{"id":2803,"date":"2026-10-07T11:21:19","date_gmt":"2026-10-07T03:21:19","guid":{"rendered":"https:\/\/maxaeo.cn\/blog\/rag-knowledge-weight\/"},"modified":"2026-10-09T17:34:46","modified_gmt":"2026-10-09T09:34:46","slug":"rag-knowledge-weight","status":"publish","type":"post","link":"https:\/\/maxaeo.cn\/blog\/rag-knowledge-weight\/","title":{"rendered":"RAG\u68c0\u7d22\u589e\u5f3a\u77e5\u8bc6\u5e93\u6743\u91cd\u7b97\u6cd5\uff1a\u4ece\u5411\u91cf\u53ec\u56de\u5230\u4fe1\u6e90\u91cd\u6392"},"content":{"rendered":"

\u4f5c\u8005\uff1amaxaeo.cn\uff5c\u53d1\u5e03\u65e5\u671f\uff1a2026-10-07\uff5c\u66f4\u65b0\u65e5\u671f\uff1a2026-10-07<\/em><\/p>\n

RAG\u68c0\u7d22\u589e\u5f3a\u77e5\u8bc6\u5e93\u6743\u91cd\u7b97\u6cd5<\/strong>\u4e0d\u662f\u4e00\u4e2a\u56fa\u5b9a\u516c\u5f0f\uff0c\u800c\u662f\u4e00\u5957\u5206\u5c42\u6253\u5206\u673a\u5236\uff1a\u5148\u7528\u5173\u952e\u8bcd\u548c\u5411\u91cf\u68c0\u7d22\u6269\u5927\u53ec\u56de\uff0c\u518d\u878d\u5408\u4e0d\u540c\u6392\u540d\uff0c\u6700\u540e\u4f9d\u636e\u8bed\u4e49\u76f8\u5173\u6027\u3001\u4fe1\u6e90\u6743\u5a01\u5ea6\u3001\u65f6\u6548\u6027\u4e0e\u8bc1\u636e\u5b8c\u6574\u5ea6\u51b3\u5b9a\u54ea\u4e9b\u5185\u5bb9\u8fdb\u5165\u5927\u6a21\u578b\u4e0a\u4e0b\u6587\u3002<\/p>\n

\"RAG\u68c0\u7d22\u589e\u5f3a\u77e5\u8bc6\u5e93\u6743\u91cd\u7b97\u6cd5\u5206\u5c42\u8bc4\u5206\u6d41\u7a0b\"<\/figure>\n

\u4ec0\u4e48\u662fRAG\u77e5\u8bc6\u5e93\u6743\u91cd\uff1f<\/h2>\n

RAG\u77e5\u8bc6\u5e93\u6743\u91cd\u6307\u7cfb\u7edf\u5bf9\u68c0\u7d22\u901a\u9053\u3001\u6587\u6863\u6765\u6e90\u3001\u5b57\u6bb5\u3001\u5185\u5bb9\u5206\u5757\u53ca\u6392\u5e8f\u4fe1\u53f7<\/strong>\u8d4b\u4e88\u7684\u76f8\u5bf9\u5f71\u54cd\u7cfb\u6570\u3002\u5b83\u89e3\u51b3\u7684\u4e0d\u662f\u201c\u54ea\u4e2a\u77e5\u8bc6\u5e93\u7edd\u5bf9\u66f4\u91cd\u8981\u201d\uff0c\u800c\u662f\u201c\u9488\u5bf9\u5f53\u524d\u95ee\u9898\uff0c\u54ea\u7ec4\u8bc1\u636e\u66f4\u503c\u5f97\u4f18\u5148\u8fdb\u5165\u4e0a\u4e0b\u6587\u201d\u3002<\/p>\n

\u4e00\u4e2a\u5b8c\u6574\u6743\u91cd\u7cfb\u7edf\u901a\u5e38\u5305\u542b\u516d\u5c42\uff1a<\/p>\n

    \n
  1. \u51c6\u5165\u6743\u91cd<\/strong>\uff1a\u6743\u9650\u3001\u79df\u6237\u3001\u8bed\u8a00\u548c\u4e1a\u52a1\u8303\u56f4\u662f\u5426\u5339\u914d\u3002<\/li>\n
  2. \u53ec\u56de\u6743\u91cd<\/strong>\uff1aBM25\u3001\u7a20\u5bc6\u5411\u91cf\u3001\u77e5\u8bc6\u56fe\u8c31\u7b49\u901a\u9053\u5360\u6bd4\u3002<\/li>\n
  3. \u878d\u5408\u6743\u91cd<\/strong>\uff1a\u5408\u5e76\u4e0d\u540c\u68c0\u7d22\u5668\u4ea7\u751f\u7684\u5019\u9009\u6392\u540d\u3002<\/li>\n
  4. \u91cd\u6392\u6743\u91cd<\/strong>\uff1a\u7528\u4ea4\u53c9\u7f16\u7801\u5668\u91cd\u65b0\u5224\u65ad\u95ee\u9898\u4e0e\u7247\u6bb5\u7684\u76f8\u5173\u6027\u3002<\/li>\n
  5. \u4fe1\u6e90\u6743\u91cd<\/strong>\uff1a\u8bc4\u4ef7\u6765\u6e90\u6743\u5a01\u5ea6\u3001\u65f6\u6548\u6027\u548c\u4e00\u81f4\u6027\u3002<\/li>\n
  6. \u9884\u7b97\u6743\u91cd<\/strong>\uff1a\u51b3\u5b9a\u6bcf\u4e2a\u6765\u6e90\u53ef\u5360\u7528\u591a\u5c11\u4e0a\u4e0b\u6587Token\u3002<\/li>\n<\/ol>\n

    \u5411\u91cf\u68c0\u7d22\u4e0eBM25\u4e3a\u4ec0\u4e48\u4e0d\u80fd\u76f4\u63a5\u76f8\u52a0\uff1f<\/h2>\n

    \u4e8c\u8005\u5206\u6570\u7a7a\u95f4\u4e0d\u540c\uff0c\u672a\u7ecf\u6821\u51c6\u76f4\u63a5\u76f8\u52a0\u4f1a\u9020\u6210\u865a\u5047\u6743\u91cd<\/strong>\u3002BM25\u5206\u6570\u901a\u5e38\u6ca1\u6709\u56fa\u5b9a\u4e0a\u9650\uff0c\u4f59\u5f26\u76f8\u4f3c\u5ea6\u5219\u5904\u4e8e\u6709\u9650\u533a\u95f4\uff1b\u5373\u4f7f\u6570\u503c\u76f8\u540c\uff0c\u4e5f\u4e0d\u4ee3\u8868\u76f8\u5173\u7a0b\u5ea6\u76f8\u540c\u3002<\/p>\n

    \u5e38\u89c1\u878d\u5408\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n

    \n\n\n\n\n\n\n\n\n
    \u65b9\u6cd5<\/th>\n\u8ba1\u7b97\u903b\u8f91<\/th>\n\u9002\u7528\u60c5\u51b5<\/th>\n\u4e3b\u8981\u98ce\u9669<\/th>\n<\/tr>\n<\/thead>\n
    \u5f52\u4e00\u5316\u52a0\u6743<\/td>\n\u03b1\u00d7\u5411\u91cf\u5206\u6570+(1-\u03b1)\u00d7BM25\u5206\u6570<\/code><\/td>\n\u5206\u6570\u5206\u5e03\u7a33\u5b9a<\/td>\n\u6781\u503c\u4f1a\u6539\u53d8\u5f52\u4e00\u5316\u7ed3\u679c<\/td>\n<\/tr>\n
    RRF\u878d\u5408<\/td>\n\u6309\u5404\u901a\u9053\u6392\u540d\u5012\u6570\u6c42\u548c<\/td>\n\u591a\u68c0\u7d22\u5668\u3001\u5206\u6570\u4e0d\u53ef\u6bd4<\/td>\n\u96be\u8868\u8fbe\u590d\u6742\u4e1a\u52a1\u504f\u597d<\/td>\n<\/tr>\n
    \u5b66\u4e60\u6392\u5e8f<\/td>\n\u4ece\u4eba\u5de5\u6807\u7b7e\u5b66\u4e60\u6743\u91cd<\/td>\n\u67e5\u8be2\u91cf\u5927\u3001\u5df2\u6709\u6807\u6ce8<\/td>\n\u8bad\u7ec3\u4e0e\u7ef4\u62a4\u6210\u672c\u8f83\u9ad8<\/td>\n<\/tr>\n
    \u7ea7\u8054\u68c0\u7d22<\/td>\n\u5bbd\u53ec\u56de\u540e\u6a21\u578b\u91cd\u6392<\/td>\n\u51c6\u786e\u7387\u4f18\u5148<\/td>\n\u5ef6\u8fdf\u548c\u7b97\u529b\u6210\u672c\u8f83\u9ad8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    RRF\u5e38\u7528\u516c\u5f0f\u4e3a\uff1a<\/p>\n

    RRF(d)=\u03a3[w\u1d62\/(k+rank\u1d62(d))]<\/code><\/p>\n

    \u5176\u4e2d\uff0crank\u1d62(d)<\/code>\u662f\u6587\u6863\u5728\u7b2ci<\/code>\u6761\u68c0\u7d22\u901a\u9053\u4e2d\u7684\u540d\u6b21\uff0cw\u1d62<\/code>\u662f\u901a\u9053\u6743\u91cd\u3002Elastic\u4e0eAzure\u7684\u5b98\u65b9\u6587\u6863\u5747\u91c7\u7528\u6309\u6392\u540d\u878d\u5408\u7684\u601d\u8def\uff1b\u5e38\u6570k<\/code>\u5e38\u53d660\uff0c\u4f46\u4e0d\u5e94\u88ab\u89c6\u4e3a\u6240\u6709\u6570\u636e\u96c6\u7684\u6700\u4f18\u503c\u3002(learn.microsoft.com<\/a>)<\/p>\n

    \u5982\u4f55\u8bbe\u8ba1\u53ef\u843d\u5730\u7684\u5206\u5c42\u6253\u5206\u516c\u5f0f\uff1f<\/h2>\n

    \u66f4\u7a33\u5065\u7684\u505a\u6cd5\u662f\u5c06\u53ec\u56de\u3001\u91cd\u6392\u548c\u4fe1\u6e90\u5224\u65ad\u5206\u5f00\u8ba1\u7b97\uff0c\u800c\u4e0d\u662f\u628a\u6240\u6709\u4fe1\u53f7\u585e\u8fdb\u4e00\u6b21\u7ebf\u6027\u52a0\u6743<\/strong>\u3002\u53ec\u56de\u9636\u6bb5\u8ffd\u6c42\u8986\u76d6\u7387\uff0c\u91cd\u6392\u9636\u6bb5\u8ffd\u6c42\u7cbe\u786e\u7387\uff0c\u4fe1\u6e90\u9636\u6bb5\u8d1f\u8d23\u63a7\u5236\u53ef\u4fe1\u5ea6\u4e0e\u53ef\u7528\u6027\u3002<\/p>\n

    \u53ef\u91c7\u7528\u4ee5\u4e0b\u4e24\u9636\u6bb5\u6846\u67b6\uff1a<\/p>\n

    \u5019\u9009\u878d\u5408\u5206 = \u52a0\u6743RRF\uff08BM25\u3001\u5411\u91cf\u3001\u5b9e\u4f53\u68c0\u7d22\uff09\n\u6700\u7ec8\u5206 = 0.55\u00d7\u91cd\u6392\u76f8\u5173\u6027\n       + 0.15\u00d7\u4fe1\u6e90\u6743\u5a01\u5ea6\n       + 0.10\u00d7\u65f6\u6548\u6027\n       + 0.10\u00d7\u7b54\u6848\u5b8c\u6574\u5ea6\n       + 0.10\u00d7\u591a\u6e90\u4e00\u81f4\u6027\n       - \u91cd\u590d\u60e9\u7f5a\n       - \u51b2\u7a81\u60e9\u7f5a\n<\/code><\/pre>\n
    \u8fd9\u4e9b\u7cfb\u6570\u662f\u51b7\u542f\u52a8\u57fa\u7ebf\uff0c\u800c\u975e\u884c\u4e1a\u6807\u51c6<\/strong>\u3002\u578b\u53f7\u3001\u9519\u8bef\u7801\u7b49\u7cbe\u786e\u67e5\u8be2\u5e94\u63d0\u9ad8BM25\u6743\u91cd\uff1b\u6982\u5ff5\u89e3\u91ca\u548c\u81ea\u7136\u8bed\u8a00\u95ee\u7b54\u53ef\u63d0\u9ad8\u5411\u91cf\u6743\u91cd\uff1b\u653f\u7b56\u3001\u4ef7\u683c\u548c\u4ea7\u54c1\u53c2\u6570\u5219\u5e94\u63d0\u9ad8\u65f6\u6548\u6027\u4e0e\u4fe1\u6e90\u6743\u91cd\u3002<\/p>\n
    \u4fe1\u6e90\u5c42\u7684\u5177\u4f53\u8bc4\u4f30\u65b9\u6cd5\uff0c\u53ef\u7ed3\u5408AI\u77e5\u8bc6\u5e93\u5f15\u7528\u6743\u5a01\u5ea6\u6253\u5206\u673a\u5236<\/a>\u4e0e\u5927\u6a21\u578b\u4fe1\u6e90\u4ea4\u53c9\u9a8c\u8bc1\u673a\u5236<\/a>\uff0c\u907f\u514d\u628a\u201c\u8bed\u4e49\u76f8\u4f3c\u201d\u8bef\u5224\u6210\u201c\u4e8b\u5b9e\u53ef\u4fe1\u201d\u3002<\/p>\n
    \"RAG\u6df7\u5408\u68c0\u7d22\u901a\u9053\u4e0e\u52a8\u6001\u6743\u91cd\u793a\u610f\u56fe\"<\/figure>\n
    \u4e00\u4e2a\u4e09\u6587\u6863\u6f14\u7b97\u8bf4\u660e\u4e86\u4ec0\u4e48\uff1f<\/h2>\n
    \u7eaf\u5411\u91cf\u7b2c\u4e00\u540d\u4e0d\u4e00\u5b9a\u662f\u6700\u7ec8\u6700\u4f18\u8bc1\u636e<\/strong>\u3002\u5047\u8bbe\u67e5\u8be2\u6d89\u53ca\u67d0\u9879\u4ea7\u54c1\u653f\u7b56\uff0c\u4e09\u4e2a\u5019\u9009\u7247\u6bb5\u7ecf\u8fc7\u91cd\u6392\u548c\u4fe1\u6e90\u8bc4\u4f30\u540e\u5f97\u5230\u4ee5\u4e0b\u5f52\u4e00\u5316\u5206\u6570\uff1a<\/p>\n
    \n\n\n\n\n\n\n\n
    \u7247\u6bb5<\/th>\n\u5411\u91cf\u76f8\u4f3c\u5ea6<\/th>\n\u91cd\u6392\u76f8\u5173\u6027<\/th>\n\u6743\u5a01\u5ea6<\/th>\n\u65f6\u6548\u6027<\/th>\n\u5b8c\u6574\u5ea6<\/th>\n\u4e00\u81f4\u6027<\/th>\n\u6700\u7ec8\u5206<\/th>\n<\/tr>\n<\/thead>\n
    \u5b98\u65b9\u8bf4\u660eA<\/td>\n0.88<\/td>\n0.91<\/td>\n0.95<\/td>\n0.70<\/td>\n0.90<\/td>\n0.90<\/td>\n0.893<\/td>\n<\/tr>\n
    \u65b0\u53d1\u5e03\u535a\u5ba2B<\/td>\n0.92<\/td>\n0.78<\/td>\n0.55<\/td>\n0.95<\/td>\n0.70<\/td>\n0.50<\/td>\n0.727<\/td>\n<\/tr>\n
    \u884c\u4e1a\u6587\u6863C<\/td>\n0.72<\/td>\n0.86<\/td>\n0.80<\/td>\n0.80<\/td>\n0.85<\/td>\n0.80<\/td>\n0.838<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
    \u8be5\u6f14\u7b97\u4f7f\u7528\u4e0a\u4e00\u8282\u516c\u5f0f\u3002\u7247\u6bb5B\u7684\u5411\u91cf\u5206\u6700\u9ad8\uff0c\u5374\u56e0\u6765\u6e90\u8f83\u5f31\u3001\u8bc1\u636e\u4e0d\u5b8c\u6574\u548c\u591a\u6e90\u4e00\u81f4\u6027\u8f83\u4f4e\u800c\u964d\u81f3\u7b2c\u4e09\uff1b\u8fd9\u8bf4\u660e\u5411\u91cf\u8ddd\u79bb\u9002\u5408\u627e\u5019\u9009\uff0c\u4e0d\u9002\u5408\u5355\u72ec\u51b3\u5b9a\u4e8b\u5b9e\u4f18\u5148\u7ea7<\/strong>\u3002<\/p>\n
    \u6743\u91cd\u5e94\u8be5\u600e\u6837\u968f\u67e5\u8be2\u52a8\u6001\u53d8\u5316\uff1f<\/h2>\n
    \u56fa\u5b9a\u6743\u91cd\u53ea\u9002\u5408\u57fa\u7ebf\u7cfb\u7edf\uff0c\u751f\u4ea7\u73af\u5883\u5e94\u5148\u8bc6\u522b\u67e5\u8be2\u610f\u56fe\uff0c\u518d\u9009\u62e9\u6743\u91cd\u6a21\u677f<\/strong>\u3002\u540c\u4e00\u77e5\u8bc6\u5e93\u5728\u4e0d\u540c\u95ee\u9898\u4e2d\u53ef\u80fd\u627f\u62c5\u4e8b\u5b9e\u6e90\u3001\u89e3\u91ca\u6e90\u6216\u8865\u5145\u6e90\uff0c\u4e0d\u80fd\u6c38\u4e45\u7ed1\u5b9a\u4e00\u4e2a\u5168\u5c40\u6743\u91cd\u3002<\/p>\n
    \u5efa\u8bae\u81f3\u5c11\u5efa\u7acb\u56db\u7c7b\u6a21\u677f\uff1a<\/p>\n