{"id":118776,"date":"2026-10-28T05:18:31","date_gmt":"2026-10-27T21:18:31","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/118776.html"},"modified":"2026-10-28T05:18:31","modified_gmt":"2026-10-27T21:18:31","slug":"embeddinggemma-2-%e8%83%bd%e8%bf%9b%e6%b5%8f%e8%a7%88%e5%99%a8%e6%a3%80%e7%b4%a2%e5%90%97%ef%bc%9a%e5%85%88%e9%aa%8c%e8%af%81%e6%a8%a1%e5%9e%8b%e9%93%be%e8%b7%af","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/118776.html","title":{"rendered":"EmbeddingGemma 2 \u80fd\u8fdb\u6d4f\u89c8\u5668\u68c0\u7d22\u5417\uff1a\u5148\u9a8c\u8bc1\u6a21\u578b\u94fe\u8def"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261027211828-6ae115245e763.png\" alt=\"\u56fe\u7247\u5230\u6d4f\u89c8\u5668\u68c0\u7d22\u7684\u56db\u9053\u63a5\u53e3\" 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tokenization \u90fd\u53ef\u80fd\u6539\u53d8\u7ed3\u679c\u3002\u7b2c\u4e09\u6b65\u8bb0\u5f55\u8f6c\u6362\u5de5\u5177\u3001\u683c\u5f0f\u548c\u4e0d\u652f\u6301\u7684\u7b97\u5b50\u3002\u7b2c\u56db\u6b65\u7528\u76ee\u6807\u8fd0\u884c\u65f6\u52a0\u8f7d&#xff0c;\u6bd4\u8f83\u6d4f\u89c8\u5668\u8f93\u51fa\u4e0e\u53c2\u8003\u8f93\u51fa&#xff0c;\u518d\u6d4b\u68c0\u7d22\u3002<\/p>\n<p>LiteRT.js \u5b98\u65b9\u6587\u7ae0\u5c55\u793a\u4e86 Web \u63a8\u7406\u8def\u7ebf&#xff1b;10 \u6708 19 \u65e5 Tensor API \u6587\u7ae0\u4ecb\u7ecd\u4e86\u66f4\u5e95\u5c42\u7684\u539f\u751f\u56fe\u6784\u5efa\u3002\u4e24\u8005\u4e0d\u80fd\u66ff\u4ee3\u201c\u8fd9\u4e00\u4e2a\u6a21\u578b\u3001\u8fd9\u4e00\u4e2a\u8f6c\u6362\u7248\u672c\u3001\u8fd9\u7ec4\u6d4f\u89c8\u5668\u201d\u4e4b\u95f4\u7684\u517c\u5bb9\u6027\u8bc1\u636e\u3002\u82e5\u67d0\u4e00\u6b65\u5931\u8d25&#xff0c;\u5c31\u6807\u8bb0\u5931\u8d25&#xff0c;\u4e0d\u80fd\u6362\u6a21\u62df\u5411\u91cf\u628a\u6d41\u7a0b\u63a5\u8d77\u6765\u540e\u4ecd\u79f0\u7aef\u4fa7\u6a21\u578b\u8dd1\u901a\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261027211829-6ae115255bffa.png\" alt=\"\u56fe\u7247\u3001\u5411\u91cf\u548c\u68c0\u7d22\u7684\u8bc1\u636e\u94fe\" \/><\/p>\n<h3>\u5148\u8ba9\u68c0\u7d22\u6570\u5b66\u62d2\u7edd\u5047\u8f93\u5165<\/h3>\n<p>\u8fd9\u4e2a\u6700\u5c0f\u4f8b\u5b50\u53ea\u68c0\u67e5\u4f59\u5f26\u76f8\u4f3c\u5ea6\u7684\u8f93\u5165\u7ea6\u675f\u4e0e\u53ec\u56de\u6307\u6807&#xff0c;\u4e0d\u8fd0\u884c\u4efb\u4f55\u6a21\u578b\u3002\u4fdd\u5b58\u4e3a retrieval-math.mjs&#xff0c;\u6267\u884c node retrieval-math.mjs&#xff1a;<\/p>\n<p>import assert from &#034;node:assert\/strict&#034;;<\/p>\n<p>function cosine(a, b) {<br \/>\n  if (!a.length || a.length !&#061;&#061; b.length) throw new Error(&#034;dimension mismatch&#034;);<br \/>\n  let dot &#061; 0, aa &#061; 0, bb &#061; 0;<br \/>\n  for (let i &#061; 0; i &lt; a.length; i&#043;&#043;) {<br \/>\n    if (!Number.isFinite(a[i]) || !Number.isFinite(b[i]))<br \/>\n      throw new Error(&#034;non-finite embedding&#034;);<br \/>\n    dot &#043;&#061; a[i] * b[i]; aa &#043;&#061; a[i] ** 2; bb &#043;&#061; b[i] ** 2;<br \/>\n  }<br \/>\n  if (!Number.isFinite(dot) || !Number.isFinite(aa) || !Number.isFinite(bb) || aa &#061;&#061;&#061; 0 || bb &#061;&#061;&#061; 0)<br \/>\n    throw new Error(&#034;invalid norm&#034;);<br \/>\n  return dot \/ Math.sqrt(aa * bb);<br \/>\n}<br \/>\nfunction recallAtK(rankedIds, relevantIds, k) {<br \/>\n  if (!Number.isSafeInteger(k) || k &lt; 1) throw new Error(&#034;invalid k&#034;);<br \/>\n  const truth &#061; new Set(relevantIds);<br \/>\n  if (!truth.size || new Set(rankedIds).size !&#061;&#061; rankedIds.length)<br \/>\n    throw new Error(&#034;non-empty truth and unique results required&#034;);<br \/>\n  return rankedIds.slice(0, k).filter(id &#061;&gt; truth.has(id)).length \/ truth.size;<br \/>\n}<br \/>\nassert.equal(cosine([1, 0], [0, 1]), 0);<br \/>\nassert.equal(cosine([1, 0], [1, 0]), 1);<br \/>\nassert.throws(() &#061;&gt; cosine([0, 0], [1, 0]));<br \/>\nassert.throws(() &#061;&gt; cosine([1], [1, 2]));<br \/>\nassert.equal(recallAtK([&#034;b&#034;, &#034;c&#034;, &#034;a&#034;], [&#034;a&#034;, &#034;b&#034;], 2), 0.5);<br \/>\nassert.throws(() &#061;&gt; recallAtK([&#034;a&#034;, &#034;a&#034;], [&#034;a&#034;], 1));<br \/>\n\/\/ \u53cd\u4f8b&#xff1a;\u82e5\u7f16\u7801\u5668\u6c38\u8fdc\u8f93\u51fa\u540c\u4e00\u5411\u91cf&#xff0c;\u6240\u6709\u5019\u9009\u5f97\u5206\u76f8\u540c\u3002<br \/>\nassert.equal(cosine([1, 0], [1, 0]), cosine([1, 0], [1, 0]));<br \/>\nconsole.log(&#034;retrieval math passed; embeddings are hand-written fixtures&#034;);<\/p>\n<p>\u6700\u540e\u4e00\u6761\u65ad\u8a00\u523b\u610f\u5c55\u793a\u9000\u5316\u7f16\u7801\u5668\u3002\u771f\u5b9e\u9a8c\u8bc1\u81f3\u5c11\u9700\u8981\u591a\u5f20\u4e0d\u540c\u6388\u6743\u56fe\u7247\u4e0e\u591a\u6761\u67e5\u8be2&#xff0c;\u786e\u8ba4\u8f93\u51fa\u4e0d\u662f\u5e38\u91cf\u3001\u96f6\u503c\u6216\u975e\u6709\u9650\u503c&#xff1b;\u201c\u5411\u91cf\u4e0d\u540c\u201d\u4e5f\u53ea\u662f\u57fa\u672c\u68c0\u67e5&#xff0c;\u4ecd\u9700\u6807\u6ce8\u76f8\u5173\u6027\u6765\u68c0\u9a8c\u8d28\u91cf\u3002<\/p>\n<p>\u6761\u7801\u8bc6\u522b\u4e0e\u89c6\u89c9\u76f8\u4f3c\u68c0\u7d22\u4e5f\u5e94\u5206\u5f00\u3002\u6761\u7801\u89e3\u7801\u5f97\u5230\u4e00\u4e2a\u6807\u8bc6\u7b26&#xff0c;\u901a\u5e38\u53ef\u76f4\u63a5\u67e5\u5546\u54c1\u5e93&#xff1b;\u89c6\u89c9\u68c0\u7d22\u7ed9\u76f8\u4f3c\u5019\u9009&#xff0c;\u53ef\u80fd\u628a\u5916\u89c2\u76f8\u8fd1\u4f46\u578b\u53f7\u4e0d\u540c\u7684\u5546\u54c1\u6392\u5728\u524d\u9762\u3002\u4e0d\u8981\u7528\u76f8\u4f3c\u5ea6\u81ea\u52a8\u786e\u8ba4\u5546\u54c1\u8eab\u4efd\u6216\u4ef7\u683c\u3002<\/p>\n<h3>\u4e00\u4efd\u53ef\u4ea4\u63a5\u7684\u5b9e\u9a8c\u8bb0\u5f55<\/h3>\n<p>\u6837\u672c\u96c6\u56fa\u5b9a\u6388\u6743\u6765\u6e90\u3001\u67e5\u8be2\u3001\u76f8\u5173\u5546\u54c1 ID \u4e0e\u56f0\u96be\u8d1f\u6837\u672c&#xff1b;\u6309\u67e5\u8be2\u7edf\u8ba1 Recall&#064;k&#xff0c;\u5e76\u4fdd\u7559\u9519\u8bef\u6848\u4f8b\u3002\u82e5\u56fe\u5e93\u8f83\u5c0f&#xff0c;\u5148\u7528\u7cbe\u786e\u68c0\u7d22\u6821\u9a8c&#xff0c;\u518d\u5f15\u5165\u8fd1\u4f3c\u7d22\u5f15&#xff0c;\u907f\u514d\u628a\u6a21\u578b\u8bef\u5dee\u4e0e ANN 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API&#xff0c;2026-10-19\u3002\u91c7\u7528\u524d\u91cd\u65b0\u6838\u9a8c\u53ef\u5f97\u6743\u91cd\u3001\u8bb8\u53ef\u4e0e\u6d4f\u89c8\u5668\u8fd0\u884c\u8def\u7ebf\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u62ff\u6444\u50cf\u5934\u753b\u9762\u751f\u6210\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u6570\u7ec4&#xff0c;\u518d\u7b97\u4f59\u5f26\u76f8\u4f3c\u5ea6&#xff0c;\u6f14\u793a\u5f88\u5bb9\u6613\u505a\u51fa\u6765\u3002\u95ee\u9898\u662f&#xff0c;\u6570\u7ec4\u4ece\u54ea\u91cc\u6765&#xff1f;\u82e5\u6240\u6709\u56fe\u7247\u90fd\u8fd4\u56de\u540c\u4e00\u4e2a\u5411\u91cf&#xff0c;\u68c0\u7d22\u4ee3\u7801\u4f9d\u65e7\u80fd\u8fd0\u884c&#xff0c;\u6392\u5e8f\u5374\u6ca1\u6709\u4efb\u4f55\u8bed\u4e49\u4f9d\u636e\u3002<br \/>\nGoogle 2026 \u5e74 10 \u6708 6 \u65e5\u53d1\u5e03 EmbeddingGemma 2 \u76f8\u5173\u8d44\u6599&#xff0c;\u4e3a\u591a\u6a21\u6001\u68c0\u7d22\u63d0\u4f9b\u4e86\u65b0\u7684\u7814\u7a76\u5bf9\u8c61\u3002\u6a21\u578b\u5b58\u5728\u4e0e\u6d4f\u89c8\u5668\u53ef\u8fd0\u884c\u662f\u4e24\u4ef6\u9700\u8981\u5206\u522b\u9a8c\u8bc1\u7684\u4e8b\u3002\u672c\u6587\u4e0d\u865a\u6784\u6d4f\u89c8\u5668\u6743\u91cd\u3001\u7b97\u5b50\u652f\u6301\u6216\u8bbe\u5907\u541e\u5410&amp;#<\/p>\n","protected":false},"author":2,"featured_media":118774,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[13496,13498,10012,13497,13499],"topic":[],"class_list":["post-118776","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-embeddinggemma-2","tag-litert-js","tag-10012","tag-13497","tag-13499"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>EmbeddingGemma 2 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