{"id":95057,"date":"2026-08-16T07:25:18","date_gmt":"2026-08-15T23:25:18","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/95057.html"},"modified":"2026-08-16T07:25:18","modified_gmt":"2026-08-15T23:25:18","slug":"%e4%bb%80%e4%b9%88%e6%98%af%e6%b7%b7%e5%90%88%e6%90%9c%e7%b4%a2%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/95057.html","title":{"rendered":"\u4ec0\u4e48\u662f\u6df7\u5408\u641c\u7d22\uff1f"},"content":{"rendered":"<p>\u4e24\u79cd\u6216\u66f4\u591a\u68c0\u7d22\u65b9\u6cd5\u3002\u4e00\u4e2a\u6392\u5e8f\u5217\u8868\u3002<\/p>\n<\/p>\n<p>\u6df7\u5408\u641c\u7d22\u662f\u4e00\u79cd\u4fe1\u606f\u68c0\u7d22\u6280\u672f&#xff0c;\u5b83\u5c06\u4e24\u79cd\u6216\u66f4\u591a\u641c\u7d22\u65b9\u6cd5&#xff08;\u4f8b\u5982\u8bcd\u6c47\u641c\u7d22\/lexical \u548c\u8bed\u4e49\u641c\u7d22&#xff09;\u7ed3\u5408\u5230\u4e00\u4e2a\u7edf\u4e00\u7684\u6392\u5e8f\u5217\u8868\u4e2d&#xff0c;\u4ee5\u63d0\u5347\u76f8\u5173\u6027\u548c\u53ec\u56de\u7387\u3002\u6700\u5e38\u89c1\u7684\u7ec4\u5408\u662f\u5c06\u5168\u6587\u8bcd\u6cd5\u641c\u7d22\u4e0e\u8bed\u4e49\u5411\u91cf\u641c\u7d22\u7ed3\u5408\u8d77\u6765\u3002\u5168\u6587\u8bcd\u6cd5\u641c\u7d22\u975e\u5e38\u64c5\u957f\u5339\u914d\u7cbe\u786e\u7684\u8bcd\u8bed\u548c\u77ed\u8bed&#xff0c;\u800c\u8bed\u4e49\u5411\u91cf\u641c\u7d22\u5219\u80fd\u591f\u7406\u89e3\u67e5\u8be2\u80cc\u540e\u7684\u542b\u4e49\u3002\u8bcd\u6cd5\u641c\u7d22\u63d0\u4f9b\u7cbe\u51c6\u6027&#xff0c;\u8bed\u4e49\u641c\u7d22\u5219\u80fd\u591f\u6df1\u5165\u7406\u89e3\u7528\u6237\u7684\u6f5c\u5728\u610f\u56fe\u3002<\/p>\n<p>\u8fd9\u4e9b\u65b9\u6cd5\u4f1a\u5728\u4e00\u4e2a\u67e5\u8be2\u4e2d\u540c\u65f6\u8fd0\u884c&#xff0c;\u7136\u540e\u4f7f\u7528\u4e13\u95e8\u7684\u878d\u5408\u7b56\u7565\u5c06\u5b83\u4eec\u7684\u7ed3\u679c\u5408\u5e76\u6210\u4e00\u4e2a\u7edf\u4e00\u7684\u6392\u5e8f\u7ed3\u679c\u3002\u867d\u7136\u8bcd\u6cd5\u641c\u7d22 &#043; \u8bed\u4e49\u641c\u7d22\u662f\u6700\u5e38\u89c1\u7684\u7ec4\u5408&#xff0c;\u4f46\u6df7\u5408\u641c\u7d22\u4e5f\u53ef\u4ee5\u7ed3\u5408\u5176\u4ed6\u65b9\u6cd5&#xff0c;\u4f8b\u5982\u5730\u7406\u7a7a\u95f4\u641c\u7d22 &#043; \u8bed\u4e49\u641c\u7d22&#xff0c;\u751a\u81f3\u6587\u672c\u641c\u7d22 &#043; \u56fe\u50cf\u641c\u7d22&#xff0c;\u4ee5\u6ee1\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002<\/p>\n<\/p>\n<h2>\u4e3a\u4ec0\u4e48\u6df7\u5408\u641c\u7d22\u5f88\u91cd\u8981<\/h2>\n<p>\u6df7\u5408\u641c\u7d22\u53ef\u4ee5\u5728\u5355\u4e00\u6d41\u7a0b\u4e2d\u5229\u7528\u4e0d\u540c\u68c0\u7d22\u65b9\u6cd5\u7684\u4f18\u52bf&#xff0c;\u540c\u65f6\u5f25\u8865\u5404\u81ea\u7684\u4e0d\u8db3\u3002\u73b0\u4ee3 AI \u5fc5\u987b\u5904\u7406\u591a\u79cd\u6a21\u6001&#xff0c;\u5305\u62ec\u6587\u672c\u3001\u56fe\u50cf\u3001\u97f3\u9891\u3001\u65e5\u5fd7\u7b49&#xff0c;\u5e76\u5c06\u7528\u6237\u610f\u56fe\u4e0e\u6570\u636e\u8fde\u63a5\u8d77\u6765\u3002\u76f8\u5173\u6027\u6bd4\u4ee5\u5f80\u4efb\u4f55\u65f6\u5019\u90fd\u66f4\u52a0\u91cd\u8981\u3002\u4f8b\u5982&#xff0c;\u5728\u7535\u5b50\u5546\u52a1\u4e2d&#xff0c;\u5982\u679c\u641c\u7d22\u4f53\u9a8c\u80fd\u591f\u5e2e\u52a9\u7528\u6237\u5feb\u901f\u7b5b\u9009\u548c\u7ec6\u5316\u7ed3\u679c&#xff0c;\u5c31\u53ef\u4ee5\u53d6\u5f97\u6210\u529f&#xff1b;\u4f46 AI agent \u901a\u5e38\u9700\u8981\u4e00\u4e2a\u9ad8\u5ea6\u76f8\u5173\u7684\u7b54\u6848\u6765\u56de\u7b54\u95ee\u9898\u6216\u6267\u884c\u64cd\u4f5c\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u80fd\u591f\u7ec4\u5408\u548c\u4f18\u5316\u68c0\u7d22\u6280\u672f\u5728\u4eca\u5929\u5982\u6b64\u91cd\u8981&#xff0c;\u5b83\u4e0d\u4ec5\u4e3a\u4f20\u7edf\u641c\u7d22\u7ed3\u679c\u63d0\u4f9b\u652f\u6301&#xff0c;\u4e5f\u4e3a\u80fd\u591f\u63d0\u4f9b\u7cbe\u51c6\u3001\u4ee5\u6570\u636e\u4e3a\u4f9d\u636e\u7684\u54cd\u5e94\u7684\u5bf9\u8bdd\u5f0f agent \u63d0\u4f9b\u652f\u6301\u3002<\/p>\n<p>\u5728\u8fdb\u4e00\u6b65\u6df1\u5165\u4e86\u89e3\u6df7\u5408\u641c\u7d22\u4e4b\u524d&#xff0c;\u6211\u4eec\u5148\u5feb\u901f\u4e86\u89e3\u4e00\u4e0b\u8bcd\u6c47\u641c\u7d22\u548c\u8bed\u4e49\u641c\u7d22\u6709\u4f55\u4e0d\u540c&#xff0c;\u4ee5\u53ca\u4e3a\u4ec0\u4e48\u5b83\u4eec\u80fd\u591f\u4e92\u8865\u3002<\/p>\n<\/p>\n<h2>\u8bcd\u6c47\u641c\u7d22\u89e3\u6790<\/h2>\n<p>\u5f53\u4f60\u62e5\u6709\u7ed3\u6784\u826f\u597d\u7684\u6570\u636e&#xff0c;\u5e76\u4e14\u7528\u6237\u77e5\u9053\u81ea\u5df1\u8981\u627e\u4ec0\u4e48\u65f6&#xff0c;\u8bcd\u6c47\u641c\u7d22\u975e\u5e38\u7406\u60f3\u3002\u5b83\u80fd\u591f\u5339\u914d\u7cbe\u786e\u7684\u8bcd\u8bed&#xff0c;\u56e0\u6b64\u5177\u6709\u5f88\u9ad8\u7684\u7cbe\u51c6\u6027\u548c\u53ef\u89e3\u91ca\u6027&#xff0c;\u5e76\u4f9d\u8d56\u76f8\u5173\u6027\u8bc4\u5206\u7b97\u6cd5&#xff08;\u4f8b\u5982 BM25F&#xff09;\u6839\u636e\u67e5\u8be2\u8bcd\u7684\u9891\u7387\u548c\u7a00\u6709\u7a0b\u5ea6\u5bf9\u6587\u6863\u8fdb\u884c\u6392\u5e8f\u3002\u8fd9\u79cd\u65b9\u6cd5\u80fd\u591f\u63d0\u4f9b\u900f\u660e\u7684\u8bc4\u5206&#xff0c;\u5e76\u901a\u8fc7\u5b57\u6bb5 boost\u3001\u540c\u4e49\u8bcd\u548c\u5206\u6790\u5668\u5b9e\u73b0\u7cbe\u7ec6\u7684\u76f8\u5173\u6027\u8c03\u4f18\u3002\u7531\u4e8e\u6ca1\u6709\u6a21\u578b\u5f00\u9500&#xff0c;\u8bcd\u6c47\u641c\u7d22\u5feb\u901f\u4e14\u9ad8\u6548&#xff0c;\u5e76\u4e14\u901a\u8fc7\u8fc7\u6ee4\u5668\u548c\u5206\u9762&#xff0c;\u5373\u4f7f\u5728\u5927\u89c4\u6a21\u573a\u666f\u4e0b\u4e5f\u80fd\u7a33\u5b9a\u6267\u884c&#xff0c;\u4e0d\u4f1a\u51fa\u73b0\u6027\u80fd\u4e0b\u964d\u6216\u5b8c\u6574\u7d22\u5f15\u626b\u63cf\u3002\u5b83\u5c24\u5176\u9002\u7528\u4e8e\u7ed3\u6784\u5316\u67e5\u8be2\u3001\u7a00\u6709\u8bcd\u548c\u9886\u57df\u7279\u5b9a\u8bed\u8a00\u3002<\/p>\n<p style=\"text-align:center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260815232514-6a80f55a93b83.webp\" \/><\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u8bcd\u6cd5\u641c\u7d22\u67e5\u8be2\u793a\u4f8b&#xff1a;<\/p>\n<p>GET example-index\/_search<br \/>\n{<br \/>\n    &#034;query&#034;: {<br \/>\n        &#034;term&#034;: {<br \/>\n            &#034;text&#034;: &#034;blue shoes&#034;<br \/>\n        }<br \/>\n    }<br \/>\n} <\/p>\n<p>\u8ba9\u6211\u4eec\u518d\u6765\u770b\u4e00\u4e2a\u7c7b\u4f3c\u7684\u8bcd\u6cd5\u641c\u7d22\u793a\u4f8b&#xff0c;\u8fd9\u6b21\u4f7f\u7528 Elasticsearch Query Language&#xff08;ES|QL&#xff09;\u67e5\u8be2\u4e00\u4e2a\u70f9\u996a\u535a\u5ba2\u3002\u8be5\u535a\u5ba2\u5305\u542b\u5404\u79cd\u98df\u8c31&#xff0c;\u5e76\u5177\u6709\u5305\u62ec\u6587\u672c\u5185\u5bb9\u3001\u5206\u7c7b\u6570\u636e\u548c\u6570\u503c\u8bc4\u5206\u5728\u5185\u7684\u5404\u79cd\u5c5e\u6027\u3002<\/p>\n<p>FROM cooking_blog METADATA _score<br \/>\n| WHERE description:&#034;fluffy pancakes&#034;<br \/>\n| KEEP title, description, _score<br \/>\n| SORT _score DESC<br \/>\n| LIMIT 1000 <\/p>\n<p>\u8fd9\u4e2a\u67e5\u8be2\u4f1a\u5728 description \u5b57\u6bb5\u4e2d\u641c\u7d22\u5305\u542b\u201cfluffy\u201d\u6216\u201cpancakes\u201d&#xff08;\u6216\u4e24\u8005&#xff09;\u7684\u6587\u6863\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b&#xff0c;ES|QL\u4f1a\u5728\u641c\u7d22\u8bcd\u4e4b\u95f4\u4f7f\u7528 OR \u903b\u8f91&#xff0c;\u56e0\u6b64\u4f1a\u5339\u914d\u5305\u542b\u4efb\u610f\u6307\u5b9a\u8bcd\u8bed\u7684\u6587\u6863\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528 KEEP \u547d\u4ee4\u51c6\u786e\u6307\u5b9a\u8981\u5728\u7ed3\u679c\u4e2d\u5305\u542b\u54ea\u4e9b\u5b57\u6bb5&#xff0c;\u5e76\u8bf7\u6c42 _score \u5143\u6570\u636e&#xff0c;\u6839\u636e\u6587\u6863\u4e0e\u67e5\u8be2\u7684\u5339\u914d\u7a0b\u5ea6\u5bf9\u641c\u7d22\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n<p>\u901a\u8fc7\u8fd9\u4e2a\u5b9e\u8df5\u6559\u7a0b\u8fdb\u4e00\u6b65\u4e86\u89e3\u8bcd\u6cd5\u641c\u7d22\u3002<\/p>\n<\/p>\n<h2>\u8bed\u4e49\u641c\u7d22\u89e3\u6790<\/h2>\n<p>\u8bed\u4e49\u641c\u7d22\u6839\u636e\u67e5\u8be2\u4e0e\u6587\u6863\u4e4b\u95f4\u7684\u8bed\u4e49\u76f8\u4f3c\u5ea6\u6765\u68c0\u7d22\u7ed3\u679c&#xff0c;\u800c\u4e0d\u4ec5\u4ec5\u50cf\u8bcd\u6cd5\u641c\u7d22\u90a3\u6837\u5339\u914d\u7cbe\u786e\u7684\u8bcd\u8bed\u3002<\/p>\n<p>Embedding \u6a21\u578b\u4f1a\u5c06\u6587\u672c\u6216\u5176\u4ed6\u5a92\u4f53\u7684\u542b\u4e49\u8f6c\u6362\u6210\u4e00\u79cd\u79f0\u4e3a\u5411\u91cf\u7684\u6570\u503c\u8868\u793a\u3002\u8fd9\u4e9b\u5411\u91cf \u2014\u2014 \u4e00\u7ec4\u6570\u5b57 \u2014\u2014 \u80fd\u591f\u6355\u6349\u6587\u672c\u80cc\u540e\u7684\u4e0a\u4e0b\u6587\u548c\u4e3b\u9898&#xff0c;\u5e76\u5b58\u50a8\u5728\u7c7b\u4f3c Elasticsearch \u7684\u5411\u91cf\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n<p>\u8fd9\u6837&#xff0c;\u5373\u4f7f\u7ed3\u679c\u4e0e\u67e5\u8be2\u4e4b\u95f4\u6ca1\u6709\u4efb\u4f55\u5b8c\u5168\u76f8\u540c\u7684\u8bcd\u8bed&#xff0c;\u641c\u7d22\u5f15\u64ce\u4e5f\u80fd\u591f\u627e\u5230\u6982\u5ff5\u4e0a\u76f8\u4f3c\u7684\u7ed3\u679c\u3002<\/p>\n<p style=\"text-align:center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260815232514-6a80f55add176.webp\" \/><\/p>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u7279\u522b\u9002\u7528\u4e8e\u975e\u7ed3\u6784\u5316\u6570\u636e\u3001\u63a2\u7d22\u6027\u67e5\u8be2&#xff0c;\u4ee5\u53ca\u7528\u6237\u53ef\u80fd\u4e0d\u77e5\u9053\u5e94\u8be5\u4f7f\u7528\u54ea\u4e9b\u786e\u5207\u8bcd\u8bed\u7684\u573a\u666f\u3002\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u5229\u7528\u8bed\u4e49\u641c\u7d22\u63d0\u4f9b\u66f4\u76f8\u5173\u7684\u7ed3\u679c&#xff0c;\u5e76\u5904\u7406\u6a21\u7cca\u3001\u5197\u957f\u6216\u542b\u4e49\u4e0d\u660e\u786e\u7684\u8868\u8fbe&#xff0c;\u540c\u65f6\u4ecd\u7136\u627e\u5230\u6b63\u786e\u7684\u7b54\u6848\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u8bed\u4e49\u641c\u7d22\u67e5\u8be2\u793a\u4f8b&#xff1a;<\/p>\n<p>GET example-index\/_search<br \/>\n{<br \/>\n  &#034;query&#034;: {<br \/>\n    &#034;semantic&#034;: {<br \/>\n      &#034;field&#034;: &#034;inference_field&#034;,<br \/>\n      &#034;query&#034;: &#034;blue waterproof trail runners with great grip and a wide toe box&#034;<br \/>\n    }<br \/>\n  }<br \/>\n} <\/p>\n<p>\u5f53\u4f60\u7684\u6620\u5c04\u4e2d\u5305\u542b semantic_text \u7c7b\u578b\u7684\u5b57\u6bb5\u65f6&#xff0c;ES|QL \u652f\u6301\u8bed\u4e49\u641c\u7d22\u3002\u6587\u6863\u7ecf\u8fc7\u8fd0\u884c\u5728 inference endpoint \u4e0a\u7684\u5e95\u5c42\u6a21\u578b\u5904\u7406\u540e&#xff0c;\u4f60\u5c31\u53ef\u4ee5\u6267\u884c\u8bed\u4e49\u641c\u7d22\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u9488\u5bf9 semantic_description \u5b57\u6bb5\u7684\u81ea\u7136\u8bed\u8a00\u67e5\u8be2\u793a\u4f8b&#xff1a;<\/p>\n<p>FROM cooking_blog METADATA _score<br \/>\n| WHERE semantic_description:&#034;What are some easy to prepare but nutritious plant-based meals?&#034;<br \/>\n| SORT _score DESC<br \/>\n| LIMIT 5 <\/p>\n<p>\u8fdb\u4e00\u6b65\u4e86\u89e3\u8bed\u4e49\u641c\u7d22&#xff0c;\u6216\u8005\u5c1d\u8bd5\u8fd9\u4e2a\u5b9e\u8df5\u6559\u7a0b\u8fdb\u884c\u6df1\u5165\u5b66\u4e60\u3002<\/p>\n<p>\u50cf BM25F \u8fd9\u6837\u7684\u8bcd\u6cd5\u7b97\u6cd5\u5728\u67e5\u8be2\u8bcd\u4e0e\u6587\u6863\u8bcd\u8bed\u5339\u914d\u65f6&#xff0c;\u80fd\u591f\u63d0\u4f9b\u51fa\u8272\u7684\u7cbe\u51c6\u6027&#xff0c;\u4f46\u5f53\u76f8\u5173\u5185\u5bb9\u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u8868\u8fbe\u65f6\u5c31\u4f1a\u5931\u6548\u3002&#xff08;\u4f8b\u5982&#xff0c;\u67e5\u8be2 \u201cathletic footwear\u201d \u53ef\u80fd\u65e0\u6cd5\u627e\u5230\u53ea\u5199\u4e86 \u201cshoes\u201d \u6216 \u201ctrail runner\u201d \u7684\u6587\u6863\u3002&#xff09;\u8bed\u4e49\u5411\u91cf\u641c\u7d22\u4f7f\u7528\u9ad8\u7ef4 embedding \u548c\u8fd1\u4f3c\u6700\u8fd1\u90bb&#xff08;ANN&#xff09;\u7b97\u6cd5&#xff08;\u4f8b\u5982 HNSW&#xff09;&#xff0c;\u65e0\u8bba\u7cbe\u786e\u8bcd\u8bed\u662f\u5426\u91cd\u53e0&#xff0c;\u90fd\u80fd\u591f\u68c0\u7d22\u51fa\u6982\u5ff5\u4e0a\u76f8\u4f3c\u7684\u6587\u6863 \u2014\u2014 \u4f46\u5f53\u4e0a\u4e0b\u6587\u5b58\u5728\u6b67\u4e49\u65f6&#xff0c;\u4e5f\u53ef\u80fd\u5f15\u5165\u566a\u58f0\u3002<\/p>\n<\/p>\n<h2>\u6df7\u5408\u641c\u7d22\u5982\u4f55\u5de5\u4f5c<\/h2>\n<p>\u5982\u679c\u4f60\u53ef\u4ee5\u540c\u65f6\u83b7\u5f97\u4e24\u8005\u7684\u4f18\u52bf\u5462&#xff1f;\u8fd9\u5c31\u662f\u6df7\u5408\u641c\u7d22\u3002\u5982\u679c\u5b9e\u73b0\u5f97\u5f53&#xff0c;\u6df7\u5408\u641c\u7d22\u7684\u6548\u679c\u4e0d\u53ea\u662f\u5404\u90e8\u5206\u7b80\u5355\u76f8\u52a0&#xff1b;\u5b83\u53ef\u4ee5\u4ea7\u751f\u8fdc\u4f18\u4e8e\u5355\u72ec\u4f7f\u7528\u8bcd\u6cd5\u641c\u7d22\u6216\u8bed\u4e49\u641c\u7d22\u7684\u7ed3\u679c\u3002\u6df7\u5408\u641c\u7d22\u53ef\u4ee5\u540c\u65f6\u63d0\u4f9b\u4e24\u8005\u7684\u4f18\u52bf&#xff0c;\u5e26\u6765\u66f4\u52a0\u5747\u8861\u7684\u76f8\u5173\u6027\u3001\u66f4\u9ad8\u7684\u5f52\u4e00\u5316\u6298\u635f\u7d2f\u8ba1\u589e\u76ca&#xff08;NDCG&#xff09;\u4ee5\u53ca\u66f4\u9ad8\u7684\u53ec\u56de\u7387&#xff0c;\u800c\u65e0\u9700\u989d\u5916\u90e8\u7f72\u7b2c\u4e8c\u5957\u641c\u7d22\u7cfb\u7edf\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u6df7\u5408\u641c\u7d22\u67e5\u8be2\u793a\u4f8b&#xff1a;<\/p>\n<p>GET example-index\/_search<br \/>\n{<br \/>\n  &#034;retriever&#034;: {<br \/>\n    &#034;rrf&#034;: {<br \/>\n      &#034;retrievers&#034;: [<br \/>\n        {<br \/>\n          &#034;standard&#034;: {<br \/>\n            &#034;query&#034;: {<br \/>\n              &#034;term&#034;: {<br \/>\n                &#034;description&#034;: &#034;shoes&#034;<br \/>\n              }<br \/>\n            }<br \/>\n          }<br \/>\n        },<br \/>\n        {<br \/>\n          &#034;knn&#034;: {<br \/>\n            &#034;field&#034;: &#034;vector&#034;,<br \/>\n            &#034;query_vector&#034;: [1.25, 2, 3.5],<br \/>\n            &#034;k&#034;: 50,<br \/>\n            &#034;num_candidates&#034;: 100<br \/>\n          }<br \/>\n        }<br \/>\n      ],<br \/>\n      &#034;rank_constant&#034;: 20,<br \/>\n      &#034;rank_window_size&#034;: 50<br \/>\n    }<br \/>\n  }<br \/>\n} <\/p>\n<p>\u4f60\u4e5f\u53ef\u4ee5\u5728 ES|QL \u4e2d\u7ec4\u5408\u5168\u6587\u641c\u7d22\u548c\u8bed\u4e49\u67e5\u8be2\u3002\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d&#xff0c;\u6211\u4eec\u4f7f\u7528\u81ea\u5b9a\u4e49\u6743\u91cd\u5c06\u5168\u6587\u641c\u7d22\u548c\u8bed\u4e49\u641c\u7d22\u7ed3\u5408\u8d77\u6765&#xff1a;<\/p>\n<p>FROM my-index METADATA _score<br \/>\n| FORK ( WHERE match(text_field:&#034;shoes&#034;) | SORT _score DESC | LIMIT 50)<br \/>\n       ( WHERE knn(vector, [1.25, 2, 3.5], { &#034;min_candidates&#034; : 100 }) | SORT _score DESC | LIMIT 50 ) \/\/ k for knn is derived from LIMIT<br \/>\n| FUSE RRF WITH { &#034;rank_constant&#034;: 20 }<br \/>\n| SORT _score DESC<br \/>\n| LIMIT 50 <\/p>\n<p>\u6267\u884c\u6df7\u5408\u641c\u7d22\u67e5\u8be2\u901a\u5e38\u9700\u8981\u81f3\u5c11\u6267\u884c\u4e00\u6b21\u8bcd\u6cd5\u641c\u7d22\u548c\u4e00\u6b21\u8bed\u4e49\u641c\u7d22&#xff0c;\u7136\u540e\u5c06\u5b83\u4eec\u7684\u7ed3\u679c\u7ed3\u5408\u8d77\u6765\u3002<\/p>\n<p>\u5176\u4e2d\u6700\u5927\u7684\u6311\u6218\u5728\u4e8e\u5982\u4f55\u5c06\u591a\u4e2a\u5df2\u6392\u5e8f\u7684\u7ed3\u679c\u5217\u8868\u5408\u5e76\u6210\u4e00\u4e2a\u7edf\u4e00\u4e14\u8fde\u8d2f\u7684\u6392\u5e8f\u7ed3\u679c\u3002<\/p>\n<p>\u7531 BM25F \u6216 TF-IDF \u7b49\u7b97\u6cd5\u751f\u6210\u7684\u8bcd\u6cd5\u641c\u7d22\u5206\u6570\u53ef\u80fd\u6ca1\u6709\u4e0a\u9650&#xff0c;\u5176\u6700\u5927\u503c\u4f1a\u53d7\u5230\u8bcd\u9891\u548c\u6587\u6863\u5206\u5e03\u7684\u5f71\u54cd\u3002\u76f8\u6bd4\u4e4b\u4e0b&#xff0c;\u8bed\u4e49\u641c\u7d22\u5206\u6570\u901a\u5e38\u4f4d\u4e8e\u4e00\u4e2a\u56fa\u5b9a\u8303\u56f4\u5185&#xff0c;\u8be5\u8303\u56f4\u7531\u76f8\u4f3c\u5ea6\u51fd\u6570\u51b3\u5b9a&#xff08;\u4f8b\u5982&#xff0c;\u4f59\u5f26\u76f8\u4f3c\u5ea6\u7684\u8303\u56f4\u4e3a [0, 2]&#xff09;\u3002<\/p>\n<p>\u8981\u5c06\u5b83\u4eec\u5408\u5e76&#xff0c;\u4f60\u9700\u8981\u4e00\u79cd\u878d\u5408\u65b9\u6cd5&#xff0c;\u5728\u5408\u5e76\u8fc7\u7a0b\u4e2d\u4fdd\u6301\u68c0\u7d22\u6587\u6863\u4e4b\u95f4\u7684\u76f8\u5bf9\u76f8\u5173\u6027\u3002<\/p>\n<\/p>\n<h2>\u4f7f\u7528 Elasticsearch \u8fdb\u884c\u6df7\u5408\u641c\u7d22<\/h2>\n<p style=\"text-align:center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260815232514-6a80f55ae6bf9.webp\" \/><\/p>\n<p>\u4f7f\u7528 Elasticsearch \u5b9e\u73b0\u6df7\u5408\u641c\u7d22&#xff0c;\u53ef\u4ee5\u5c06\u6807\u51c6\u5173\u952e\u8bcd\u67e5\u8be2\u4e0e\u5411\u91cf\u67e5\u8be2\u7ed3\u5408\u8d77\u6765&#xff0c;\u4e5f\u53ef\u4ee5\u4f7f\u7528 retriever\u00a0\u2014\u2014 \u4e00\u79cd\u80fd\u591f\u8fd0\u884c\u591a\u79cd\u4e0d\u540c\u7c7b\u578b\u7684\u67e5\u8be2&#xff0c;\u5e76\u4f7f\u7528\u9009\u5b9a\u7684\u8bc4\u5206\u65b9\u6cd5\u5c06\u5b83\u4eec\u7684\u7ed3\u679c\u5408\u5e76\u6210\u4e00\u4e2a\u7edf\u4e00\u6392\u5e8f\u5217\u8868\u7684\u641c\u7d22\u9009\u9879\u3002\u8fd9\u6837\u53ef\u4ee5\u5728\u4e00\u6b21\u641c\u7d22\u8c03\u7528\u4e2d\u5b9e\u73b0\u591a\u9636\u6bb5\u68c0\u7d22\u6d41\u7a0b&#xff0c;\u65e0\u9700\u53d1\u9001\u591a\u4e2a\u8bf7\u6c42&#xff0c;\u4e5f\u65e0\u9700\u989d\u5916\u7f16\u5199\u5ba2\u6237\u7aef\u903b\u8f91\u6765\u5408\u5e76\u7ed3\u679c\u3002<\/p>\n<p>Elasticsearch \u63d0\u4f9b\u4e86\u4e24\u79cd\u5185\u7f6e\u7684\u878d\u5408\u65b9\u6cd5&#xff1a;\u5012\u6570\u6392\u540d\u878d\u5408&#xff08;RRF&#xff09;\u548c\u7ebf\u6027\u7ec4\u5408&#xff08;API \u4e2d\u901a\u5e38\u79f0\u4e3a linear retriever&#xff09;\u3002\u4e24\u8005\u90fd\u65e8\u5728\u751f\u6210\u4e00\u4e2a\u7edf\u4e00\u7684\u6392\u5e8f\u7ed3\u679c&#xff0c;\u540c\u65f6\u4fdd\u7559\u5404\u4e2a retriever \u7684\u4f18\u52bf&#xff0c;\u4f46\u5b83\u4eec\u5904\u7406\u5206\u6570\u7684\u65b9\u5f0f\u4e0d\u540c&#xff0c;\u6700\u9002\u7528\u7684\u573a\u666f\u4e5f\u4e0d\u540c\u3002<\/p>\n<p>\u5012\u6570\u6392\u540d\u878d\u5408\u5b8c\u5168\u5ffd\u7565\u539f\u59cb\u5206\u6570&#xff0c;\u53ea\u5173\u6ce8\u6587\u6863\u5728\u6bcf\u4e2a\u5217\u8868\u4e2d\u7684\u6392\u540d\u4f4d\u7f6e\u3002\u6392\u540d\u9760\u524d\u7684\u6587\u6863\u4f1a\u83b7\u5f97\u8f83\u9ad8\u7684\u5956\u52b1&#xff0c;\u800c\u51fa\u73b0\u5728\u591a\u4e2a\u5217\u8868\u4e2d\u7684\u6587\u6863\u4f1a\u83b7\u5f97\u7d2f\u52a0\u7684 boost\u3002\u8fd9\u79cd\u65b9\u6cd5\u5177\u6709\u5f88\u5f3a\u7684\u9c81\u68d2\u6027&#xff0c;\u56e0\u4e3a\u5b83\u907f\u5f00\u4e86\u4e0d\u540c\u5206\u6570\u8303\u56f4\u4e0d\u517c\u5bb9\u7684\u95ee\u9898&#xff0c;\u9664\u4e86 rank \u5e38\u6570\u4e4b\u5916\u51e0\u4e4e\u4e0d\u9700\u8981\u8c03\u4f18&#xff0c;\u5e76\u4e14\u80fd\u591f\u81ea\u7136\u5730\u63d0\u5347\u9876\u90e8\u7ed3\u679c\u7684\u591a\u6837\u6027\u3002<\/p>\n<p>RRF \u4f1a\u6839\u636e\u6587\u6863\u5728\u7ed3\u679c\u96c6\u4e2d\u7684\u6392\u540d\u5bf9\u6587\u6863\u8fdb\u884c\u8bc4\u5206&#xff0c;\u4f7f\u7528\u4ee5\u4e0b\u516c\u5f0f&#xff0c;\u5176\u4e2d k \u662f\u4e00\u4e2a\u7528\u4e8e\u8c03\u6574\u4f4e\u6392\u540d\u6587\u6863\u91cd\u8981\u6027\u7684\u4efb\u610f\u5e38\u6570&#xff1a;<\/p>\n<p style=\"text-align:center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260815232514-6a80f55af0014.webp\" \/><\/p>\n<p>RRF \u7279\u522b\u9002\u7528\u4e8e\u4e0d\u540c retriever \u7684\u9876\u90e8\u7ed3\u679c\u5b58\u5728\u4e00\u5b9a\u91cd\u53e0\u7684\u573a\u666f&#xff0c;\u4ee5\u53ca\u5f00\u53d1\u4eba\u5458\u9700\u8981\u4e00\u79cd\u5373\u63d2\u5373\u7528\u7684\u89e3\u51b3\u65b9\u6848&#xff0c;\u800c\u4e0d\u9700\u8981\u5e26\u6807\u7b7e\u7684\u8bad\u7ec3\u6570\u636e\u6216\u590d\u6742\u7684\u6821\u51c6\u3002<\/p>\n<p>\u76f8\u6bd4\u4e4b\u4e0b&#xff0c;\u7ebf\u6027\u7ec4\u5408\u4f1a\u76f4\u63a5\u5408\u5e76\u6bcf\u4e2a retriever \u7684\u5b9e\u9645\u5206\u6570\u3002\u7531\u4e8e\u8bcd\u6cd5\u641c\u7d22\u548c\u8bed\u4e49\u641c\u7d22\u7684\u5206\u6570\u5904\u4e8e\u975e\u5e38\u4e0d\u540c\u7684\u5c3a\u5ea6&#xff0c;\u56e0\u6b64\u7ebf\u6027\u7ec4\u5408\u9700\u8981\u8fdb\u884c\u5f52\u4e00\u5316&#xff0c;\u4f8b\u5982\u4f7f\u7528min-max \u7f29\u653e&#xff0c;\u5c06\u5206\u6570\u8f6c\u6362\u5230\u53ef\u6bd4\u8f83\u7684\u8303\u56f4\u3002<\/p>\n<p>\u5b8c\u6210\u5f52\u4e00\u5316\u540e&#xff0c;\u4f1a\u4f7f\u7528\u4ee3\u8868\u6bcf\u4e2a retriever \u76f8\u5bf9\u91cd\u8981\u6027\u7684\u6743\u91cd\u5bf9\u5206\u6570\u8fdb\u884c\u878d\u5408\u3002\u6743\u91cd\u5927\u4e8e 1 \u4f1a\u589e\u5f3a\u67d0\u4e2a retriever \u7684\u5f71\u54cd\u529b&#xff0c;\u800c\u6743\u91cd\u5c0f\u4e8e 1 \u5219\u4f1a\u964d\u4f4e\u5176\u5f71\u54cd\u529b\u3002<\/p>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u63d0\u4f9b\u4e86\u7ec6\u7c92\u5ea6\u7684\u63a7\u5236&#xff1a;\u5f53\u5173\u952e\u8bcd\u7cbe\u51c6\u6027\u5f88\u91cd\u8981\u65f6&#xff0c;\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u63d0\u9ad8 BM25F \u7684\u6743\u91cd&#xff1b;\u5f53\u7528\u6237\u610f\u56fe\u548c\u4e0a\u4e0b\u6587\u81f3\u5173\u91cd\u8981\u65f6&#xff0c;\u53ef\u4ee5\u504f\u5411\u8bed\u4e49\u76f8\u4f3c\u5ea6&#xff1b;\u8fd8\u53ef\u4ee5\u5c06\u989d\u5916\u7684\u4e1a\u52a1\u6216\u4e2a\u6027\u5316\u4fe1\u53f7\u4e0e\u68c0\u7d22\u5206\u6570\u7ed3\u5408\u8d77\u6765\u3002\u5f53\u6743\u91cd\u7ecf\u8fc7\u4ed4\u7ec6\u6821\u51c6\u540e&#xff0c;\u7ebf\u6027\u7ec4\u5408\u53ef\u4ee5\u901a\u8fc7\u751f\u6210\u66f4\u52a0\u51c6\u786e\u4e14\u53ef\u9884\u6d4b\u7684\u6392\u5e8f\u7ed3\u679c\u800c\u4f18\u4e8e RRF&#xff0c;\u4f46\u5b83\u786e\u5b9e\u9700\u8981\u8fdb\u884c\u5b9e\u9a8c&#xff0c;\u5e76\u4e14\u5bf9\u7279\u5b9a\u6570\u636e\u96c6\u7684\u8c03\u4f18\u8f83\u4e3a\u654f\u611f\u3002<\/p>\n<p>\u7ebf\u6027\u7ec4\u5408\u4f1a\u4f7f\u7528\u5404\u81ea\u7684\u6743\u91cd\u4ee5\u53ca \u03b2&#xff08;\u5176\u4e2d 0 \u2264 \u03b1\u3001\u03b2&#xff09;\u6765\u7ec4\u5408\u8bcd\u6cd5\u641c\u7d22\u7ed3\u679c\u548c\u8bed\u4e49\u641c\u7d22\u7ed3\u679c&#xff0c;\u5176\u516c\u5f0f\u5982\u4e0b&#xff1a;<\/p>\n<p style=\"text-align:center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260815232515-6a80f55b051d2.webp\" \/><\/p>\n<p>\u5728\u5b9e\u8df5\u4e2d&#xff0c;RRF \u662f\u6df7\u5408\u641c\u7d22\u7684\u6700\u4f73\u8d77\u70b9&#xff0c;\u56e0\u4e3a\u5b83\u7b80\u5355&#xff0c;\u5e76\u4e14\u80fd\u591f\u5f88\u597d\u5730\u5e94\u5bf9\u4e0d\u540c\u5206\u6570\u5c3a\u5ea6\u4e0d\u5339\u914d\u7684\u95ee\u9898\u3002\u5b83\u65e0\u9700\u5927\u91cf\u8c03\u4f18\u5c31\u80fd\u4ea7\u751f\u826f\u597d\u7684\u7ed3\u679c&#xff0c;\u56e0\u6b64\u975e\u5e38\u9002\u5408\u539f\u578b\u5f00\u53d1\u6216\u4e0d\u540c retriever \u7684\u7ed3\u679c\u5b58\u5728\u91cd\u53e0\u7684\u573a\u666f\u3002\u7ebf\u6027\u7ec4\u5408\u5219\u66f4\u9002\u5408\u4e0d\u540c\u68c0\u7d22\u65b9\u6cd5\u8fd4\u56de\u4e92\u4e0d\u91cd\u53e0\u7684\u7ed3\u679c&#xff0c;\u6216\u8005\u9700\u8981\u4ed4\u7ec6\u5e73\u8861\u8bcd\u6cd5\u3001\u8bed\u4e49\u548c\u5916\u90e8\u4fe1\u53f7\u7684\u573a\u666f\u3002\u7b80\u800c\u8a00\u4e4b&#xff0c;RRF \u53ef\u4ee5\u5f00\u7bb1\u5373\u7528\u5730\u63d0\u4f9b\u5feb\u901f\u3001\u53ef\u9760\u7684\u6df7\u5408\u80fd\u529b&#xff0c;\u800c\u7ebf\u6027\u7ec4\u5408\u5728\u9488\u5bf9\u5177\u4f53\u5e94\u7528\u548c\u6570\u636e\u8c03\u4f18\u6743\u91cd\u53ca\u5f52\u4e00\u5316\u5668\u540e&#xff0c;\u5219\u5177\u6709\u66f4\u9ad8\u7684\u6f5c\u5728\u51c6\u786e\u6027\u3002<\/p>\n<p>\u603b\u7ed3\u5982\u4e0b&#xff1a;<\/p>\n<table>\n<tr>\u5012\u6570\u6392\u540d\u878d\u5408&#xff08;RRF&#xff09;\u7ebf\u6027\u7ec4\u5408&#xff08;Linear combination&#xff09;<\/tr>\n<tbody>\n<tr>\n<td>\n<p>\u2022 \u5373\u63d2\u5373\u7528<\/p>\n<p>\u2022 \u5bf9\u6bcf\u4e2a\u4fe1\u53f7\u8fdb\u884c\u7b49\u6743\u91cd\u5904\u7406<\/p>\n<p>\u2022 \u5f53\u7ed3\u679c\u5217\u8868\u5b58\u5728\u91cd\u53e0\u65f6\u6548\u679c\u51fa\u8272<\/p>\n<p>\u2022 \u63d0\u5347\u9876\u90e8\u7ed3\u679c\u7684\u591a\u6837\u6027<\/p>\n<p>\u2022 \u53ea\u9700\u8c03\u8282\u4e00\u4e2a\u53c2\u6570&#xff1a;rank_constant<\/p>\n<p>\u4ece RRF \u5f00\u59cb&#xff0c;\u53ef\u4ee5\u5feb\u901f\u83b7\u5f97\u7a33\u5b9a\u7684\u6df7\u5408\u641c\u7d22\u7ed3\u679c\u3002<\/p>\n<\/td>\n<td>\n<p>\u2022 \u4f7f\u7528\u5f52\u4e00\u5316\u540e\u7684\u5206\u6570\u8fdb\u884c\u52a0\u6743\u878d\u5408<\/p>\n<p>\u2022 \u53ef\u4ee5\u4f18\u5148\u8003\u8651\u4e1a\u52a1\u6216\u4e2a\u6027\u5316\u4fe1\u53f7<\/p>\n<p>\u2022 \u80fd\u5f88\u597d\u5730\u5904\u7406\u4e92\u4e0d\u91cd\u53e0\u7684\u7ed3\u679c\u96c6<\/p>\n<p>\u2022 \u53ef\u4ee5\u9009\u62e9\u5f52\u4e00\u5316\u5668\u6765\u63a7\u5236\u504f\u5dee\u2022<\/p>\n<p>\u63d0\u4f9b\u7ec6\u7c92\u5ea6\u7684\u63a7\u5236<\/p>\n<p>\u5f53\u4f60\u51c6\u5907\u8fdb\u4e00\u6b65\u7cbe\u7ec6\u8c03\u4f18\u76f8\u5173\u6027\u65f6&#xff0c;\u518d\u8f6c\u5411\u7ebf\u6027\u7ec4\u5408\u3002<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u7b80\u800c\u8a00\u4e4b&#xff0c;\u7ebf\u6027\u7ec4\u5408&#xff08;linear combination&#xff09;\u5728\u7ecf\u8fc7\u8c03\u4f18\u540e\u5177\u6709\u66f4\u9ad8\u7684\u6f5c\u5728\u51c6\u786e\u6027&#xff0c;\u800c RRF \u66f4\u5bb9\u6613\u5b9e\u73b0&#xff0c;\u5e76\u4e14\u65e0\u9700\u5e26\u6807\u7b7e\u7684\u8bad\u7ec3\u6570\u636e\u4e5f\u80fd\u53d6\u5f97\u826f\u597d\u7684\u6548\u679c\u3002<\/p>\n<p>\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u6559\u7a0b\u8fdb\u4e00\u6b65\u4e86\u89e3\u6df7\u5408\u641c\u7d22\u3002<\/p>\n<\/p>\n<h3>\u6df7\u5408\u641c\u7d22\u7684\u68c0\u7d22\u6d41\u7a0b<\/h3>\n<li>\n<p>\u8bcd\u6c47\u68c0\u7d22&#xff1a;BM25F \u5c06\u67e5\u8be2\u8bcd\u4e0e\u7d22\u5f15\u4e2d\u7684 token \u8fdb\u884c\u5339\u914d&#xff0c;\u975e\u5e38\u9002\u5408\u7cbe\u51c6\u5339\u914d\u3001\u7ed3\u6784\u5316\u8fc7\u6ee4\u4ee5\u53ca\u53ef\u89e3\u91ca\u7684\u8bc4\u5206\u3002<\/p>\n<\/li>\n<li>\n<p>\u8bed\u4e49\u68c0\u7d22&#xff1a;\u5411\u91cf&#xff08;\u7a20\u5bc6\u5411\u91cf\u6216\u7a00\u758f\u5411\u91cf&#xff09;\u8868\u793a\u6587\u672c\u7684\u8bed\u4e49&#xff1b;\u76f8\u4f3c\u5ea6\u641c\u7d22\u80fd\u591f\u627e\u5230\u76f8\u5173\u5185\u5bb9&#xff0c;\u5373\u4f7f\u5b83\u4eec\u4e0e\u67e5\u8be2\u4e4b\u95f4\u6ca1\u6709\u5171\u540c\u7684\u8bcd\u8bed\u3002<\/p>\n<\/li>\n<li>\n<p>\u878d\u5408&#xff1a;\u4f7f\u7528 RRF\u3001\u52a0\u6743\u878d\u5408\u6216 linear retriever \u5c06\u7ed3\u679c\u8fdb\u884c\u7ec4\u5408\u3002\u8fc7\u6ee4\u5668\u548c boost \u53ef\u4ee5\u4e00\u81f4\u5730\u5e94\u7528\u4e8e\u8fd9\u4e24\u79cd\u68c0\u7d22\u65b9\u5f0f\u3002<\/p>\n<\/li>\n<table>\n<tr>\u641c\u7d22\u7c7b\u578b\u5de5\u4f5c\u539f\u7406\u7ed3\u679c\u8868\u73b0\u9002\u7528\u573a\u666f<\/tr>\n<tbody>\n<tr>\n<td>\u8bcd\u6cd5\u641c\u7d22&#xff08;Lexical search&#xff09;\u67e5\u8be2&#xff1a;\u201cred running shoes size 10\u201d<\/td>\n<td>\u5c06\u67e5\u8be2\u4e2d\u7684\u7cbe\u786e\u8bcd\u8bed\u4e0e\u6587\u6863\u4e2d\u7684\u8bcd\u8bed\u8fdb\u884c\u5339\u914d&#xff08;BM25F\u3001TF-IDF\u3001\u5206\u6790\u5668\u3001\u540c\u4e49\u8bcd&#xff09;\u3002<\/td>\n<td>\u627e\u5230\u6807\u9898\u6216\u63cf\u8ff0\u4e2d\u5305\u542b\u8fd9\u4e9b\u7cbe\u786e token \u7684\u5546\u54c1&#xff0c;\u4f8b\u5982&#xff1a;\u201cNike Men&#039;s Red Running Shoes, Size 10\u201d\u3002<\/td>\n<td>\u7528\u6237\u975e\u5e38\u660e\u786e\u81ea\u5df1\u60f3\u8981\u4ec0\u4e48\u3002\u7cbe\u51c6\u3001\u53ef\u89e3\u91ca\u4e14\u9ad8\u6548\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u8bed\u4e49\u641c\u7d22&#xff08;Semantic search&#xff09;\u67e5\u8be2&#xff1a;\u201clightweight shoes for jogging\u201d<\/td>\n<td>\u4f7f\u7528 embedding \u6355\u6349\u8bed\u4e49\u548c\u4e0a\u4e0b\u6587&#xff0c;\u800c\u4e0d\u4ec5\u4ec5\u662f\u5173\u952e\u8bcd\u3002\u5373\u4f7f\u8bcd\u8bed\u4e0d\u5339\u914d&#xff0c;\u4e5f\u80fd\u627e\u5230\u6982\u5ff5\u4e0a\u76f8\u5173\u7684\u7ed3\u679c\u3002<\/td>\n<td>\u53ef\u4ee5\u8fd4\u56de\u201cAdidas Cloudfoam Running Sneakers, Size 10\u201d&#xff0c;\u5373\u4f7f\u5176\u4e2d\u6ca1\u6709\u76f4\u63a5\u51fa\u73b0\u201clightweight\u201d\u548c\u201cjogging\u201d\u3002<\/td>\n<td>\u7528\u6237\u901a\u8fc7\u81ea\u7136\u8bed\u8a00\u63cf\u8ff0\u81ea\u5df1\u7684\u610f\u56fe\u3002\u9002\u5408\u6a21\u7cca\u6216\u63cf\u8ff0\u6027\u7684\u67e5\u8be2\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u6df7\u5408\u641c\u7d22&#xff08;Hybrid search&#xff09;\u67e5\u8be2&#xff1a;\u201ccomfortable dress shoes for office\u201d<\/td>\n<td>\u7ed3\u5408\u8bcd\u6cd5\u548c\u8bed\u4e49\u641c\u7d22\u7ed3\u679c&#xff0c;\u7136\u540e\u878d\u5408\u5b83\u4eec\u7684\u6392\u5e8f&#xff08;\u4f8b\u5982\u4f7f\u7528 RRF&#xff09;\u3002<\/td>\n<td>\u540c\u65f6\u68c0\u7d22\u7cbe\u786e\u5339\u914d\u7684\u7ed3\u679c&#xff0c;\u4f8b\u5982\u201cBlack Leather Dress Shoes, Comfort Fit\u201d&#xff0c;\u4ee5\u53ca\u8bed\u4e49\u76f8\u5173\u7684\u7ed3\u679c&#xff0c;\u4f8b\u5982\u201cLoafers with cushioned insoles\u201d&#xff0c;\u5e76\u6309\u7167\u76f8\u5173\u6027\u7edf\u4e00\u6392\u5e8f\u3002<\/td>\n<td>\u67e5\u8be2\u540c\u65f6\u5305\u542b\u7cbe\u786e\u6761\u4ef6\u548c\u7528\u6237\u610f\u56fe\u3002\u80fd\u591f\u5728\u51c6\u786e\u6027\u4e0e\u63a2\u7d22\u80fd\u529b\u4e4b\u95f4\u53d6\u5f97\u5e73\u8861\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u6df1\u5165\u4e86\u89e3\u6df7\u5408\u641c\u7d22&#xff1a;\u89e3\u6790\u7a20\u5bc6\u5411\u91cf\u548c\u7a00\u758f\u5411\u91cf<\/h2>\n<p>Elasticsearch \u4e2d\u7684\u8bed\u4e49\u641c\u7d22\u901a\u8fc7\u5c06\u67e5\u8be2\u548c\u6587\u6863\u8f6c\u6362\u4e3a\u80fd\u591f\u6355\u6349\u8bed\u4e49\u7684\u5411\u91cf\u8868\u793a\u6765\u5b9e\u73b0\u3002\u6df7\u5408\u641c\u7d22\u5c06\u8bcd\u6cd5\u68c0\u7d22\u4e0e\u8bed\u4e49\u68c0\u7d22\u7ed3\u5408\u8d77\u6765&#xff0c;\u800c\u8bed\u4e49\u68c0\u7d22\u65e2\u53ef\u4ee5\u4f7f\u7528\u7a20\u5bc6\u6a21\u578b&#xff0c;\u4e5f\u53ef\u4ee5\u4f7f\u7528\u7a00\u758f\u6a21\u578b\u3002<\/p>\n<\/p>\n<h3>\u7a20\u5bc6\u5411\u91cf<\/h3>\n<p>\u7a20\u5bc6\u5411\u91cf\u662f\u7531 BERT \u7b49\u6a21\u578b\u751f\u6210\u7684\u56fa\u5b9a\u957f\u5ea6\u6570\u5b57\u6570\u7ec4&#xff0c;\u5176\u4e2d\u8bed\u4e49\u76f8\u4f3c\u7684\u8f93\u5165&#xff08;\u4f8b\u5982 cat \u548c kitten&#xff09;\u5728\u5411\u91cf\u7a7a\u95f4\u4e2d\u7684\u8ddd\u79bb\u66f4\u8fd1&#xff0c;\u56e0\u6b64\u975e\u5e38\u9002\u5408\u8bed\u4e49\u5339\u914d\u3001\u63a8\u8350\u548c\u76f8\u4f3c\u5ea6\u641c\u7d22\u3002<\/p>\n<p>\u5f53\u6587\u672c\u88ab\u8f6c\u6362\u4e3a\u7a20\u5bc6\u5411\u91cf\u540e&#xff0c;\u5176\u5f62\u5f0f\u5982\u4e0b&#xff1a;<\/p>\n<p>[<br \/>\n  0.13586345314979553,<br \/>\n  -0.6291824579238892,<br \/>\n  0.32779985666275024,<br \/>\n  0.36690405011177063,<br \/>\n  &#8230;<br \/>\n] <\/p>\n<p>\u6bcf\u4e2a\u7ef4\u5ea6\u90fd\u5305\u542b\u6709\u610f\u4e49\u7684\u4fe1\u606f&#xff0c;\u4f7f\u5f97\u5411\u91cf\u4e2d\u5145\u6ee1\u6570\u636e\u3002\u8bed\u4e49\u76f8\u4f3c\u7684\u5185\u5bb9\u4f1a\u751f\u6210\u5728\u5411\u91cf\u7a7a\u95f4\u4e2d\u5f7c\u6b64\u63a5\u8fd1\u7684 embedding\u3002<\/p>\n<p>\u5728 Elasticsearch \u4e2d&#xff0c;\u7a20\u5bc6\u5411\u91cf\u5b58\u50a8\u5728 dense_vector \u5b57\u6bb5\u4e2d&#xff0c;\u5e76\u4f7f\u7528 HNSW \u7b49\u8fd1\u4f3c\u6700\u8fd1\u90bb&#xff08;ANN&#xff09;\u7b97\u6cd5\u8fdb\u884c\u67e5\u8be2\u3002\u8fd9\u975e\u5e38\u9002\u5408\u6355\u6349\u6587\u672c\u3001\u56fe\u50cf\u6216\u5176\u4ed6\u5185\u5bb9\u7684\u6574\u4f53\u8bed\u4e49\u3002<\/p>\n<p>POST my-index\/_search<br \/>\n{<br \/>\n  &#034;retriever&#034;: {<br \/>\n    &#034;rrf&#034;: {<br \/>\n      &#034;retrievers&#034;: [<br \/>\n        {<br \/>\n          &#034;standard&#034;: {<br \/>\n            &#034;query&#034;: {<br \/>\n              &#034;match&#034;: {<br \/>\n                &#034;text_field&#034;: &#034;fox&#034;<br \/>\n              }<br \/>\n            }<br \/>\n          }<br \/>\n        },<br \/>\n        {<br \/>\n          &#034;knn&#034;: {<br \/>\n            &#034;field&#034;: &#034;title_vector&#034;,<br \/>\n            &#034;query_vector&#034;: [0.1, 3.2, 2.1],<br \/>\n            &#034;k&#034;: 5,<br \/>\n            &#034;num_candidates&#034;: 100<br \/>\n          }<br \/>\n        }<br \/>\n      ]<br \/>\n    }<br \/>\n  }<br \/>\n} <\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a ES|QL \u793a\u4f8b&#xff1a;<\/p>\n<p>FROM my-index METADATA _score<br \/>\n| FORK ( WHERE match(text_field:&#034;fox&#034;) | SORT _score DESC | LIMIT 5)<br \/>\n       ( WHERE knn(image_vector, [0.1, 3.2, 2.1], { &#034;min_candidates&#034; : 100 }) | SORT _score DESC | LIMIT 5 )<br \/>\n| FUSE<br \/>\n| SORT _score DESC <\/p>\n<p>\u5982\u4e0a\u6240\u793a&#xff0c;\u4e00\u4e2a\u6df7\u5408\u641c\u7d22\u67e5\u8be2\u53ea\u9700\u4f7f\u7528 rrf retriever&#xff0c;\u5c06\u901a\u8fc7\u6807\u51c6 retriever \u6267\u884c\u7684\u8bcd\u6cd5\u641c\u7d22\u67e5\u8be2&#xff08;\u4f8b\u5982 match \u67e5\u8be2&#xff09;\u4e0e knn retriever \u4e2d\u6307\u5b9a\u7684\u5411\u91cf\u641c\u7d22\u67e5\u8be2\u7ed3\u5408\u8d77\u6765\u5373\u53ef\u3002<\/p>\n<p>\u8be5\u67e5\u8be2\u9996\u5148\u5728\u5168\u5c40\u8303\u56f4\u5185\u68c0\u7d22\u6392\u540d\u524d\u4e94\u7684\u5411\u91cf\u5339\u914d\u7ed3\u679c&#xff0c;\u7136\u540e\u5c06\u5b83\u4eec\u4e0e\u8bcd\u6cd5\u641c\u7d22\u5339\u914d\u7ed3\u679c\u8fdb\u884c\u878d\u5408&#xff0c;\u6700\u540e\u8fd4\u56de\u6700\u5339\u914d\u7684 10 \u4e2a\u7ed3\u679c\u3002<\/p>\n<p>rrf retriever \u4f7f\u7528 RRF \u6392\u540d\u65b9\u6cd5\u6765\u878d\u5408\u5411\u91cf\u641c\u7d22\u548c\u8bcd\u6cd5\u641c\u7d22\u7684\u5339\u914d\u7ed3\u679c\u3002<\/p>\n<\/p>\n<h3>\u7406\u89e3\u7a00\u758f\u5411\u91cf\u548c ELSER<\/h3>\n<p>\u7a20\u5bc6 embedding \u5e76\u4e0d\u662f\u5b9e\u73b0\u8bed\u4e49\u641c\u7d22\u7684\u552f\u4e00\u65b9\u5f0f\u3002<\/p>\n<p>\u7a00\u758f\u5411\u91cf\u5927\u90e8\u5206\u7ef4\u5ea6\u90fd\u662f\u96f6&#xff0c;\u53ea\u6709\u5c11\u6570\u5e26\u6743\u91cd\u7684\u503c\u4e0e\u53ef\u89e3\u91ca\u7684\u8bcd\u8bed\u76f8\u5173\u8054&#xff0c;\u56e0\u6b64\u5177\u6709\u8d44\u6e90\u6548\u7387\u9ad8\u3001\u53ef\u89e3\u91ca\u6027\u5f3a\u4ee5\u53ca\u5728 zero-shot \u573a\u666f\u4e0b\u6548\u679c\u826f\u597d\u7b49\u7279\u70b9\u3002<\/p>\n<p>\u7a00\u758f\u5411\u91cf\u7684\u8868\u793a\u5f62\u5f0f\u5982\u4e0b&#xff1a;<\/p>\n<p>{&#034;f1&#034;:1.2,&#034;f2&#034;:0.3,\u2026}<\/p>\n<p>\u5728 Elasticsearch \u4e2d&#xff0c;Elastic Learned Sparse EncodeR&#xff08;ELSER&#xff09;\u662f\u4e00\u79cd\u57df\u5916\u7a00\u758f\u81ea\u7136\u8bed\u8a00\u5904\u7406&#xff08;NLP&#xff09;\u6a21\u578b&#xff0c;\u5b83\u4f1a\u5c06\u6587\u672c\u6269\u5c55\u4e3a\u8bed\u4e49\u76f8\u5173\u7684\u8bcd\u8bed\u5e76\u4e3a\u8fd9\u4e9b\u8bcd\u8bed\u5206\u914d\u6743\u91cd&#xff0c;\u4ece\u800c\u5728\u4fdd\u7559\u53ef\u89e3\u91ca\u6027\u7684\u540c\u65f6&#xff0c;\u5b9e\u73b0\u8d85\u8d8a\u7cbe\u786e\u5173\u952e\u8bcd\u5339\u914d\u7684\u641c\u7d22\u3002<\/p>\n<p>\u6b64\u5916&#xff0c;semantic_text\u00a0\u5b57\u6bb5\u8ba9\u8bed\u4e49\u641c\u7d22\u50cf\u4f20\u7edf\u6587\u672c\u641c\u7d22\u4e00\u6837\u7b80\u5355&#xff0c;\u56e0\u4e3a\u5b83\u4f1a\u5728 ingest \u65f6\u81ea\u52a8\u5904\u7406 embedding \u751f\u6210\u548c\u63a8\u7406\u3002\u4f60\u53ef\u4ee5\u50cf\u7d22\u5f15 text \u5b57\u6bb5\u4e00\u6837\u7d22\u5f15\u6587\u6863&#xff0c;\u7136\u540e\u6267\u884c\u4e00\u4e2a\u7b80\u5355\u7684 match \u67e5\u8be2\u2014\u2014\u5373\u4f7f\u8de8\u7d22\u5f15\u67e5\u8be2\u65f6\u5b57\u6bb5\u7c7b\u578b\u4e0d\u540c&#xff0c;\u4e5f\u53ef\u4ee5\u540c\u65f6\u83b7\u5f97\u8bcd\u6cd5\u548c\u8bed\u4e49\u5339\u914d&#xff0c;\u800c\u65e0\u9700\u989d\u5916\u7684\u67e5\u8be2\u903b\u8f91\u3002\u5bf9\u4e8e\u66f4\u9ad8\u7ea7\u7684\u63a7\u5236&#xff0c;\u53ef\u4ee5\u5728\u540c\u4e00\u5b57\u6bb5\u4e0a\u4f7f\u7528 knn \u6216 sparse_vector \u67e5\u8be2\u3002<\/p>\n<p>\u4f7f\u7528 ELSER \u7684\u793a\u4f8b&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u57fa\u4e8e\u7ea6 30,000 \u4e2a\u8bcd\u8bed\u7684\u8bcd\u6c47\u8868\u8fdb\u884c\u9884\u8bad\u7ec3<\/p>\n<\/li>\n<li>\n<p>\u4ee5 sparse_vector&#xff08;\u8bcd\u8bed\/\u6743\u91cd\u5bf9&#xff09;\u7684\u5f62\u5f0f\u5b58\u50a8<\/p>\n<\/li>\n<li>\n<p>\u5728 ingest \u65f6\u901a\u8fc7 semantic_text \u81ea\u52a8\u751f\u6210&#xff0c;\u6216\u8005\u5728\u7d22\u5f15\u65f6\u901a\u8fc7 inference ingest processor \u751f\u6210<\/p>\n<\/li>\n<li>\n<p>\u901a\u8fc7\u5012\u6392\u7d22\u5f15\u8fdb\u884c\u67e5\u8be2&#xff08;\u7c7b\u4f3c\u8bcd\u6cd5\u641c\u7d22&#xff09;&#xff0c;\u56e0\u6b64\u5177\u6709\u9ad8\u6548\u3001\u6613\u4e8e\u8fc7\u6ee4\u4e14\u53ef\u89e3\u91ca\u7b49\u7279\u70b9<\/p>\n<\/li>\n<\/ul>\n<p>POST my-index\/_search<br \/>\n{<br \/>\n  &#034;retriever&#034;: {<br \/>\n    &#034;rrf&#034;: {<br \/>\n      &#034;retrievers&#034;: [<br \/>\n        {<br \/>\n          &#034;standard&#034;: {<br \/>\n            &#034;query&#034;: {<br \/>\n              &#034;match&#034;: {<br \/>\n                &#034;text_field&#034;: &#034;fox&#034;<br \/>\n              }<br \/>\n            }<br \/>\n          }<br \/>\n        },<br \/>\n        {<br \/>\n          &#034;standard&#034;: {<br \/>\n            &#034;query&#034;: {<br \/>\n              &#034;sparse_vector&#034;: {<br \/>\n                &#034;field&#034;: &#034;ml.tokens&#034;,<br \/>\n                &#034;inference_id&#034;: &#034;.elser_model_1&#034;,<br \/>\n                &#034;query&#034;: &#034;a quick brown fox jumps over a lazy dog&#034;<br \/>\n              }<br \/>\n            }<br \/>\n          }<br \/>\n        }<br \/>\n      ]<br \/>\n    }<br \/>\n  }<br \/>\n} <\/p>\n<p>\u7a20\u5bc6\u5411\u91cf\u548c\u7a00\u758f\u5411\u91cf\u7ed3\u5408\u8d77\u6765\u53ef\u4ee5\u63d0\u4f9b\u66f4\u5927\u7684\u7075\u6d3b\u6027&#xff1a;\u7a20\u5bc6\u5411\u91cf\u64c5\u957f\u6355\u6349\u7ec6\u5fae\u7684\u8bed\u4e49&#xff0c;\u800c\u7a00\u758f\u5411\u91cf\u5219\u80fd\u591f\u4e3a\u5b9e\u9645\u751f\u4ea7\u73af\u5883\u4e2d\u7684\u641c\u7d22\u63d0\u4f9b\u66f4\u9ad8\u7684\u900f\u660e\u5ea6\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n<p>\u4e86\u89e3\u4f7f\u7528 ELSER \u8fdb\u884c\u6587\u672c\u6269\u5c55\u5982\u4f55\u5e2e\u52a9\u4f60\u83b7\u5f97\u66f4\u597d\u7684\u641c\u7d22\u7ed3\u679c&#xff1a;<\/p>\n<p>  <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"544\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260815232515-6a80f55b0e732.png\" width=\"1000\" \/> <\/p>\n<p>   https:\/\/www.bilibili.com\/video\/BV1R3bC6REB4\/<\/p>\n<h3>\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u7a00\u758f\u5411\u91cf\u4e0e\u7a20\u5bc6\u5411\u91cf<\/h3>\n<table>\n<tr>\u7a00\u758f\u5411\u91cf&#xff08;ELSER&#xff09;\u7a20\u5bc6\u5411\u91cf<\/tr>\n<tbody>\n<tr>\n<td>\u5de5\u4f5c\u539f\u7406<\/td>\n<td>\u5c06\u6587\u672c\u6269\u5c55\u4e3a\u8bed\u4e49\u76f8\u5173\u7684\u3001\u5e26\u6743\u91cd\u7684\u8bcd\u8bed\u3002\u6bcf\u4e2a\u7ef4\u5ea6\u5bf9\u5e94\u4e00\u4e2a token&#xff0c;\u5e76\u5e26\u6709\u76f8\u5e94\u7684\u6743\u91cd\u3002<\/td>\n<td>\u5c06\u5185\u5bb9&#xff08;\u6587\u672c\u3001\u56fe\u50cf\u7b49&#xff09;\u7f16\u7801\u4e3a\u56fa\u5b9a\u957f\u5ea6\u7684\u6d6e\u70b9\u5411\u91cf\u3002\u8bed\u4e49\u8d8a\u76f8\u4f3c&#xff0c;\u5728\u5411\u91cf\u7a7a\u95f4\u4e2d\u7684\u4f4d\u7f6e\u8d8a\u63a5\u8fd1\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u4f18\u52bf<\/td>\n<td>\u2022 \u7ed3\u679c\u53ef\u89e3\u91ca&#xff08;\u8bcd\u8bed &#043; \u6743\u91cd&#xff09;\u2022 \u4e0e\u5173\u952e\u8bcd\u76f8\u5173\u6027\u81ea\u7136\u7ed3\u5408\u2022 \u975e\u5e38\u9002\u5408\u9886\u57df\u7279\u5b9a\u8bcd\u6c47<\/td>\n<td>\u2022 \u80fd\u591f\u6355\u6349\u6df1\u5c42\u8bed\u4e49\u2022 \u652f\u6301\u591a\u6a21\u6001&#xff08;\u6587\u672c\u3001\u56fe\u50cf\u3001\u97f3\u9891&#xff09;\u2022 \u64c5\u957f\u81ea\u7136\u8bed\u8a00\u548c\u76f8\u4f3c\u5ea6\u5339\u914d<\/td>\n<\/tr>\n<tr>\n<td>\u5178\u578b\u4f7f\u7528\u573a\u666f<\/td>\n<td>\u2022 \u901a\u8fc7\u6587\u672c\u6269\u5c55\u589e\u5f3a\u5173\u952e\u8bcd\u641c\u7d22\u2022 \u5bf9\u5408\u89c4\u548c\u5ba1\u8ba1\u53cb\u597d\u7684\u4f01\u4e1a\u641c\u7d22\u2022 \u6280\u672f\u6216\u53d7\u76d1\u7ba1\u9886\u57df\u7684\u4e13\u4e1a\u641c\u7d22<\/td>\n<td>\u2022 \u5c06\u81ea\u7136\u8bed\u8a00\u95ee\u9898\u4e0e\u7b54\u6848\u8fdb\u884c\u5339\u914d\u2022 \u56fe\u50cf\u6216\u591a\u5a92\u4f53\u76f8\u4f3c\u5ea6\u641c\u7d22\u2022 \u57fa\u4e8e\u5185\u5bb9\u7684\u63a8\u8350<\/td>\n<\/tr>\n<tr>\n<td>\u7406\u60f3\u573a\u666f<\/td>\n<td>\u5f53\u4f60\u9700\u8981\u63d0\u5347\u8bed\u4e49\u80fd\u529b\u548c\u900f\u660e\u5ea6&#xff0c;\u6216\u8005\u9886\u57df\u7279\u5b9a\u8bcd\u8bed\u6700\u91cd\u8981\u65f6<\/td>\n<td>\u5f53\u4f60\u9700\u8981\u6355\u6349\u6df1\u5c42\u8bed\u4e49\u3001\u81ea\u7136\u8bed\u8a00\u610f\u56fe\u6216\u8de8\u6a21\u6001\u76f8\u4f3c\u6027\u65f6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u4f7f\u7528\u7a20\u5bc6\u548c\u7a00\u758f\u6a21\u578b\u8fdb\u884c\u6df7\u5408\u641c\u7d22<\/h3>\n<p>\u5230\u76ee\u524d\u4e3a\u6b62&#xff0c;\u6211\u4eec\u5df2\u7ecf\u4e86\u89e3\u4e86\u4e24\u79cd\u4e0d\u540c\u7684\u6df7\u5408\u641c\u7d22\u65b9\u5f0f&#xff0c;\u5177\u4f53\u53d6\u51b3\u4e8e\u641c\u7d22\u7684\u662f\u7a20\u5bc6\u5411\u91cf\u7a7a\u95f4\u8fd8\u662f\u7a00\u758f\u5411\u91cf\u7a7a\u95f4\u3002\u6211\u4eec\u4e5f\u53ef\u4ee5\u5728\u540c\u4e00\u4e2a\u7d22\u5f15\u4e2d\u540c\u65f6\u6df7\u5408\u7a20\u5bc6\u6570\u636e\u548c\u7a00\u758f\u6570\u636e\u3002<\/p>\n<p>POST my-index\/_search<br \/>\n{<br \/>\n  &#034;_source&#034;: false,<br \/>\n  &#034;fields&#034;: [ &#034;text_field&#034; ],<br \/>\n  &#034;retriever&#034;: {<br \/>\n    &#034;rrf&#034;: {<br \/>\n      &#034;retrievers&#034;: [<br \/>\n        {<br \/>\n          &#034;knn&#034;: {<br \/>\n            &#034;field&#034;: &#034;image_vector&#034;,<br \/>\n            &#034;query_vector&#034;: [0.1, 3.2, &#8230;, 2.1],<br \/>\n            &#034;k&#034;: 5,<br \/>\n            &#034;num_candidates&#034;: 100<br \/>\n          }<br \/>\n        },<br \/>\n        {<br \/>\n          &#034;standard&#034;: {<br \/>\n            &#034;query&#034;: {<br \/>\n              &#034;sparse_vector&#034;: {<br \/>\n                &#034;field&#034;: &#034;ml.tokens&#034;,<br \/>\n                &#034;inference_id&#034;: &#034;.elser_model_1&#034;,<br \/>\n                &#034;query&#034;: &#034;a quick brown fox jumps over a lazy dog&#034;<br \/>\n              }<br \/>\n            }<br \/>\n          }<br \/>\n        }<br \/>\n      ]<br \/>\n    }<br \/>\n  }<br \/>\n} <\/p>\n<h3>\u8fdb\u4e00\u6b65\u63a2\u7d22&#xff1a;\u7ed3\u5408\u7a20\u5bc6\u5411\u91cf\u3001\u7a00\u758f\u5411\u91cf\u548c BM25F \u7684\u6df7\u5408\u641c\u7d22<\/h3>\n<p>\u8fd9\u4e2a\u793a\u4f8b\u7ed3\u5408\u4e86\u4e09\u79cd retriever&#xff0c;\u5e76\u4f7f\u7528 RRF \u878d\u5408\u5b83\u4eec\u7684\u6392\u5e8f\u5217\u8868&#xff1a;<\/p>\n<ul>\n<li>\n<p>BM25F&#xff08;\u5728 text \u4e0a\u6267\u884c match&#xff09;&#xff1a;\u7cbe\u51c6\u5339\u914d\u5173\u952e\u8bcd\u6216\u77ed\u8bed&#xff0c;\u4f8b\u5982\u201csnowy mountain\u201d<\/p>\n<\/li>\n<li>\n<p>kNN&#xff08;image_vector&#xff09;&#xff1a;\u4f7f\u7528\u63d0\u4f9b\u7684\u56fe\u50cf embedding \u8fdb\u884c\u89c6\u89c9\u76f8\u4f3c\u5ea6\u641c\u7d22&#xff0c;\u4ece num_candidates \u4e2d\u83b7\u53d6 k \u4e2a\u7ed3\u679c<\/p>\n<\/li>\n<li>\n<p>Semantic&#xff08;semantic_text&#xff09;&#xff1a;\u901a\u8fc7\u5bf9\u67e5\u8be2\u8fdb\u884c\u8bed\u4e49\u6269\u5c55\u6765\u5339\u914d\u6982\u5ff5<\/p>\n<\/li>\n<\/ul>\n<p>rank_window_size \u63a7\u5236\u53c2\u4e0e\u878d\u5408\u7684\u7ed3\u679c\u6570\u91cf&#xff1b;rank_constant \u7528\u4e8e\u5e73\u8861\u6bcf\u4e2a\u7ed3\u679c\u5217\u8868\u7684\u8d21\u732e\u3002<\/p>\n<p>GET my-index\/_search<br \/>\n{<br \/>\n  &#034;retriever&#034;: {<br \/>\n    &#034;rrf&#034;: {<br \/>\n      &#034;retrievers&#034;: [<br \/>\n        {<br \/>\n          &#034;standard&#034;: {<br \/>\n            &#034;query&#034;: {<br \/>\n              &#034;match&#034;: {<br \/>\n                &#034;text&#034;: {<br \/>\n                  &#034;query&#034;: &#034;snowy mountain&#034;<br \/>\n                }<br \/>\n              }<br \/>\n            }<br \/>\n          }<br \/>\n        },<br \/>\n        {<br \/>\n          &#034;knn&#034;: {<br \/>\n            &#034;field&#034;: &#034;image_vector&#034;,<br \/>\n            &#034;query_vector&#034;: [<br \/>\n              0.01,<br \/>\n              0.3,<br \/>\n              -0.4<br \/>\n            ],<br \/>\n            &#034;k&#034;: 10,<br \/>\n            &#034;num_candidates&#034;: 100<br \/>\n          }<br \/>\n        },<br \/>\n        {<br \/>\n          &#034;standard&#034;: {<br \/>\n            &#034;query&#034;: {<br \/>\n              &#034;semantic&#034;: {<br \/>\n                &#034;field&#034;: &#034;semantic_text&#034;,<br \/>\n                &#034;query&#034;: &#034;snowy mountain&#034;<br \/>\n              }<br \/>\n            }<br \/>\n          }<br \/>\n        }<br \/>\n      ],<br \/>\n      &#034;rank_window_size&#034;: 50,<br \/>\n      &#034;rank_constant&#034;: 60<br \/>\n    }<br \/>\n  }<br \/>\n} <\/p>\n<p>\u8ba9\u6211\u4eec\u518d\u6765\u770b\u4e00\u4e2a\u7c7b\u4f3c\u7684 ES|QL \u793a\u4f8b&#xff1a;<\/p>\n<p>FROM my-index METADATA _score<br \/>\n| FORK (WHERE match(text, &#034;snowy mountain&#034;) | SORT _score DESC | LIMIT 50)<br \/>\n       (WHERE knn(image_vector, [0.01, 0.3, -0.4], {&#034;min_candidates&#034;: 100 }) | SORT _score DESC | LIMIT 50)<br \/>\n       (WHERE match(semantic_text, &#034;snowy mountain&#034;) | SORT _score DESC | LIMIT 50)<br \/>\n| FUSE RRF WITH {&#034;rank_constant&#034;: 60 } \/\/ 60 is the default anyway?<br \/>\n| SORT _score DESC<br \/>\n| LIMIT 50 <\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u6df7\u5408\u641c\u7d22\u5c06\u5168\u6587\u641c\u7d22\u7684\u7cbe\u51c6\u6027\u4e0e\u8bed\u4e49\u641c\u7d22\u7684\u4e0a\u4e0b\u6587\u7406\u89e3\u80fd\u529b\u7ed3\u5408\u8d77\u6765&#xff0c;\u4ece\u800c\u80fd\u591f\u9488\u5bf9\u4e0d\u540c\u7c7b\u578b\u7684\u5185\u5bb9\u63d0\u4f9b\u66f4\u52a0\u51c6\u786e\u3001\u76f8\u5173\u7684\u7ed3\u679c\u3002\u901a\u8fc7\u540c\u65f6\u652f\u6301\u7a20\u5bc6\u548c\u7a00\u758f\u6a21\u578b&#xff0c;\u4ee5\u53ca\u7ebf\u6027\u7ec4\u5408\u548c\u5012\u6570\u6392\u540d\u878d\u5408\u7b49\u7075\u6d3b\u7684\u878d\u5408\u65b9\u6cd5&#xff0c;\u4f60\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u4f7f\u7528\u573a\u666f\u5b9a\u5236\u68c0\u7d22\u65b9\u5f0f\u2014\u2014\u65e0\u8bba\u662f\u76f4\u63a5\u7ec4\u5408\u67e5\u8be2\u548c\u5411\u91cf&#xff0c;\u8fd8\u662f\u4f7f\u7528 retriever \u7b80\u5316\u591a\u9636\u6bb5\u68c0\u7d22\u3002\u8fd9\u79cd\u7075\u6d3b\u6027\u4f7f\u6df7\u5408\u641c\u7d22\u6210\u4e3a\u5904\u7406\u590d\u6742\u67e5\u8be2\u3001\u591a\u6837\u5316\u6570\u636e\u4ee5\u53ca\u9ad8\u76f8\u5173\u6027\u8981\u6c42\u7684\u5f3a\u5927\u65b9\u6cd5\u3002<\/p>\n<p>\u8fdb\u4e00\u6b65\u4e86\u89e3\u6df7\u5408\u641c\u7d22&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u9605\u8bfb\u8fd9\u7bc7\u535a\u5ba2&#xff0c;\u4e86\u89e3\u4ec0\u4e48\u662f\u6df7\u5408\u641c\u7d22\u3001Elasticsearch \u652f\u6301\u54ea\u4e9b\u67e5\u8be2\u7c7b\u578b&#xff0c;\u4ee5\u53ca\u5982\u4f55\u6784\u5efa\u6df7\u5408\u641c\u7d22\u3002<\/p>\n<\/li>\n<li>\n<p>You know, for context \u2014 \u6df7\u5408\u641c\u7d22\u4e0e\u4e0a\u4e0b\u6587\u5de5\u7a0b\u7684\u6f14\u8fdb<\/p>\n<\/li>\n<li>\n<p>ES|QL \u4e2d\u7684\u6df7\u5408\u641c\u7d22\u548c\u591a\u9636\u6bb5\u68c0\u7d22<\/p>\n<\/li>\n<li>\n<p>\u6df7\u5408\u641c\u7d22\u4e0d\u518d\u4ee4\u4eba\u5934\u75bc&#xff1a;\u4f7f\u7528 retriever \u7b80\u5316 Elasticsearch \u4e2d\u7684\u6df7\u5408\u641c\u7d22<\/p>\n<\/li>\n<\/ul>\n<p>\u60f3\u8981\u8d85\u8d8a\u5411\u91cf\u641c\u7d22&#xff1f;\u53ef\u4ee5\u4e86\u89e3 Elasticsearch \u4e2d\u7684\u4f7f\u7528 LLM agents \u5b9e\u73b0\u667a\u80fd\u6df7\u5408\u641c\u7d22\u3002<\/p>\n<p>\u51c6\u5907\u52a8\u624b\u5b9e\u8df5\u4e86\u5417&#xff1f;\u53ef\u4ee5\u6309\u7167\u6211\u4eec\u7684\u6df7\u5408\u641c\u7d22\u6559\u7a0b&#xff0c;\u5c06\u5168\u6587\u641c\u7d22\u548c kNN \u7ed3\u679c\u7ed3\u5408\u8d77\u6765&#xff1b;\u6216\u8005\u5c1d\u8bd5ES|QL \u6559\u7a0b&#xff0c;\u4f7f\u7528 ES|QL \u8fdb\u884c\u641c\u7d22\u548c\u8fc7\u6ee4\u3002<\/p>\n<\/p>\n<p>\u539f\u6587&#xff1a;What is hybrid search? 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