001\u63d0\u51fa\u95ee\u9898\u5e76\u6253\u5370\u7b54\u6848&#xff1a;<\/p>\n<p><span class=\"token keyword\">async<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> client<span class=\"token punctuation\">.<\/span><span class=\"token function\">loadCollection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token literal-property property\">collection_name<\/span><span class=\"token operator\">:<\/span> <span class=\"token constant\">COLLECTION_NAME<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u96c6\u5408\u52a0\u8f7d\u6210\u529f&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> result <span class=\"token operator\">&#061;<\/span><br \/>\n      <span class=\"token keyword\">await<\/span> <span class=\"token function\">answerEbookQuestion<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u9e20\u6469\u667a\u4f1a\u4ec0\u4e48\u6b66\u529f&#xff1f;&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>result<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">.<\/span><span class=\"token function\">catch<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">err<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5165\u53e3\u5148\u8c03\u7528 loadCollection()&#xff0c;\u518d\u6267\u884c answerEbookQuestion(&#039;\u9e20\u6469\u667a\u4f1a\u4ec0\u4e48\u6b66\u529f&#xff1f;&#039;, 5)\u3002\u867d\u7136\u51fd\u6570\u9ed8\u8ba4 k &#061; 3&#xff0c;\u8fd9\u91cc\u663e\u5f0f\u4f20\u5165 5&#xff0c;\u56e0\u6b64\u672c\u6b21\u95ee\u7b54\u4f1a\u53d6\u4e94\u4e2a\u76f8\u5173\u7247\u6bb5\u4f5c\u4e3a\u4e0a\u4e0b\u6587\u3002<\/p>\n<p>\u8c03\u7528\u94fe\u53ef\u4ee5\u6574\u7406\u4e3a&#xff1a;<\/p>\n<p>main() \u2192 answerEbookQuestion() \u2192 retrieveRelevantContent() \u2192 getEmbedding() \u2192 client.search() \u2192 model.invoke()<\/p>\n<p>\u8fd9\u6761\u94fe\u8def\u5148\u68c0\u7d22\u3001\u540e\u751f\u6210\u3002\u53ea\u6709\u5728\u53ec\u56de\u6570\u7ec4\u4e0d\u4e3a\u7a7a\u65f6\u624d\u4f1a\u8c03\u7528\u804a\u5929\u6a21\u578b&#xff0c;\u6700\u540e\u901a\u8fc7 console.log(result) \u8f93\u51fa\u56de\u7b54\u3002<\/p>\n<h2>6. \u8fd0\u884c\u987a\u5e8f\u4e0e\u7ed3\u679c\u9a8c\u8bc1<\/h2>\n<h3>6.1 \u7b2c\u4e00\u6b21\u8fd0\u884c\u7684\u6b63\u786e\u987a\u5e8f<\/h3>\n<p>\u5148\u6267\u884c\u5165\u5e93\u7a0b\u5e8f&#xff1a;<\/p>\n<p><span class=\"token function\">node<\/span> src\/main.mjs<\/p>\n<p>main.mjs \u4f1a\u8fde\u63a5 Milvus\u3001\u521b\u5efa\u6216\u52a0\u8f7d ebook \u96c6\u5408&#xff0c;\u5e76\u5904\u7406\u6574\u672c EPUB\u3002\u63a7\u5236\u53f0\u4f1a\u6301\u7eed\u8f93\u51fa\u5f53\u524d\u7ae0\u8282\u3001\u5207\u7247\u6570\u91cf\u548c\u7d2f\u8ba1\u63d2\u5165\u8bb0\u5f55\u6570\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/07\/20260731072522-6a6c4de2cdad7.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u5165\u5e93\u5b8c\u6210\u540e\u8fd0\u884c\u68c0\u7d22\u9a8c\u8bc1&#xff1a;<\/p>\n<p><span class=\"token function\">node<\/span> src\/query.mjs<\/p>\n<p>\u5982\u679c\u914d\u7f6e\u548c\u5165\u5e93\u6d41\u7a0b\u6b63\u5e38&#xff0c;\u63a7\u5236\u53f0\u4f1a\u8f93\u51fa\u4e09\u6761\u7ed3\u679c&#xff0c;\u6bcf\u6761\u5305\u542b Score\u3001ID\u3001BookId \u4e0e Content\u3002\u91cd\u70b9\u89c2\u5bdf Content \u662f\u5426\u4e0e\u201c\u6bb5\u8a89\u4f1a\u4ec0\u4e48\u6b66\u529f\u201d\u76f8\u5173\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/07\/20260731072523-6a6c4de33c083.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/07\/20260731072523-6a6c4de3cee95.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/07\/20260731072524-6a6c4de458372.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u6700\u540e\u6267\u884c\u5b8c\u6574 RAG&#xff1a;<\/p>\n<p><span class=\"token function\">node<\/span> src\/rag.mjs<\/p>\n<p>rag.mjs \u4f1a\u68c0\u7d22\u4e94\u6761\u76f8\u5173\u7247\u6bb5&#xff0c;\u518d\u7531\u804a\u5929\u6a21\u578b\u56f4\u7ed5\u8fd9\u4e9b\u7247\u6bb5\u56de\u7b54\u201c\u9e20\u6469\u667a\u4f1a\u4ec0\u4e48\u6b66\u529f&#xff1f;\u201d\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/07\/20260731072524-6a6c4de4d5a02.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/07\/20260731072525-6a6c4de5d0530.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>6.2 \u5e38\u89c1\u8fd0\u884c\u73b0\u8c61\u4e0e\u6392\u67e5\u65b9\u5411<\/h3>\n<table>\n<tr>\u73b0\u8c61\u4f18\u5148\u68c0\u67e5\u5185\u5bb9\u539f\u56e0\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>\u627e\u4e0d\u5230 EPUB<\/td>\n<td>\u5f53\u524d\u7ec8\u7aef\u6240\u5728\u76ee\u5f55\u3001EPUB_FILE<\/td>\n<td>.\/\u5929\u9f99\u516b\u90e8.epub \u662f\u76f8\u5bf9\u9879\u76ee\u6839\u76ee\u5f55\u7684\u8def\u5f84<\/td>\n<\/tr>\n<tr>\n<td>\u6a21\u578b\u63a5\u53e3\u65e0\u6cd5\u8bbf\u95ee<\/td>\n<td>OPENAI_API_KEY\u3001OPENAI_BASE_URL<\/td>\n<td>Embedding \u4e0e\u804a\u5929\u8bf7\u6c42\u90fd\u4f9d\u8d56\u517c\u5bb9\u63a5\u53e3<\/td>\n<\/tr>\n<tr>\n<td>Milvus \u65e0\u6cd5\u8fde\u63a5<\/td>\n<td>MILVUS_ADDRESS\u3001MILVUS_TOKEN<\/td>\n<td>\u5730\u5740\u6216\u8ba4\u8bc1\u4fe1\u606f\u51b3\u5b9a\u5ba2\u6237\u7aef\u80fd\u5426\u8bbf\u95ee\u670d\u52a1<\/td>\n<\/tr>\n<tr>\n<td>\u7b2c\u4e00\u6b21\u8fd0\u884c\u7b49\u5f85\u8f83\u4e45<\/td>\n<td>EPUB \u4f53\u79ef\u3001\u5207\u7247\u6570\u91cf\u3001\u63a5\u53e3\u54cd\u5e94\u901f\u5ea6<\/td>\n<td>\u9700\u8981\u4e3a\u5927\u91cf\u7247\u6bb5\u9010\u4e00\u751f\u6210\u5411\u91cf<\/td>\n<\/tr>\n<tr>\n<td>Query \u6ca1\u6709\u7406\u60f3\u7247\u6bb5<\/td>\n<td>Score\u3001\u8f93\u51fa\u7684 Content<\/td>\n<td>\u9700\u8981\u5148\u4ece\u68c0\u7d22\u7ed3\u679c\u5224\u65ad\u95ee\u9898\u4e0e\u7247\u6bb5\u7684\u8bed\u4e49\u5339\u914d\u60c5\u51b5<\/td>\n<\/tr>\n<tr>\n<td>RAG \u8fd4\u56de\u672a\u627e\u5230\u5185\u5bb9<\/td>\n<td>Retriever \u8fd4\u56de\u7a7a\u6570\u7ec4<\/td>\n<td>answerEbookQuestion() \u4f1a\u76f4\u63a5\u8fd4\u56de\u9884\u8bbe\u63d0\u793a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6392\u67e5\u65f6\u6700\u597d\u6cbf\u7740\u4ee3\u7801\u5b9e\u9645\u6267\u884c\u987a\u5e8f\u8fdb\u884c&#xff1a;\u5148\u786e\u8ba4 EPUB \u80fd\u5426\u52a0\u8f7d&#xff0c;\u518d\u89c2\u5bdf\u5207\u7247\u6570\u91cf&#xff0c;\u7136\u540e\u786e\u8ba4\u5411\u91cf\u751f\u6210\u548c\u6570\u636e\u63d2\u5165&#xff0c;\u6700\u540e\u68c0\u67e5 query.mjs \u7684\u68c0\u7d22\u7ed3\u679c\u4e0e rag.mjs \u7684\u751f\u6210\u7ed3\u679c\u3002<\/p>\n<h2>7. \u4e09\u4e2a\u6587\u4ef6\u7684\u5b8c\u6574\u6d41\u7a0b\u590d\u76d8<\/h2>\n<h3>7.1 \u4ece\u7535\u5b50\u4e66\u5230\u5411\u91cf\u6570\u636e\u5e93<\/h3>\n<p>main.mjs \u542f\u52a8\u540e&#xff0c;\u5148\u901a\u8fc7 client.connectPromise \u8fde\u63a5 Milvus\u3002ensureCollection(bookId) \u68c0\u67e5 ebook \u662f\u5426\u5b58\u5728&#xff1b;\u4e0d\u5b58\u5728\u65f6\u521b\u5efa\u5305\u542b\u4e3b\u952e\u3001\u4e66\u7c4d\u4fe1\u606f\u3001\u7ae0\u8282\u4fe1\u606f\u3001\u539f\u6587\u548c\u5411\u91cf\u7684 Schema&#xff0c;\u5e76\u4e3a vector \u5b57\u6bb5\u521b\u5efa IVF_FLAT &#043; COSINE \u7d22\u5f15\u3002<\/p>\n<p>\u968f\u540e&#xff0c;EPubLoader.load() \u5c06\u7535\u5b50\u4e66\u52a0\u8f7d\u4e3a Document[]&#xff0c;RecursiveCharacterTextSplitter.splitText() \u5c06\u6bcf\u4e2a pageContent \u62c6\u6210\u591a\u4e2a Chunk\u3002insertChunksBatch() \u4f7f\u7528 Promise.all() \u5e76\u53d1\u6267\u884c getEmbedding(chunk)&#xff0c;\u751f\u6210\u5f53\u524d\u7ae0\u8282\u7684 insertData&#xff0c;\u518d\u4ea4\u7ed9 client.insert() \u4e00\u6b21\u5199\u5165 Milvus\u3002<\/p>\n<h3>7.2 \u4ece\u95ee\u9898\u5230\u76f8\u4f3c\u7247\u6bb5<\/h3>\n<p>query.mjs \u5c06\u201c\u6bb5\u8a89\u4f1a\u4ec0\u4e48\u6b66\u529f?\u201d\u4f20\u7ed9 getEmbedding()&#xff0c;\u5f97\u5230 queryVector\u3002client.search() \u5728 ebook \u96c6\u5408\u4e2d\u4f7f\u7528 MetricType.COSINE \u6392\u5e8f&#xff0c;limit: 3 \u51b3\u5b9a\u53ea\u8fd4\u56de\u524d\u4e09\u6761\u3002<\/p>\n<p>\u6bcf\u4e2a\u7ed3\u679c\u9664\u4e86 score&#xff0c;\u8fd8\u5e26\u6709 id\u3001book_id\u3001chapter_num\u3001index \u548c content\u3002\u8fd9\u4e00\u6b65\u8bc1\u660e\u5411\u91cf\u6570\u636e\u5e93\u4e0d\u4ec5\u80fd\u8fd4\u56de\u201c\u54ea\u4e2a\u5411\u91cf\u76f8\u8fd1\u201d&#xff0c;\u8fd8\u80fd\u540c\u65f6\u8fd4\u56de\u53ef\u9605\u8bfb\u3001\u53ef\u5b9a\u4f4d\u7684\u539f\u59cb\u7247\u6bb5\u3002<\/p>\n<h3>7.3 \u4ece\u76f8\u4f3c\u7247\u6bb5\u5230\u81ea\u7136\u8bed\u8a00\u7b54\u6848<\/h3>\n<p>rag.mjs \u5c06 Retriever \u548c\u804a\u5929\u6a21\u578b\u4e32\u8054\u8d77\u6765\u3002retrieveRelevantContent() \u8d1f\u8d23\u8fd4\u56de\u7247\u6bb5\u6570\u7ec4&#xff0c;answerEbookQuestion() \u8d1f\u8d23\u628a\u6570\u7ec4\u683c\u5f0f\u5316\u4e3a context \u5e76\u63d2\u5165 Prompt&#xff0c;ChatOpenAI.invoke() \u8d1f\u8d23\u751f\u6210\u7b54\u6848\u3002<\/p>\n<p>\u6574\u4e2a\u9879\u76ee\u7684\u6570\u636e\u53d8\u5316\u53ef\u4ee5\u7528\u4e0b\u8868\u590d\u76d8&#xff1a;<\/p>\n<table>\n<tr>\u9636\u6bb5\u6838\u5fc3 API\u8f93\u5165\u8f93\u51fa<\/tr>\n<tbody>\n<tr>\n<td>\u52a0\u8f7d<\/td>\n<td>EPubLoader.load()<\/td>\n<td>EPUB \u6587\u4ef6<\/td>\n<td>Document[]<\/td>\n<\/tr>\n<tr>\n<td>\u5207\u7247<\/td>\n<td>splitText()<\/td>\n<td>pageContent<\/td>\n<td>chunks<\/td>\n<\/tr>\n<tr>\n<td>\u6587\u6863\u5411\u91cf\u5316<\/td>\n<td>embedQuery()<\/td>\n<td>\u5355\u4e2a Chunk<\/td>\n<td>\u5411\u91cf\u6570\u7ec4<\/td>\n<\/tr>\n<tr>\n<td>\u5165\u5e93<\/td>\n<td>client.insert()<\/td>\n<td>insertData<\/td>\n<td>\u63d2\u5165\u6570\u91cf<\/td>\n<\/tr>\n<tr>\n<td>\u95ee\u9898\u5411\u91cf\u5316<\/td>\n<td>embedQuery()<\/td>\n<td>\u7528\u6237\u95ee\u9898<\/td>\n<td>queryVector<\/td>\n<\/tr>\n<tr>\n<td>\u53ec\u56de<\/td>\n<td>client.search()<\/td>\n<td>\u95ee\u9898\u5411\u91cf<\/td>\n<td>Top K \u7247\u6bb5<\/td>\n<\/tr>\n<tr>\n<td>\u4e0a\u4e0b\u6587\u6784\u9020<\/td>\n<td>map().join()<\/td>\n<td>\u68c0\u7d22\u7ed3\u679c\u6570\u7ec4<\/td>\n<td>context<\/td>\n<\/tr>\n<tr>\n<td>\u7b54\u6848\u751f\u6210<\/td>\n<td>model.invoke()<\/td>\n<td>Prompt<\/td>\n<td>AIMessage<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e09\u4efd\u4ee3\u7801\u5206\u522b\u5bf9\u5e94 RAG \u7cfb\u7edf\u4e2d\u6700\u91cd\u8981\u7684\u4e09\u5c42&#xff1a;\u6570\u636e\u52a0\u5de5\u5c42\u3001\u8bed\u4e49\u68c0\u7d22\u5c42\u3001\u7b54\u6848\u751f\u6210\u5c42\u3002\u5148\u628a\u6bcf\u4e00\u5c42\u72ec\u7acb\u8dd1\u901a&#xff0c;\u518d\u901a\u8fc7\u51fd\u6570\u8c03\u7528\u628a\u5b83\u4eec\u4e32\u8d77\u6765&#xff0c;\u80fd\u591f\u8ba9\u957f\u6587\u672c\u95ee\u7b54\u9879\u76ee\u7684\u7ed3\u6784\u4fdd\u6301\u6e05\u6670\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u8fd9\u4e2a\u9879\u76ee\u5b8c\u6574\u8dd1\u901a\u4e86 Loader\u3001Splitter\u3001Embedding\u3001Milvus \u4e0e RAG \u7684\u6838\u5fc3\u94fe\u8def\u3002main.mjs \u8d1f\u8d23\u628a EPUB \u52a0\u8f7d\u4e3a\u6587\u6863&#xff0c;\u901a\u8fc7 500 \u5b57\u7b26\u5207\u7247\u4e0e 50 \u5b57\u7b26\u91cd\u53e0\u4fdd\u7559\u4e0a\u4e0b\u6587&#xff0c;\u518d\u4e3a\u7247\u6bb5\u751f\u6210\u5411\u91cf\u5e76\u5199\u5165 ebook \u96c6\u5408&#xff1b;query.mjs \u4f7f\u7528\u540c\u4e00\u4e2a\u5411\u91cf\u6a21\u578b\u5904\u7406\u95ee\u9898&#xff0c;\u4ee5 COSINE \u76f8\u4f3c\u5ea6\u53d6\u56de Top 3 \u539f\u6587&#xff1b;rag.mjs \u8fdb\u4e00\u6b65\u628a Top 5 \u7ed3\u679c\u7ec4\u6210 Prompt&#xff0c;\u7531 ChatOpenAI \u751f\u6210\u5c0f\u8bf4\u95ee\u7b54\u7ed3\u679c\u3002\u7406\u89e3\u4e09\u4e2a\u6587\u4ef6\u4e4b\u95f4\u7684\u6570\u636e\u6d41\u540e&#xff0c;\u5c31\u80fd\u6e05\u695a\u770b\u5230 RAG 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