{"id":89441,"date":"2026-08-03T01:56:57","date_gmt":"2026-08-02T17:56:57","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/89441.html"},"modified":"2026-08-03T01:56:57","modified_gmt":"2026-08-02T17:56:57","slug":"%e5%a4%a7%e6%a8%a1%e5%9e%8b%e5%8f%88%e5%bc%80%e5%a7%8b%e4%b8%80%e6%9c%ac%e6%ad%a3%e7%bb%8f%e5%9c%b0%e8%83%a1%e8%af%b4%e4%ba%86%ef%bc%9f%e7%94%a8-python-%e6%89%8b%e5%86%99%e4%b8%80%e4%b8%aa%e6%9c%80","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/89441.html","title":{"rendered":"\u5927\u6a21\u578b\u53c8\u5f00\u59cb\u4e00\u672c\u6b63\u7ecf\u5730\u80e1\u8bf4\u4e86\uff1f\u7528 Python \u624b\u5199\u4e00\u4e2a\u6700\u5c0f RAG \u7ed9\u5b83\u201c\u9012\u8bc1\u636e\u201d"},"content":{"rendered":"<h2>\u5927\u6a21\u578b\u53c8\u5f00\u59cb\u4e00\u672c\u6b63\u7ecf\u5730\u80e1\u8bf4\u4e86&#xff1f;\u7528 Python \u624b\u5199\u4e00\u4e2a\u6700\u5c0f RAG \u7ed9\u5b83\u201c\u9012\u8bc1\u636e\u201d<\/h2>\n<p>\u4e0d\u4f9d\u8d56 LangChain&#xff0c;\u4e0d\u9700\u8981\u5411\u91cf\u6570\u636e\u5e93&#xff0c;\u4e5f\u4e0d\u7528\u7533\u8bf7 API Key\u3002\u672c\u6587\u53ea\u7528 Python \u6807\u51c6\u5e93&#xff0c;\u4ece\u96f6\u5b9e\u73b0\u6587\u672c\u5207\u5757\u3001TF-IDF\u3001\u4f59\u5f26\u76f8\u4f3c\u5ea6\u3001Top-K \u68c0\u7d22\u548c\u5e26\u8bc1\u636e\u7684\u63d0\u793a\u8bcd\u62fc\u88c5\u3002\u6211\u4eec\u4e0d\u4ec5\u8ba9\u4ee3\u7801\u8dd1\u8d77\u6765&#xff0c;\u8fd8\u8981\u770b\u6e05 RAG \u5728\u54ea\u91cc\u6709\u6548\u3001\u4f1a\u5728\u54ea\u91cc\u7ffb\u8f66&#xff0c;\u4ee5\u53ca\u600e\u6837\u4ece\u6559\u5b66\u73a9\u5177\u5347\u7ea7\u5230\u751f\u4ea7\u7cfb\u7edf\u3002<\/p>\n<h3>\u4e00\u3001\u4e8b\u6545\u53d1\u751f\u5728\u4e0b\u73ed\u524d\u4e00\u5206\u949f<\/h3>\n<p>\u5047\u8bbe\u65f6\u95f4\u662f\u5468\u4e94 17:59\u3002<\/p>\n<p>\u4f60\u95ee\u516c\u53f8\u77e5\u8bc6\u52a9\u624b&#xff1a;<\/p>\n<p>\u201c\u8bd5\u7528\u671f\u5458\u5de5\u53ef\u4ee5\u7533\u8bf7\u51e0\u5929\u8fdc\u7a0b\u529e\u516c&#xff1f;\u201d<\/p>\n<p>\u6a21\u578b\u6c89\u601d\u4e86 0.8 \u79d2&#xff0c;\u7528\u4e00\u79cd\u4eff\u4f5b\u53c2\u52a0\u8fc7\u8463\u4e8b\u4f1a\u7684\u8bed\u6c14\u56de\u7b54&#xff1a;<\/p>\n<p>\u201c\u6839\u636e\u516c\u53f8 2025 \u5e74\u65b0\u7248\u5236\u5ea6&#xff0c;\u8bd5\u7528\u671f\u5458\u5de5\u6bcf\u6708\u53ef\u7533\u8bf7 3 \u5929\u8fdc\u7a0b\u529e\u516c\u3002\u201d<\/p>\n<p>\u542c\u8d77\u6765\u903b\u8f91\u4e25\u5bc6&#xff0c;\u63aa\u8f9e\u4e13\u4e1a&#xff0c;\u751a\u81f3\u8fd8\u8d34\u5fc3\u5730\u8865\u4e86\u4e00\u53e5\u201c\u5efa\u8bae\u63d0\u524d\u5411\u76f4\u5c5e\u4e3b\u7ba1\u62a5\u5907\u201d\u3002<\/p>\n<p>\u552f\u4e00\u7684\u95ee\u9898\u662f&#xff1a;\u516c\u53f8\u6839\u672c\u6ca1\u6709\u8fd9\u6761\u5236\u5ea6\u3002<\/p>\n<p>\u8fd9\u5c31\u662f\u5927\u6a21\u578b\u6700\u8ba9\u4eba\u54ed\u7b11\u4e0d\u5f97\u7684\u80fd\u529b\u2014\u2014\u4e0d\u77e5\u9053\u7b54\u6848\u65f6&#xff0c;\u5b83\u6709\u65f6\u4e0d\u4f1a\u6c89\u9ed8&#xff0c;\u53cd\u800c\u4f1a\u52aa\u529b\u628a\u8bed\u6c14\u8c03\u6574\u5f97\u66f4\u50cf\u7b54\u6848\u3002<\/p>\n<p>RAG&#xff08;Retrieval-Augmented Generation&#xff0c;\u68c0\u7d22\u589e\u5f3a\u751f\u6210&#xff09;\u7684\u601d\u8def\u5e76\u4e0d\u795e\u79d8&#xff1a;\u5148\u522b\u8ba9\u6a21\u578b\u6025\u7740\u5f00\u53e3&#xff0c;\u5148\u53bb\u77e5\u8bc6\u5e93\u627e\u8bc1\u636e&#xff0c;\u518d\u628a\u95ee\u9898\u548c\u8bc1\u636e\u4e00\u8d77\u4ea4\u7ed9\u5b83\u3002\u50cf\u4e00\u4f4d\u9760\u8c31\u7684\u52a9\u7406&#xff0c;\u5728\u8001\u677f\u53d1\u8a00\u524d\u6084\u6084\u9012\u4e0a\u4e00\u53e0\u6807\u597d\u91cd\u70b9\u7684\u8d44\u6599\u3002<\/p>\n<p>\u4f46\u8bf7\u5148\u8bb0\u4f4f&#xff1a;<\/p>\n<p>RAG \u80fd\u964d\u4f4e\u65e0\u4f9d\u636e\u56de\u7b54\u7684\u98ce\u9669&#xff0c;\u5374\u4e0d\u80fd\u4e3a\u6a21\u578b\u9881\u53d1\u201c\u6c38\u4e0d\u80e1\u8bf4\u7ec8\u8eab\u6210\u5c31\u5956\u201d\u3002<\/p>\n<p>\u5982\u679c\u77e5\u8bc6\u5e93\u672c\u8eab\u9519\u8bef\u3001\u68c0\u7d22\u627e\u9519\u6750\u6599&#xff0c;\u6216\u8005\u6a21\u578b\u62ff\u5230\u8bc1\u636e\u540e\u4ecd\u7136\u81ea\u7531\u53d1\u6325&#xff0c;\u7b54\u6848\u7167\u6837\u53ef\u80fd\u7ffb\u8f66\u3002<\/p>\n<h3>\u4e8c\u3001RAG \u5230\u5e95\u589e\u52a0\u4e86\u4ec0\u4e48&#xff1f;<\/h3>\n<p>\u7ecf\u5178 RAG \u8bba\u6587\u5c06\u4e24\u7c7b\u201c\u8bb0\u5fc6\u201d\u7ed3\u5408\u8d77\u6765&#xff1a;<\/p>\n<ul>\n<li>\u53c2\u6570\u5316\u8bb0\u5fc6&#xff1a;\u6a21\u578b\u8bad\u7ec3\u540e\u5199\u8fdb\u53c2\u6570\u91cc\u7684\u77e5\u8bc6&#xff1b;<\/li>\n<li>\u975e\u53c2\u6570\u5316\u8bb0\u5fc6&#xff1a;\u53ef\u4ee5\u72ec\u7acb\u67e5\u8be2\u3001\u66f4\u65b0\u548c\u8ffd\u8e2a\u6765\u6e90\u7684\u5916\u90e8\u8d44\u6599\u3002<\/li>\n<\/ul>\n<p>\u666e\u901a\u95ee\u7b54\u5927\u81f4\u662f&#xff1a;<\/p>\n<p>\u95ee\u9898 \u2192 \u5927\u6a21\u578b \u2192 \u7b54\u6848<\/p>\n<p>RAG \u5219\u591a\u4e86\u4e00\u6761\u8bc1\u636e\u94fe&#xff1a;<\/p>\n<p>\u95ee\u9898 \u2192 \u68c0\u7d22\u77e5\u8bc6\u5e93 \u2192 \u9009\u51fa\u76f8\u5173\u8d44\u6599 \u2192 \u62fc\u5165\u4e0a\u4e0b\u6587 \u2192 \u5927\u6a21\u578b \u2192 \u7b54\u6848\u4e0e\u6765\u6e90<\/p>\n<p>\u8fd9\u610f\u5473\u7740\u66f4\u65b0\u516c\u53f8\u5236\u5ea6\u65f6&#xff0c;\u4e0d\u5fc5\u91cd\u65b0\u8bad\u7ec3\u6574\u4e2a\u6a21\u578b&#xff0c;\u53ea\u9700\u66f4\u65b0\u77e5\u8bc6\u5e93\u5e76\u91cd\u65b0\u5efa\u7acb\u7d22\u5f15\u3002\u6a21\u578b\u4e0d\u518d\u53ea\u51ed\u201c\u8111\u5185\u5370\u8c61\u201d\u56de\u7b54&#xff0c;\u800c\u662f\u591a\u4e86\u4e00\u6b21\u67e5\u8d44\u6599\u7684\u673a\u4f1a\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260802175650-6a6f84e2e063e.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u56fe\u4e2d\u5206\u4e3a\u4e24\u6761\u8def\u5f84\u3002<\/p>\n<h4>1. \u79bb\u7ebf\u5efa\u5e93<\/h4>\n<p>\u539f\u59cb\u6587\u6863 \u2192 \u6e05\u6d17 \u2192 \u6587\u672c\u5207\u5757 \u2192 \u5411\u91cf\u5316 \u2192 \u5efa\u7acb\u7d22\u5f15<\/p>\n<p>\u6587\u6863\u53ef\u4ee5\u6765\u81ea Markdown\u3001PDF\u3001\u7f51\u9875\u3001\u6570\u636e\u5e93\u6216\u5185\u90e8\u63a5\u53e3\u3002\u5207\u5757\u540e&#xff0c;\u6bcf\u4e2a\u6587\u672c\u5757\u9664\u4e86\u6b63\u6587&#xff0c;\u901a\u5e38\u8fd8\u5e94\u4fdd\u5b58&#xff1a;<\/p>\n<ul>\n<li>\u6587\u6863\u6807\u9898&#xff1b;<\/li>\n<li>\u6765\u6e90\u94fe\u63a5\u6216\u6587\u4ef6\u540d&#xff1b;<\/li>\n<li>\u7ae0\u8282\u4f4d\u7f6e&#xff1b;<\/li>\n<li>\u66f4\u65b0\u65f6\u95f4&#xff1b;<\/li>\n<li>\u6743\u9650\u6807\u7b7e&#xff1b;<\/li>\n<li>\u7248\u672c\u53f7\u3002<\/li>\n<\/ul>\n<h4>2. \u5728\u7ebf\u95ee\u7b54<\/h4>\n<p>\u7528\u6237\u95ee\u9898 \u2192 \u95ee\u9898\u5411\u91cf\u5316 \u2192 \u68c0\u7d22 \u2192 \u6392\u5e8f \u2192 Top-K \u2192 \u62fc\u88c5\u4e0a\u4e0b\u6587 \u2192 \u751f\u6210 \u2192 \u6821\u9a8c<\/p>\n<p>\u5f88\u591a\u6f14\u793a\u505a\u5230\u201c\u751f\u6210\u201d\u5c31\u7ed3\u675f\u4e86&#xff0c;\u751f\u4ea7\u73af\u5883\u5374\u4e0d\u80fd\u5fd8\u8bb0\u6700\u540e\u7684\u201c\u6821\u9a8c\u201d\u3002\u6bd5\u7adf\u6a21\u578b\u5199\u5b8c\u7b54\u6848\u540e&#xff0c;\u4e0d\u4f1a\u4e3b\u52a8\u4e3e\u624b\u8bf4&#xff1a;\u201c\u6211\u521a\u624d\u7b2c\u4e09\u6bb5\u5176\u5b9e\u6709\u70b9\u5fc3\u865a\u3002\u201d<\/p>\n<h3>\u4e09\u3001\u4e3a\u4ec0\u4e48\u4e0d\u76f4\u63a5\u628a\u6574\u672c PDF \u585e\u7ed9\u6a21\u578b&#xff1f;<\/h3>\n<p>\u8fd9\u662f\u4e00\u4e2a\u975e\u5e38\u81ea\u7136\u7684\u95ee\u9898&#xff1a;\u65e2\u7136\u6a21\u578b\u4e0a\u4e0b\u6587\u8d8a\u6765\u8d8a\u957f&#xff0c;\u4e3a\u4ec0\u4e48\u8fd8\u8981\u68c0\u7d22&#xff1f;<\/p>\n<p>\u539f\u56e0\u4e3b\u8981\u6709\u4e09\u4e2a&#xff1a;<\/p>\n<li>\u6210\u672c&#xff1a;\u8f93\u5165\u8d8a\u957f&#xff0c;\u5904\u7406\u65f6\u95f4\u548c\u8c03\u7528\u6210\u672c\u901a\u5e38\u8d8a\u9ad8&#xff1b;<\/li>\n<li>\u566a\u58f0&#xff1a;\u65e0\u5173\u8d44\u6599\u8d8a\u591a&#xff0c;\u5173\u952e\u8bc1\u636e\u8d8a\u5bb9\u6613\u88ab\u6df9\u6ca1&#xff1b;<\/li>\n<li>\u4f4d\u7f6e\u5f71\u54cd&#xff1a;\u7814\u7a76\u53d1\u73b0&#xff0c;\u76f8\u5173\u4fe1\u606f\u4f4d\u4e8e\u957f\u4e0a\u4e0b\u6587\u4e2d\u90e8\u65f6&#xff0c;\u4e00\u4e9b\u6a21\u578b\u7684\u8868\u73b0\u4f1a\u660e\u663e\u4e0b\u964d&#xff0c;\u8fd9\u7c7b\u73b0\u8c61\u5e38\u88ab\u79f0\u4e3a \u201cLost in the Middle\u201d\u3002<\/li>\n<p>\u6240\u4ee5\u201c\u4e0a\u4e0b\u6587\u5f88\u957f\u201d\u5e76\u4e0d\u7b49\u4e8e\u201c\u6a21\u578b\u80fd\u540c\u7b49\u8ba4\u771f\u5730\u8bfb\u5b8c\u6bcf\u4e00\u6bb5\u201d\u3002\u628a 300 \u9875\u5236\u5ea6\u5168\u90e8\u585e\u7ed9\u6a21\u578b&#xff0c;\u6709\u65f6\u5c31\u50cf\u628a\u6574\u5ea7\u56fe\u4e66\u9986\u63a8\u8fdb\u4f1a\u8bae\u5ba4&#xff0c;\u7136\u540e\u95ee\u5b83&#xff1a;\u201c\u521a\u624d\u90a3\u5f20\u8bf7\u5047\u5355\u5728\u54ea\u91cc&#xff1f;\u201d<\/p>\n<p>\u68c0\u7d22\u7684\u4ef7\u503c\u4e0d\u662f\u8ba9\u6a21\u578b\u770b\u5230\u66f4\u591a&#xff0c;\u800c\u662f\u8ba9\u5b83\u4f18\u5148\u770b\u5230\u66f4\u76f8\u5173\u3001\u66f4\u805a\u7126\u3001\u53ef\u8ffd\u8e2a\u7684\u5185\u5bb9\u3002<\/p>\n<h3>\u56db\u3001\u5148\u505a\u4e00\u4e2a\u6700\u5c0f\u77e5\u8bc6\u5e93<\/h3>\n<p>\u65b0\u5efa knowledge.txt&#xff0c;\u7528\u7a7a\u884c\u5206\u9694\u6587\u672c\u5757&#xff1a;<\/p>\n<p>RAG \u662f\u68c0\u7d22\u589e\u5f3a\u751f\u6210\u7684\u7f29\u5199\u3002\u7cfb\u7edf\u5148\u4ece\u5916\u90e8\u77e5\u8bc6\u5e93\u68c0\u7d22\u4e0e\u95ee\u9898\u76f8\u5173\u7684\u8d44\u6599&#xff0c;\u518d\u628a\u8d44\u6599\u548c\u95ee\u9898\u4e00\u8d77\u4ea4\u7ed9\u751f\u6210\u6a21\u578b\u3002\u5916\u90e8\u77e5\u8bc6\u53ef\u4ee5\u72ec\u7acb\u66f4\u65b0&#xff0c;\u5e76\u80fd\u4e3a\u56de\u7b54\u63d0\u4f9b\u53ef\u68c0\u67e5\u7684\u4f9d\u636e\u3002<\/p>\n<p>\u5927\u8bed\u8a00\u6a21\u578b\u7684\u53c2\u6570\u53ef\u4ee5\u8bb0\u5fc6\u8bad\u7ec3\u8bed\u6599\u4e2d\u7684\u77e5\u8bc6&#xff0c;\u4f46\u53c2\u6570\u4e2d\u7684\u77e5\u8bc6\u4e0d\u5bb9\u6613\u88ab\u7cbe\u786e\u66f4\u65b0&#xff0c;\u4e5f\u4e0d\u80fd\u4fdd\u8bc1\u6bcf\u6b21\u56de\u7b54\u90fd\u80fd\u7ed9\u51fa\u53ef\u9760\u6765\u6e90\u3002\u68c0\u7d22\u53ef\u4ee5\u8865\u5145\u6a21\u578b\u53c2\u6570\u4e4b\u5916\u7684\u4e0a\u4e0b\u6587&#xff0c;\u4f46\u4e0d\u80fd\u4ece\u7406\u8bba\u4e0a\u5f7b\u5e95\u6d88\u9664\u5e7b\u89c9\u3002<\/p>\n<p>TF-IDF \u4f1a\u63d0\u9ad8\u5728\u5f53\u524d\u6587\u6863\u4e2d\u9891\u7e41\u3001\u4f46\u5728\u6574\u4e2a\u6587\u6863\u96c6\u5408\u4e2d\u8f83\u5c11\u51fa\u73b0\u7684\u8bcd\u7684\u6743\u91cd\u3002\u4f59\u5f26\u76f8\u4f3c\u5ea6\u901a\u8fc7\u6bd4\u8f83\u4e24\u4e2a\u5411\u91cf\u7684\u65b9\u5411\u8861\u91cf\u76f8\u5173\u6027&#xff0c;\u5e38\u7528\u4e8e\u5411\u91cf\u7a7a\u95f4\u68c0\u7d22\u3002<\/p>\n<p>\u793a\u4f8b\u6309\u7a7a\u884c\u5207\u5757&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> re<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">split_documents<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">list<\/span><span class=\"token punctuation\">[<\/span><span class=\"token builtin\">str<\/span><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        part<span class=\"token punctuation\">.<\/span>strip<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> part <span class=\"token keyword\">in<\/span> re<span class=\"token punctuation\">.<\/span>split<span class=\"token punctuation\">(<\/span><span class=\"token string\">r&#034;\\\\n\\\\s*\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> text<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> part<span class=\"token punctuation\">.<\/span>strip<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">]<\/span><\/p>\n<p>\u771f\u5b9e\u9879\u76ee\u4e0d\u80fd\u8fd9\u6837\u201c\u4e00\u5200\u5207\u201d\u3002\u66f4\u5408\u7406\u7684\u5207\u5757\u7b56\u7565\u901a\u5e38\u8981\u5c0a\u91cd\u6807\u9898\u3001\u6bb5\u843d\u3001\u5217\u8868\u548c\u4ee3\u7801\u5757&#xff1a;<\/p>\n<ul>\n<li>\u5757\u592a\u5927&#xff1a;\u4e3b\u9898\u6df7\u6742&#xff0c;\u68c0\u7d22\u547d\u4e2d\u4e86\u534a\u7bc7\u65e0\u5173\u5185\u5bb9&#xff1b;<\/li>\n<li>\u5757\u592a\u5c0f&#xff1a;\u4e0a\u4e0b\u6587\u65ad\u88c2&#xff0c;\u7b54\u6848\u4e0a\u534a\u53e5\u5728 A \u5757&#xff0c;\u4e0b\u534a\u53e5\u5728 B \u5757&#xff1b;<\/li>\n<li>\u6ca1\u6709\u91cd\u53e0&#xff1a;\u8fb9\u754c\u5904\u7684\u4fe1\u606f\u53ef\u80fd\u88ab\u5207\u65ad&#xff1b;<\/li>\n<li>\u91cd\u53e0\u592a\u591a&#xff1a;\u7d22\u5f15\u81a8\u80c0&#xff0c;\u76f8\u4f3c\u7247\u6bb5\u4e92\u76f8\u62a2\u6392\u540d\u3002<\/li>\n<\/ul>\n<p>\u5207\u5757\u5f88\u50cf\u5207\u86cb\u7cd5&#xff1a;\u592a\u5927\u6ca1\u4eba\u5403\u5f97\u4e0b&#xff0c;\u592a\u5c0f\u6ee1\u684c\u90fd\u662f\u6e23&#xff0c;\u5207\u5f97\u521a\u597d\u624d\u663e\u5f97\u4f60\u6765\u8fc7\u9ad8\u7ea7\u9910\u5385\u3002<\/p>\n<h3>\u4e94\u3001\u4e0d\u88c5\u5206\u8bcd\u5e93&#xff0c;\u4e2d\u6587\u600e\u6837\u5411\u91cf\u5316&#xff1f;<\/h3>\n<p>\u82f1\u6587\u53ef\u4ee5\u6309\u7a7a\u683c\u548c\u5355\u8bcd\u5207\u5206&#xff0c;\u4e2d\u6587\u6ca1\u6709\u5929\u7136\u7a7a\u683c\u3002\u4e3a\u4e86\u8ba9\u793a\u4f8b\u53ea\u4f9d\u8d56\u6807\u51c6\u5e93&#xff0c;\u6211\u4eec\u7ec4\u5408\u4e09\u7c7b\u7279\u5f81&#xff1a;<\/p>\n<ul>\n<li>\u82f1\u6587\u5b57\u6bcd\u3001\u6570\u5b57\u548c\u4e0b\u5212\u7ebf\u7ec4\u6210\u7684\u5355\u8bcd&#xff1b;<\/li>\n<li>\u5355\u4e2a\u6c49\u5b57&#xff1b;<\/li>\n<li>\u8fde\u7eed\u4e2d\u6587\u4e2d\u7684\u4e8c\u5143\u5b57\u8bcd\u3002<\/li>\n<\/ul>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">tokenize<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">list<\/span><span class=\"token punctuation\">[<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    text <span class=\"token operator\">&#061;<\/span> text<span class=\"token punctuation\">.<\/span>lower<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    tokens <span class=\"token operator\">&#061;<\/span> re<span class=\"token punctuation\">.<\/span>findall<span class=\"token punctuation\">(<\/span><span class=\"token string\">r&#034;[a-z0-9_]&#043;&#034;<\/span><span class=\"token punctuation\">,<\/span> text<span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">for<\/span> block <span class=\"token keyword\">in<\/span> re<span class=\"token punctuation\">.<\/span>findall<span class=\"token punctuation\">(<\/span><span class=\"token string\">r&#034;[\\\\u4e00-\\\\u9fff]&#043;&#034;<\/span><span class=\"token punctuation\">,<\/span> text<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        tokens<span class=\"token punctuation\">.<\/span>extend<span class=\"token punctuation\">(<\/span>block<span class=\"token punctuation\">)<\/span><br \/>\n        tokens<span class=\"token punctuation\">.<\/span>extend<span class=\"token punctuation\">(<\/span><br \/>\n            block<span class=\"token punctuation\">[<\/span>i <span class=\"token punctuation\">:<\/span> i <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><br \/>\n            <span class=\"token keyword\">for<\/span> i <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>block<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> tokens<\/p>\n<p>\u201c\u68c0\u7d22\u589e\u5f3a\u751f\u6210\u201d\u4f1a\u4ea7\u751f\u5355\u5b57&#xff0c;\u4ee5\u53ca\u201c\u68c0\u7d22\u3001\u7d22\u589e\u3001\u589e\u5f3a\u3001\u5f3a\u751f\u3001\u751f\u6210\u201d\u7b49\u4e8c\u5143\u5b57\u8bcd\u3002<\/p>\n<p>\u8fd9\u4e0d\u662f\u5b8c\u6574\u7684\u4e2d\u6587\u8bed\u4e49\u7406\u89e3\u3002\u5b83\u4e0d\u77e5\u9053\u201c\u62a5\u9500\u201d\u4e0e\u201c\u8d39\u7528 reimbursement\u201d\u53ef\u80fd\u8868\u8fbe\u76f8\u8fd1\u6982\u5ff5&#xff0c;\u53ea\u80fd\u8f83\u597d\u5730\u6355\u6349\u5b57\u8bcd\u91cd\u5408\u3002\u4f46\u4f5c\u4e3a\u6559\u5b66\u68c0\u7d22\u5668&#xff0c;\u5b83\u6709\u4e09\u4e2a\u4f18\u70b9&#xff1a;\u900f\u660e\u3001\u53ef\u8fd0\u884c\u3001\u51fa\u4e86\u95ee\u9898\u5bb9\u6613\u62c6\u5f00\u770b\u3002<\/p>\n<h3>\u516d\u3001TF-IDF&#xff1a;\u8ba9\u7a00\u6709\u4f46\u5173\u952e\u7684\u8bcd\u7ad9\u5230\u524d\u6392<\/h3>\n<p>\u5982\u679c\u53ea\u6309\u51fa\u73b0\u6b21\u6570\u6392\u5e8f&#xff0c;\u201c\u7cfb\u7edf\u201d\u201c\u6a21\u578b\u201d\u201c\u53ef\u4ee5\u201d\u8fd9\u7c7b\u9ad8\u9891\u8bcd\u4f1a\u5360\u636e\u821e\u53f0\u4e2d\u592e\u3002\u5b83\u4eec\u5f88\u52e4\u594b&#xff0c;\u4f46\u533a\u5206\u6587\u6863\u7684\u80fd\u529b\u5e76\u4e0d\u5f3a\u3002<\/p>\n<p>TF-IDF \u540c\u65f6\u8003\u8651&#xff1a;<\/p>\n<ul>\n<li>TF&#xff08;Term Frequency&#xff09;&#xff1a;\u8bcd\u5728\u5f53\u524d\u6587\u6863\u4e2d\u51fa\u73b0\u5f97\u591a\u4e0d\u591a&#xff1b;<\/li>\n<li>IDF&#xff08;Inverse Document Frequency&#xff09;&#xff1a;\u8bcd\u5728\u6574\u4e2a\u77e5\u8bc6\u5e93\u4e2d\u662f\u5426\u8db3\u591f\u7a00\u6709\u3002<\/li>\n<\/ul>\n<p>\u672c\u6587\u91c7\u7528\u5e26\u5e73\u6ed1\u7684 IDF&#xff1a;<\/p>\n<p>idf(t) &#061; log((N &#043; 1) \/ (df(t) &#043; 1)) &#043; 1<\/p>\n<p>\u5176\u4e2d&#xff0c;N \u662f\u6587\u6863\u603b\u6570&#xff0c;df(t) \u662f\u5305\u542b\u8bcd t \u7684\u6587\u6863\u6570\u3002<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">_build_idf<\/span><span class=\"token punctuation\">(<\/span>tokenized_documents<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    document_count <span class=\"token operator\">&#061;<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>tokenized_documents<span class=\"token punctuation\">)<\/span><br \/>\n    document_frequency <span class=\"token operator\">&#061;<\/span> Counter<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">for<\/span> tokens <span class=\"token keyword\">in<\/span> tokenized_documents<span class=\"token punctuation\">:<\/span><br \/>\n        document_frequency<span class=\"token punctuation\">.<\/span>update<span class=\"token punctuation\">(<\/span><span class=\"token builtin\">set<\/span><span class=\"token punctuation\">(<\/span>tokens<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        term<span class=\"token punctuation\">:<\/span> math<span class=\"token punctuation\">.<\/span>log<span class=\"token punctuation\">(<\/span><br \/>\n            <span class=\"token punctuation\">(<\/span>document_count <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">\/<\/span> <span class=\"token punctuation\">(<\/span>frequency <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> term<span class=\"token punctuation\">,<\/span> frequency <span class=\"token keyword\">in<\/span> document_frequency<span class=\"token punctuation\">.<\/span>items<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8fd9\u91cc\u7684 set(tokens) \u5f88\u5173\u952e\u3002\u6587\u6863\u9891\u7387\u7edf\u8ba1\u7684\u662f\u201c\u591a\u5c11\u7bc7\u6587\u6863\u5305\u542b\u8fd9\u4e2a\u8bcd\u201d&#xff0c;\u4e0d\u662f\u8fd9\u4e2a\u8bcd\u603b\u5171\u51fa\u73b0\u4e86\u591a\u5c11\u6b21\u3002<\/p>\n<h3>\u4e03\u3001\u4f59\u5f26\u76f8\u4f3c\u5ea6&#xff1a;\u770b\u65b9\u5411&#xff0c;\u4e0d\u770b\u8c01\u5757\u5934\u5927<\/h3>\n<p>\u95ee\u9898\u548c\u6587\u6863\u88ab\u8868\u793a\u4e3a\u5411\u91cf\u540e&#xff0c;\u53ef\u4ee5\u7528\u4f59\u5f26\u76f8\u4f3c\u5ea6\u8861\u91cf\u65b9\u5411\u662f\u5426\u63a5\u8fd1&#xff1a;<\/p>\n<p>cos(q, d) &#061; (q \u00b7 d) \/ (||q|| \u00d7 ||d||)<\/p>\n<p>\u4e0b\u9762\u8fd9\u5f20\u56fe\u628a\u201c\u8bcd\u5982\u4f55\u53d8\u6210\u68c0\u7d22\u6392\u540d\u201d\u4e32\u6210\u4e86\u4e00\u6761\u5b8c\u6574\u56e0\u679c\u94fe&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260802175652-6a6f84e463363.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u5982\u679c\u95ee\u9898\u5411\u91cf\u4e0e\u67d0\u4e2a\u6587\u6863\u5411\u91cf\u65b9\u5411\u63a5\u8fd1&#xff0c;\u5206\u6570\u5c31\u66f4\u9ad8\u3002\u4f59\u5f26\u76f8\u4f3c\u5ea6\u5173\u6ce8\u7684\u662f\u5939\u89d2&#xff0c;\u800c\u4e0d\u662f\u5355\u7eaf\u6bd4\u8f83\u5411\u91cf\u957f\u5ea6&#xff0c;\u56e0\u6b64\u4e0d\u4f1a\u56e0\u4e3a\u67d0\u7bc7\u6587\u6863\u7279\u522b\u957f\u5c31\u81ea\u52a8\u5224\u5b83\u83b7\u80dc\u3002<\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;staticmethod<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">_cosine<\/span><span class=\"token punctuation\">(<\/span>left<span class=\"token punctuation\">,<\/span> right<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> left <span class=\"token keyword\">or<\/span> <span class=\"token keyword\">not<\/span> right<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token number\">0.0<\/span><\/p>\n<p>    common_terms <span class=\"token operator\">&#061;<\/span> left<span class=\"token punctuation\">.<\/span>keys<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;<\/span> right<span class=\"token punctuation\">.<\/span>keys<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    dot_product <span class=\"token operator\">&#061;<\/span> <span class=\"token builtin\">sum<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        left<span class=\"token punctuation\">[<\/span>term<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">*<\/span> right<span class=\"token punctuation\">[<\/span>term<span class=\"token punctuation\">]<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> term <span class=\"token keyword\">in<\/span> common_terms<br \/>\n    <span class=\"token punctuation\">)<\/span><br \/>\n    left_norm <span class=\"token operator\">&#061;<\/span> math<span class=\"token punctuation\">.<\/span>sqrt<span class=\"token punctuation\">(<\/span><br \/>\n        <span class=\"token builtin\">sum<\/span><span class=\"token punctuation\">(<\/span>weight <span class=\"token operator\">**<\/span> <span class=\"token number\">2<\/span> <span class=\"token keyword\">for<\/span> weight <span class=\"token keyword\">in<\/span> left<span class=\"token punctuation\">.<\/span>values<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><br \/>\n    right_norm <span class=\"token operator\">&#061;<\/span> math<span class=\"token punctuation\">.<\/span>sqrt<span class=\"token punctuation\">(<\/span><br \/>\n        <span class=\"token builtin\">sum<\/span><span class=\"token punctuation\">(<\/span>weight <span class=\"token operator\">**<\/span> <span class=\"token number\">2<\/span> <span class=\"token keyword\">for<\/span> weight <span class=\"token keyword\">in<\/span> right<span class=\"token punctuation\">.<\/span>values<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 keyword\">return<\/span> <span class=\"token punctuation\">(<\/span><br \/>\n        dot_product <span class=\"token operator\">\/<\/span> <span class=\"token punctuation\">(<\/span>left_norm <span class=\"token operator\">*<\/span> right_norm<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> left_norm <span class=\"token keyword\">and<\/span> right_norm<br \/>\n        <span class=\"token keyword\">else<\/span> <span class=\"token number\">0.0<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><\/p>\n<p>\u56fe\u4e2d\u5de6\u4e0b\u89d2\u90a3\u4efd\u6ca1\u6709\u4e0a\u699c\u3001\u8868\u60c5\u7565\u663e\u59d4\u5c48\u7684\u6587\u6863\u63d0\u9192\u6211\u4eec&#xff1a;\u4e0d\u662f\u6bcf\u4e00\u6bb5\u6587\u5b57\u90fd\u5fc5\u987b\u8fdb\u5165\u4e0a\u4e0b\u6587\u3002\u88ab\u68c0\u7d22\u5668\u6dd8\u6c70&#xff0c;\u4e0d\u4ee3\u8868\u5b83\u6ca1\u6709\u4ef7\u503c&#xff0c;\u53ea\u4ee3\u8868\u5b83\u4e0d\u8be5\u53c2\u52a0\u8fd9\u4e00\u9898\u3002<\/p>\n<h3>\u516b\u3001\u628a\u68c0\u7d22\u5668\u7ec4\u88c5\u8d77\u6765<\/h3>\n<p>\u521d\u59cb\u5316\u65f6\u8ba1\u7b97\u6240\u6709\u6587\u6863\u5411\u91cf&#xff1b;\u67e5\u8be2\u65f6\u53ea\u9700\u5411\u91cf\u5316\u95ee\u9898\u3001\u8ba1\u7b97\u5206\u6570\u5e76\u6392\u5e8f&#xff1a;<\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">TfidfRetriever<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">__init__<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> documents<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> documents<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ValueError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u77e5\u8bc6\u5e93\u4e0d\u80fd\u4e3a\u7a7a&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        self<span class=\"token punctuation\">.<\/span>documents <span class=\"token operator\">&#061;<\/span> documents<br \/>\n        self<span class=\"token punctuation\">.<\/span>doc_tokens <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n            tokenize<span class=\"token punctuation\">(<\/span>document<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">for<\/span> document <span class=\"token keyword\">in<\/span> documents<br \/>\n        <span class=\"token punctuation\">]<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>idf <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>_build_idf<span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>doc_tokens<span class=\"token punctuation\">)<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>doc_vectors <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>_vectorize<span class=\"token punctuation\">(<\/span>tokens<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">for<\/span> tokens <span class=\"token keyword\">in<\/span> self<span class=\"token punctuation\">.<\/span>doc_tokens<br \/>\n        <span class=\"token punctuation\">]<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">search<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> query<span class=\"token punctuation\">,<\/span> top_k<span class=\"token operator\">&#061;<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> top_k <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">raise<\/span> ValueError<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;top_k \u5fc5\u987b\u5927\u4e8e\u7b49\u4e8e 1&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        query_vector <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>_vectorize<span class=\"token punctuation\">(<\/span>tokenize<span class=\"token punctuation\">(<\/span>query<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        ranked <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n            SearchResult<span class=\"token punctuation\">(<\/span><br \/>\n                self<span class=\"token punctuation\">.<\/span>_cosine<span class=\"token punctuation\">(<\/span>query_vector<span class=\"token punctuation\">,<\/span> vector<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                document<span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">for<\/span> document<span class=\"token punctuation\">,<\/span> vector<br \/>\n            <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">zip<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>documents<span class=\"token punctuation\">,<\/span> self<span class=\"token punctuation\">.<\/span>doc_vectors<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">]<\/span><br \/>\n        ranked<span class=\"token punctuation\">.<\/span>sort<span class=\"token punctuation\">(<\/span><br \/>\n            key<span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">lambda<\/span> item<span class=\"token punctuation\">:<\/span> item<span class=\"token punctuation\">.<\/span>score<span class=\"token punctuation\">,<\/span><br \/>\n            reverse<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> ranked<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">:<\/span>top_k<span class=\"token punctuation\">]<\/span><\/p>\n<p>top_k \u4e0d\u662f\u201c\u8d8a\u5927\u8d8a\u4fdd\u9669\u201d\u3002<\/p>\n<ul>\n<li>\u592a\u5c0f&#xff1a;\u5173\u952e\u8bc1\u636e\u53ef\u80fd\u6f0f\u6389&#xff1b;<\/li>\n<li>\u592a\u5927&#xff1a;\u65e0\u5173\u7247\u6bb5\u6df7\u8fdb\u4e0a\u4e0b\u6587&#xff1b;<\/li>\n<li>\u5b8c\u5168\u4e0d\u8bbe\u9608\u503c&#xff1a;\u5373\u4f7f\u6240\u6709\u5206\u6570\u4e3a 0&#xff0c;\u4e5f\u4f1a\u786c\u6311\u51e0\u4e2a\u201c\u5012\u9709\u6587\u6863\u201d\u966a\u6a21\u578b\u6f14\u620f\u3002<\/li>\n<\/ul>\n<p>\u66f4\u7a33\u59a5\u7684\u505a\u6cd5\u662f\u540c\u65f6\u8bbe\u7f6e Top-K \u548c\u6700\u4f4e\u76f8\u5173\u5ea6\u9608\u503c\u3002\u6700\u9ad8\u5206\u4f4e\u4e8e\u9608\u503c\u65f6&#xff0c;\u76f4\u63a5\u627f\u8ba4\u77e5\u8bc6\u5e93\u6ca1\u6709\u8db3\u591f\u8bc1\u636e\u3002<\/p>\n<h3>\u4e5d\u3001\u8fd0\u884c&#xff1a;\u770b\u770b\u5b83\u5230\u5e95\u627e\u5230\u4e86\u8c01<\/h3>\n<p>\u5b8c\u6574\u4ee3\u7801\u89c1\u540c\u76ee\u5f55\u7684 minimal_rag.py&#xff0c;\u4ec5\u4f7f\u7528 Python \u6807\u51c6\u5e93&#xff0c;\u5efa\u8bae Python 3.10 \u6216\u66f4\u9ad8\u7248\u672c&#xff1a;<\/p>\n<p>python minimal_rag.py<\/p>\n<p>\u6d4b\u8bd5\u95ee\u9898&#xff1a;<\/p>\n<p>RAG \u4e3a\u4ec0\u4e48\u80fd\u964d\u4f4e\u5927\u6a21\u578b\u56de\u7b54\u4e2d\u7684\u5e7b\u89c9\u98ce\u9669&#xff1f;<\/p>\n<p>\u672c\u5730\u5b9e\u6d4b\u5f97\u5230&#xff1a;<\/p>\n<p>1. score&#061;0.309 | \u5927\u8bed\u8a00\u6a21\u578b\u7684\u53c2\u6570\u53ef\u4ee5\u8bb0\u5fc6\u8bad\u7ec3\u8bed\u6599\u4e2d\u7684\u77e5\u8bc6\u2026\u2026<br \/>\n2. score&#061;0.163 | RAG \u662f\u68c0\u7d22\u589e\u5f3a\u751f\u6210\u7684\u7f29\u5199\u2026\u2026<\/p>\n<p>\u6392\u540d\u7b26\u5408\u9884\u671f&#xff1a;\u7b2c\u4e00\u6bb5\u76f4\u63a5\u8ba8\u8bba\u53c2\u6570\u77e5\u8bc6\u4e0e\u5e7b\u89c9&#xff0c;\u7b2c\u4e8c\u6bb5\u89e3\u91ca RAG \u7684\u57fa\u672c\u5de5\u4f5c\u65b9\u5f0f\u3002<\/p>\n<p>\u8fd8\u53ef\u4ee5\u6d4b\u8bd5&#xff1a;<\/p>\n<p>retriever<span class=\"token punctuation\">.<\/span>search<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6587\u672c\u5207\u5757\u592a\u5927\u4f1a\u6709\u4ec0\u4e48\u95ee\u9898&#xff1f;&#034;<\/span><span class=\"token punctuation\">,<\/span> top_k<span class=\"token operator\">&#061;<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><br \/>\nretriever<span class=\"token punctuation\">.<\/span>search<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u4f59\u5f26\u76f8\u4f3c\u5ea6\u6709\u4ec0\u4e48\u4f5c\u7528&#xff1f;&#034;<\/span><span class=\"token punctuation\">,<\/span> top_k<span class=\"token operator\">&#061;<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><br \/>\nretriever<span class=\"token punctuation\">.<\/span>search<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5982\u4f55\u5728\u706b\u661f\u90e8\u7f72\u6570\u636e\u5e93&#xff1f;&#034;<\/span><span class=\"token punctuation\">,<\/span> top_k<span class=\"token operator\">&#061;<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u7b2c\u4e09\u4e2a\u95ee\u9898\u6545\u610f\u8d85\u51fa\u77e5\u8bc6\u5e93\u8303\u56f4\u3002\u5982\u679c\u7cfb\u7edf\u4ecd\u7136\u81ea\u4fe1\u5730\u7ed9\u51fa\u201c\u706b\u661f\u6570\u636e\u5e93\u90e8\u7f72\u6700\u4f73\u5b9e\u8df5\u201d&#xff0c;\u90a3\u4e0d\u662f\u63a2\u7d22\u7cbe\u795e&#xff0c;\u662f\u62d2\u7b54\u673a\u5236\u8fd8\u6ca1\u4e0a\u73ed\u3002<\/p>\n<h3>\u5341\u3001\u68c0\u7d22\u7ed3\u679c\u600e\u6837\u53d8\u6210\u201c\u8bc1\u636e\u201d&#xff1f;<\/h3>\n<p>\u68c0\u7d22\u53ea\u89e3\u51b3\u201c\u627e\u4ec0\u4e48\u201d&#xff0c;\u589e\u5f3a\u9636\u6bb5\u8fd8\u8981\u89e3\u51b3\u201c\u600e\u6837\u4ea4\u7ed9\u6a21\u578b\u201d\u3002<\/p>\n<p>\u4e00\u4e2a\u6bd4\u8f83\u660e\u786e\u7684\u63d0\u793a\u8bcd\u5e94\u5305\u542b&#xff1a;<\/p>\n<li>\u95ee\u9898&#xff1b;<\/li>\n<li>\u5e26\u7f16\u53f7\u7684\u8d44\u6599&#xff1b;<\/li>\n<li>\u53ea\u4f9d\u636e\u8d44\u6599\u56de\u7b54\u7684\u7ea6\u675f&#xff1b;<\/li>\n<li>\u8bc1\u636e\u4e0d\u8db3\u65f6\u7684\u62d2\u7b54\u8981\u6c42&#xff1b;<\/li>\n<li>\u5f15\u7528\u8d44\u6599\u7f16\u53f7\u7684\u8981\u6c42\u3002<\/li>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">build_prompt<\/span><span class=\"token punctuation\">(<\/span>query<span class=\"token punctuation\">,<\/span> results<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    context <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\\\\n\\\\n&#034;<\/span><span class=\"token punctuation\">.<\/span>join<span class=\"token punctuation\">(<\/span><br \/>\n        <span class=\"token string-interpolation\"><span class=\"token string\">f&#034;[\u8d44\u6599 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>index<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#xff5c;\u76f8\u5173\u5ea6 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>result<span class=\"token punctuation\">.<\/span>score<span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.3f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">]\\\\n&#034;<\/span><\/span><br \/>\n        <span class=\"token string-interpolation\"><span class=\"token string\">f&#034;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>result<span class=\"token punctuation\">.<\/span>text<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><br \/>\n        <span class=\"token keyword\">for<\/span> index<span class=\"token punctuation\">,<\/span> result <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">enumerate<\/span><span class=\"token punctuation\">(<\/span>results<span class=\"token punctuation\">,<\/span> start<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#034;&#034;\u4f60\u662f\u4e00\u540d\u4e25\u8c28\u7684\u6280\u672f\u52a9\u624b\u3002<br \/>\n\u8bf7\u4ec5\u6839\u636e\u7ed9\u5b9a\u8d44\u6599\u56de\u7b54\u95ee\u9898\u3002<br \/>\n\u5982\u679c\u8d44\u6599\u4e0d\u8db3&#xff0c;\u8bf7\u660e\u786e\u56de\u7b54\u201c\u73b0\u6709\u8d44\u6599\u4e0d\u8db3\u201d&#xff0c;\u4e0d\u8981\u731c\u6d4b\u3002<br \/>\n\u56de\u7b54\u672b\u5c3e\u8bf7\u6807\u51fa\u4f7f\u7528\u4e86\u54ea\u4e9b\u8d44\u6599\u7f16\u53f7\u3002<\/p>\n<p>\u95ee\u9898&#xff1a;<br \/>\n<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>query<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"><\/p>\n<p>\u8d44\u6599&#xff1a;<br \/>\n<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>context<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"><br \/>\n&#034;&#034;&#034;<\/span><\/span><\/p>\n<p>\u672c\u6587\u6ca1\u6709\u8c03\u7528\u5728\u7ebf\u5927\u6a21\u578b&#xff0c;\u800c\u662f\u8f93\u51fa\u6700\u7ec8\u63d0\u793a\u8bcd\u3002\u8fd9\u662f\u523b\u610f\u8bbe\u8ba1\u7684\u8fb9\u754c&#xff1a;\u6211\u4eec\u5df2\u7ecf\u5b8c\u6574\u5b9e\u73b0 Retrieval \u548c Augmentation&#xff0c;\u5e76\u4e3a Generation \u7559\u51fa\u63a5\u53e3&#xff0c;\u4f46\u4e0d\u4f1a\u865a\u6784\u67d0\u4e2a\u6a21\u578b\u7684\u8fd0\u884c\u7ed3\u679c\u3002<\/p>\n<h3>\u5341\u4e00\u3001RAG \u6700\u5e38\u89c1\u7684\u56db\u79cd\u7ffb\u8f66\u59ff\u52bf<\/h3>\n<h4>1. \u77e5\u8bc6\u5e93\u6ca1\u6709\u7b54\u6848<\/h4>\n<p>\u68c0\u7d22\u5668\u518d\u52aa\u529b&#xff0c;\u4e5f\u4e0d\u80fd\u4ece\u5458\u5de5\u624b\u518c\u91cc\u627e\u51fa\u91cf\u5b50\u529b\u5b66\u7b54\u6848\u3002\u6b64\u65f6\u6b63\u786e\u884c\u4e3a\u662f\u62d2\u7b54\u6216\u5207\u6362\u77e5\u8bc6\u6e90\u3002<\/p>\n<h4>2. \u627e\u5230\u4e86\u201c\u957f\u5f97\u50cf\u201d\u7684\u9519\u8bef\u8d44\u6599<\/h4>\n<p>TF-IDF \u64c5\u957f\u5b57\u8bcd\u5339\u914d&#xff0c;\u5374\u4e0d\u771f\u6b63\u7406\u89e3\u8bed\u4e49\u3002\u201c\u82f9\u679c\u9000\u6b3e\u89c4\u5219\u201d\u53ef\u80fd\u540c\u65f6\u547d\u4e2d\u6c34\u679c\u5546\u57ce\u548c\u624b\u673a\u552e\u540e\u3002\u5143\u6570\u636e\u8fc7\u6ee4\u3001\u8bed\u4e49\u5411\u91cf\u548c\u91cd\u6392\u5e8f\u90fd\u80fd\u7f13\u89e3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<h4>3. \u8bc1\u636e\u592a\u591a&#xff0c;\u6a21\u578b\u5728\u4e2d\u95f4\u8ff7\u8def<\/h4>\n<p>\u628a\u5927\u91cf\u6587\u672c\u585e\u5165\u4e0a\u4e0b\u6587\u4e0d\u4e00\u5b9a\u66f4\u597d\u3002\u201cLost in the Middle\u201d\u7814\u7a76\u8868\u660e&#xff0c;\u76f8\u5173\u4fe1\u606f\u5728\u957f\u4e0a\u4e0b\u6587\u4e2d\u7684\u4f4d\u7f6e\u4f1a\u5f71\u54cd\u4e00\u4e9b\u6a21\u578b\u7684\u8868\u73b0\u3002\u68c0\u7d22\u7ed3\u679c\u9700\u8981\u53bb\u91cd\u3001\u538b\u7f29\u548c\u6392\u5e8f&#xff0c;\u800c\u4e0d\u662f\u628a Top-100 \u5f53\u4f5c\u8bda\u610f\u793c\u5305\u3002<\/p>\n<h4>4. \u56de\u7b54\u542c\u8bdd&#xff0c;\u4f46\u8bc1\u636e\u5df2\u7ecf\u8fc7\u671f<\/h4>\n<p>\u68c0\u7d22\u7ed3\u679c\u5fe0\u5b9e\u4e0d\u7b49\u4e8e\u4e8b\u5b9e\u6700\u65b0\u3002\u77e5\u8bc6\u5e93\u9700\u8981\u7248\u672c\u3001\u66f4\u65b0\u65f6\u95f4\u3001\u5931\u6548\u673a\u5236\u548c\u6765\u6e90\u8ffd\u8e2a\u3002\u5426\u5219\u6a21\u578b\u53ef\u80fd\u975e\u5e38\u5fe0\u8bda\u5730\u5f15\u7528\u4e00\u4efd\u4e09\u5e74\u524d\u7684\u9519\u8bef\u5236\u5ea6\u3002<\/p>\n<h3>\u5341\u4e8c\u3001\u4ece\u6559\u5b66\u73a9\u5177\u5347\u7ea7\u5230\u751f\u4ea7\u7ea7 RAG<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260802175653-6a6f84e59cc50.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u672c\u6587\u7684\u5c0f\u7a0b\u5e8f\u662f\u4e00\u53f0\u900f\u660e\u7684\u201c\u6559\u5b66\u53d1\u52a8\u673a\u201d\u3002\u8981\u8fdb\u5165\u751f\u4ea7\u73af\u5883&#xff0c;\u53ef\u4ee5\u9010\u6b65\u66ff\u6362\u7ec4\u4ef6&#xff1a;<\/p>\n<table>\n<tr>\u6559\u5b66\u7248\u672c\u751f\u4ea7\u73af\u5883\u5e38\u89c1\u5347\u7ea7\u89e3\u51b3\u7684\u95ee\u9898<\/tr>\n<tbody>\n<tr>\n<td>\u7a7a\u884c\u5207\u5757<\/td>\n<td>\u7ed3\u6784\u5316\u89e3\u6790\u3001\u6ed1\u52a8\u7a97\u53e3\u3001\u8bed\u4e49\u5207\u5757<\/td>\n<td>\u4e0a\u4e0b\u6587\u65ad\u88c2<\/td>\n<\/tr>\n<tr>\n<td>TF-IDF<\/td>\n<td>Embedding \u8bed\u4e49\u68c0\u7d22<\/td>\n<td>\u540c\u4e49\u8868\u8fbe\u5339\u914d<\/td>\n<\/tr>\n<tr>\n<td>\u5355\u8def\u68c0\u7d22<\/td>\n<td>BM25 &#043; \u5411\u91cf\u7684\u6df7\u5408\u68c0\u7d22<\/td>\n<td>\u517c\u987e\u5173\u952e\u8bcd\u4e0e\u8bed\u4e49<\/td>\n<\/tr>\n<tr>\n<td>\u76f4\u63a5 Top-K<\/td>\n<td>Cross-Encoder \u91cd\u6392\u5e8f<\/td>\n<td>\u63d0\u9ad8\u524d\u51e0\u540d\u7cbe\u5ea6<\/td>\n<\/tr>\n<tr>\n<td>\u65e0\u8fc7\u6ee4<\/td>\n<td>\u5143\u6570\u636e\u3001\u65f6\u95f4\u548c\u6743\u9650\u8fc7\u6ee4<\/td>\n<td>\u4e32\u5e93\u4e0e\u8d8a\u6743<\/td>\n<\/tr>\n<tr>\n<td>\u56fa\u5b9a\u63d0\u793a\u8bcd<\/td>\n<td>\u5f15\u7528\u7ea6\u675f\u3001\u62d2\u7b54\u4e0e\u9632\u6ce8\u5165\u7b56\u7565<\/td>\n<td>\u51cf\u5c11\u65e0\u4f9d\u636e\u751f\u6210<\/td>\n<\/tr>\n<tr>\n<td>\u770b\u8d77\u6765\u80fd\u7528<\/td>\n<td>\u79bb\u7ebf\u8bc4\u6d4b\u3001\u7ebf\u4e0a\u76d1\u63a7\u4e0e\u4eba\u5de5\u62bd\u68c0<\/td>\n<td>\u9632\u6b62\u201c\u51ed\u611f\u89c9\u4f18\u5316\u201d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Sentence-BERT \u7b49\u5de5\u4f5c\u5c55\u793a\u4e86\u5982\u4f55\u5f97\u5230\u9002\u5408\u76f8\u4f3c\u5ea6\u6bd4\u8f83\u7684\u53e5\u5b50\u5411\u91cf\u3002\u5b9e\u9645\u7cfb\u7edf\u4e2d&#xff0c;\u5411\u91cf\u68c0\u7d22\u9002\u5408\u5904\u7406\u8bed\u4e49\u76f8\u8fd1\u4f46\u5b57\u9762\u4e0d\u540c\u7684\u8868\u8fbe&#xff1b;\u5173\u952e\u8bcd\u68c0\u7d22\u5219\u64c5\u957f\u578b\u53f7\u3001\u9519\u8bef\u7801\u3001\u4eba\u540d\u548c\u7cbe\u786e\u672f\u8bed\u3002\u4e24\u8005\u6df7\u5408&#xff0c;\u5f80\u5f80\u6bd4\u201c\u9009\u8fb9\u7ad9\u961f\u201d\u66f4\u5b9e\u7528\u3002<\/p>\n<p>\u91cd\u6392\u5e8f\u5668\u53ef\u4ee5\u5bf9\u521d\u6b65\u53ec\u56de\u7684\u5019\u9009\u9010\u4e2a\u7cbe\u6392\u3002\u901a\u4fd7\u5730\u8bf4&#xff1a;\u7b2c\u4e00\u8f6e\u50cf\u6d77\u9009&#xff0c;\u7b2c\u4e8c\u8f6e\u624d\u662f\u8bc4\u59d4\u770b\u56de\u653e\u3002\u8fd9\u6837\u4e0d\u5fc5\u5bf9\u6574\u4e2a\u77e5\u8bc6\u5e93\u505a\u6602\u8d35\u7684\u6df1\u5ea6\u6bd4\u8f83\u3002<\/p>\n<h3>\u5341\u4e09\u3001\u522b\u53ea\u6d4b\u6700\u7ec8\u7b54\u6848&#xff1a;RAG \u662f\u4e00\u6761\u6d41\u6c34\u7ebf<\/h3>\n<p>RAG \u51fa\u9519\u65f6\u81f3\u5c11\u8981\u533a\u5206\u4e09\u4ef6\u4e8b&#xff1a;<\/p>\n<li>Context Relevance&#xff1a;\u627e\u56de\u7684\u8d44\u6599\u4e0e\u95ee\u9898\u76f8\u5173\u5417&#xff1f;<\/li>\n<li>Faithfulness&#xff1a;\u56de\u7b54\u662f\u5426\u5fe0\u4e8e\u7ed9\u5b9a\u8d44\u6599&#xff1f;<\/li>\n<li>Answer Relevance&#xff1a;\u56de\u7b54\u662f\u5426\u771f\u6b63\u89e3\u51b3\u4e86\u7528\u6237\u7684\u95ee\u9898&#xff1f;<\/li>\n<p>\u53ef\u4ee5\u6309\u8fd9\u5f20\u51b3\u7b56\u56fe\u5b9a\u4f4d\u6545\u969c&#xff0c;\u800c\u4e0d\u662f\u4e00\u51fa\u9519\u5c31\u76f2\u76ee\u66f4\u6362\u5927\u6a21\u578b&#xff1a;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260802175655-6a6f84e70256f.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>RAGAS \u7b49\u7814\u7a76\u578b\u8bc4\u6d4b\u6846\u67b6\u6b63\u662f\u56f4\u7ed5\u68c0\u7d22\u4e0a\u4e0b\u6587\u3001\u56de\u7b54\u5fe0\u5b9e\u5ea6\u548c\u56de\u7b54\u8d28\u91cf\u7b49\u4e0d\u540c\u7ef4\u5ea6\u5c55\u5f00\u3002\u539f\u56e0\u5f88\u7b80\u5355&#xff1a;<\/p>\n<p>\u6ca1\u627e\u5bf9\u8d44\u6599&#xff0c;\u662f\u68c0\u7d22\u95ee\u9898&#xff1b;<br \/>\n\u8d44\u6599\u5bf9\u4f46\u56de\u7b54\u7f16\u9519&#xff0c;\u662f\u751f\u6210\u95ee\u9898&#xff1b;<br \/>\n\u7b54\u6848\u6b63\u786e\u5374\u7b54\u975e\u6240\u95ee&#xff0c;\u662f\u4ea4\u4e92\u95ee\u9898\u3002<\/p>\n<p>\u53ea\u770b\u6700\u7ec8\u4e00\u53e5\u201c\u597d\u50cf\u633a\u901a\u987a\u201d&#xff0c;\u5c31\u50cf\u9a8c\u6536\u4e00\u8f86\u8f66\u65f6\u53ea\u68c0\u67e5\u5587\u53ed\u54cd\u4e0d\u54cd\u3002<\/p>\n<p>\u4e00\u4e2a\u6700\u5c0f\u8bc4\u6d4b\u96c6\u81f3\u5c11\u5e94\u5305\u542b&#xff1a;<\/p>\n<ul>\n<li>20&#xff5e;50 \u4e2a\u771f\u5b9e\u4e1a\u52a1\u95ee\u9898&#xff1b;<\/li>\n<li>\u6bcf\u4e2a\u95ee\u9898\u5bf9\u5e94\u7684\u6b63\u786e\u8bc1\u636e&#xff1b;<\/li>\n<li>\u5e94\u8be5\u62d2\u7b54\u7684\u95ee\u9898&#xff1b;<\/li>\n<li>\u76f8\u4f3c\u4f46\u5bb9\u6613\u6df7\u6dc6\u7684\u95ee\u9898&#xff1b;<\/li>\n<li>\u65e7\u7248\u672c\u4e0e\u65b0\u7248\u672c\u51b2\u7a81\u7684\u95ee\u9898\u3002<\/li>\n<\/ul>\n<h3>\u5341\u56db\u3001\u603b\u7ed3&#xff1a;\u5148\u7ed9\u8bc1\u636e&#xff0c;\u518d\u8ba9\u6a21\u578b\u5f00\u53e3<\/h3>\n<p>\u624b\u5199\u8fd9\u4e2a\u6700\u5c0f\u7248\u672c\u540e&#xff0c;RAG \u4e0d\u518d\u662f\u4e00\u4e32\u6846\u67b6\u540d&#xff0c;\u800c\u662f\u4e00\u6761\u53ef\u4ee5\u9010\u6bb5\u68c0\u67e5\u7684\u94fe\u8def&#xff1a;<\/p>\n<p>\u6587\u6863\u5207\u5757<br \/>\n  \u2193<br \/>\nTF-IDF \u5411\u91cf\u5316<br \/>\n  \u2193<br \/>\n\u4f59\u5f26\u76f8\u4f3c\u5ea6\u6392\u5e8f<br \/>\n  \u2193<br \/>\nTop-K \u4e0e\u9608\u503c\u8fc7\u6ee4<br \/>\n  \u2193<br \/>\n\u5e26\u7f16\u53f7\u8bc1\u636e\u7684\u63d0\u793a\u8bcd<br \/>\n  \u2193<br \/>\n\u751f\u6210\u3001\u5f15\u7528\u4e0e\u6821\u9a8c<\/p>\n<p>\u6846\u67b6\u80fd\u51cf\u5c11\u5de5\u7a0b\u4ee3\u7801&#xff0c;\u5374\u4e0d\u80fd\u66ff\u4ee3\u5bf9\u94fe\u8def\u7684\u7406\u89e3\u3002\u4ee5\u540e\u4f7f\u7528 LangChain\u3001LlamaIndex\u3001Embedding \u6a21\u578b\u6216\u5411\u91cf\u6570\u636e\u5e93\u65f6&#xff0c;\u4f60\u53ef\u4ee5\u660e\u786e\u77e5\u9053\u6bcf\u4e2a\u7ec4\u4ef6\u66ff\u6362\u4e86\u4ec0\u4e48&#xff0c;\u4e5f\u80fd\u5728\u7b54\u6848\u51fa\u9519\u65f6\u5148\u95ee\u4e00\u53e5&#xff1a;<\/p>\n<p>\u201c\u662f\u4fa6\u63a2\u627e\u9519\u4e86\u8bc1\u636e&#xff0c;\u8fd8\u662f\u53d1\u8a00\u4eba\u62ff\u5bf9\u4e86\u6750\u6599\u5374\u4e34\u573a\u53d1\u6325&#xff1f;\u201d<\/p>\n<p>\u8fd9\u6bd4\u628a\u6e29\u5ea6\u53c2\u6570\u4ece 0.7 \u8c03\u5230 0.6&#xff0c;\u7136\u540e\u8654\u8bda\u5730\u5237\u65b0\u9875\u9762&#xff0c;\u8981\u53ef\u9760\u5f97\u591a\u3002<\/p>\n<hr \/>\n<h3>\u53c2\u8003\u8d44\u6599<\/h3>\n<li>Lewis \u7b49&#xff0c;\u300aRetrieval-Augmented Generation for Knowledge-Intensive NLP Tasks\u300b&#xff0c;NeurIPS 2020&#xff1a;https:\/\/papers.neurips.cc\/paper_files\/paper\/2020\/hash\/6b493230205f780e1bc26945df7481e5-Abstract.html<\/li>\n<li>Manning\u3001Raghavan\u3001Sch\u00fctze&#xff0c;\u300aIntroduction to Information Retrieval\u300b&#xff1a;https:\/\/nlp.stanford.edu\/IR-book\/<\/li>\n<li>Stanford IR Book&#xff0c;Term frequency and weighting&#xff1a;https:\/\/nlp.stanford.edu\/IR-book\/html\/htmledition\/term-frequency-and-weighting-1.html<\/li>\n<li>Reimers\u3001Gurevych&#xff0c;\u300aSentence-BERT: Sentence Embeddings using Siamese BERT-Networks\u300b&#xff1a;https:\/\/aclanthology.org\/D19-1410\/<\/li>\n<li>Liu \u7b49&#xff0c;\u300aLost in the Middle: How Language Models Use Long Contexts\u300b&#xff1a;https:\/\/aclanthology.org\/2024.tacl-1.9\/<\/li>\n<li>Es \u7b49&#xff0c;\u300aRAGAs: Automated Evaluation of Retrieval Augmented Generation\u300b&#xff1a;https:\/\/aclanthology.org\/2024.eacl-demo.16\/<\/li>\n<p>\u8bf4\u660e&#xff1a;\u672c\u6587\u4ee3\u7801\u4e0e\u914d\u56fe\u5747\u4e3a\u539f\u521b\u3002\u793a\u4f8b\u7528\u4e8e\u89e3\u91ca\u68c0\u7d22\u4e0e\u589e\u5f3a\u539f\u7406&#xff0c;\u4e0d\u4ee3\u8868\u751f\u4ea7\u7ea7\u7cfb\u7edf\u7684\u6027\u80fd&#xff0c;\u4e5f\u4e0d\u58f0\u79f0 RAG \u80fd\u5f7b\u5e95\u6d88\u9664\u6a21\u578b\u5e7b\u89c9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5927\u6a21\u578b\u53c8\u5f00\u59cb\u4e00\u672c\u6b63\u7ecf\u5730\u80e1\u8bf4\u4e86&#xff1f;\u7528 Python \u624b\u5199\u4e00\u4e2a\u6700\u5c0f RAG \u7ed9\u5b83\u201c\u9012\u8bc1\u636e\u201d \u4e0d\u4f9d\u8d56 LangChain&#xff0c;\u4e0d\u9700\u8981\u5411\u91cf\u6570\u636e\u5e93&#xff0c;\u4e5f\u4e0d\u7528\u7533\u8bf7 API Key\u3002\u672c\u6587\u53ea\u7528 Python \u6807\u51c6\u5e93&#xff0c;\u4ece\u96f6\u5b9e\u73b0\u6587\u672c\u5207\u5757\u3001TF-IDF\u3001\u4f59\u5f26\u76f8\u4f3c\u5ea6\u3001Top-K 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