{"id":2535,"date":"2025-06-25T11:34:12","date_gmt":"2025-06-25T03:34:12","guid":{"rendered":"https:\/\/sanlangcode.com\/?p=2535"},"modified":"2025-06-25T11:34:12","modified_gmt":"2025-06-25T03:34:12","slug":"embedding%ef%bc%88%e5%b5%8c%e5%85%a5%ef%bc%89%e6%a8%a1%e5%9e%8b%e5%92%8c-reranker%ef%bc%88%e9%87%8d%e6%8e%92%e5%ba%8f%ef%bc%89%e6%a8%a1%e5%9e%8b%e7%9a%84%e5%ba%95%e5%b1%82%e5%8e%9f%e7%90%86%e5%92%8c","status":"publish","type":"post","link":"https:\/\/sanlangcode.com\/index.php\/2025\/06\/25\/embedding%ef%bc%88%e5%b5%8c%e5%85%a5%ef%bc%89%e6%a8%a1%e5%9e%8b%e5%92%8c-reranker%ef%bc%88%e9%87%8d%e6%8e%92%e5%ba%8f%ef%bc%89%e6%a8%a1%e5%9e%8b%e7%9a%84%e5%ba%95%e5%b1%82%e5%8e%9f%e7%90%86%e5%92%8c\/","title":{"rendered":"embedding\uff08\u5d4c\u5165\uff09\u6a21\u578b\u548c reranker\uff08\u91cd\u6392\u5e8f\uff09\u6a21\u578b\u7684\u5e95\u5c42\u539f\u7406\u548c\u6570\u636e\u5904\u7406\u793a\u4f8b"},"content":{"rendered":"\n<p> embedding\uff08\u5d4c\u5165\uff09\u6a21\u578b\u548c reranker\uff08\u91cd\u6392\u5e8f\uff09\u6a21\u578b\u7684\u5e95\u5c42\u539f\u7406\uff0c\u5e76\u7ed9\u51fa\u6570\u636e\u5904\u7406\u7684\u4f8b\u5b50\uff0c\u7406\u89e3\u5b83\u4eec\u5728\u4fe1\u606f\u68c0\u7d22\u6216\u95ee\u7b54\u7cfb\u7edf\u4e2d\u7684\u4f5c\u7528\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001Embedding\uff08\u5d4c\u5165\uff09\u6a21\u578b\u539f\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1.1 \u539f\u7406\u7b80\u4ecb<\/h3>\n\n\n\n<p>Embedding \u6a21\u578b\u7684\u6838\u5fc3\u76ee\u6807\u662f\u5c06\u6587\u672c\uff08\u5982\u53e5\u5b50\u3001\u6bb5\u843d\u3001\u6587\u6863\uff09\u8f6c\u6362\u4e3a\u4e00\u4e2a\u9ad8\u7ef4\u7a20\u5bc6\u5411\u91cf\uff08embedding vector\uff09\u3002\u8fd9\u4e2a\u5411\u91cf\u80fd\u591f\u6355\u6349\u6587\u672c\u7684\u8bed\u4e49\u4fe1\u606f\uff0c\u4f7f\u5f97\u8bed\u4e49\u76f8\u4f3c\u7684\u6587\u672c\u5728\u5411\u91cf\u7a7a\u95f4\u4e2d\u8ddd\u79bb\u66f4\u8fd1\u3002<\/p>\n\n\n\n<p>\u5e38\u89c1\u7684 embedding \u6a21\u578b\u6709\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Word2Vec\u3001GloVe\uff08\u8bcd\u7ea7\u522b\uff09<\/li>\n\n\n\n<li>BERT\u3001Sentence-BERT\u3001Qwen3-Embedding\uff08\u53e5\u5b50\/\u6bb5\u843d\u7ea7\u522b\uff09<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">1.2 \u5de5\u4f5c\u6d41\u7a0b<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u8f93\u5165\u6587\u672c<\/strong>\uff1a\u5982\u4e00\u53e5\u8bdd\u201c\u4eca\u5929\u5929\u6c14\u5f88\u597d\u201d\u3002<\/li>\n\n\n\n<li><strong>\u5206\u8bcd\/\u7f16\u7801<\/strong>\uff1a\u5c06\u6587\u672c\u8f6c\u4e3a\u6a21\u578b\u53ef\u5904\u7406\u7684 token\u3002<\/li>\n\n\n\n<li><strong>\u6a21\u578b\u524d\u5411\u4f20\u64ad<\/strong>\uff1a\u901a\u8fc7\u795e\u7ecf\u7f51\u7edc\uff08\u5982 Transformer\uff09\uff0c\u8f93\u51fa\u4e00\u4e2a\u5b9a\u957f\u7684\u5411\u91cf\uff08\u5982 768 \u7ef4\uff09\u3002<\/li>\n\n\n\n<li><strong>\u5411\u91cf\u5f52\u4e00\u5316<\/strong>\uff08\u53ef\u9009\uff09\uff1a\u6709\u65f6\u4f1a\u5bf9\u5411\u91cf\u505a\u5f52\u4e00\u5316\u5904\u7406\uff0c\u4fbf\u4e8e\u540e\u7eed\u76f8\u4f3c\u5ea6\u8ba1\u7b97\u3002<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">1.3 \u5e94\u7528\u573a\u666f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u68c0\u7d22\u7cfb\u7edf\uff1a\u5c06\u6240\u6709\u6587\u6863\u8f6c\u4e3a\u5411\u91cf\uff0c\u7528\u6237\u67e5\u8be2\u4e5f\u8f6c\u4e3a\u5411\u91cf\uff0c\u901a\u8fc7\u5411\u91cf\u76f8\u4f3c\u5ea6\uff08\u5982\u4f59\u5f26\u76f8\u4f3c\u5ea6\uff09\u68c0\u7d22\u6700\u76f8\u5173\u7684\u6587\u6863\u3002<\/li>\n\n\n\n<li>\u805a\u7c7b\u3001\u5206\u7c7b\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">1.4 \u6570\u636e\u5904\u7406\u4f8b\u5b50<\/h3>\n\n\n\n<p>\u5047\u8bbe\u6709\u5982\u4e0b\u6587\u672c\u6570\u636e\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6587\u6863ID<\/th><th>\u6587\u672c\u5185\u5bb9<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>\u4eca\u5929\u5929\u6c14\u5f88\u597d<\/td><\/tr><tr><td>2<\/td><td>\u6211\u559c\u6b22\u5403\u82f9\u679c<\/td><\/tr><tr><td>3<\/td><td>\u4eca\u5929\u5929\u6c14\u4e0d\u9519<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u5904\u7406\u6d41\u7a0b\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5bf9\u6bcf\u6761\u6587\u672c\u8c03\u7528 embedding \u6a21\u578b\uff0c\u5f97\u5230\u5411\u91cf\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201c\u4eca\u5929\u5929\u6c14\u5f88\u597d\u201d \u2192 [0.12, -0.03, \u2026, 0.88]\uff08\u5047\u8bbe\u4e3a 768 \u7ef4\uff09<\/li>\n\n\n\n<li>\u201c\u6211\u559c\u6b22\u5403\u82f9\u679c\u201d \u2192 [0.01, 0.22, \u2026, -0.11]<\/li>\n\n\n\n<li>\u201c\u4eca\u5929\u5929\u6c14\u4e0d\u9519\u201d \u2192 [0.13, -0.02, \u2026, 0.87]<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5b58\u5165\u5411\u91cf\u6570\u636e\u5e93\uff0c\u540e\u7eed\u68c0\u7d22\u65f6\uff0c\u7528\u6237\u8f93\u5165\u201c\u5929\u6c14\u5982\u4f55\u201d\uff0c\u4e5f\u8f6c\u4e3a\u5411\u91cf\uff0c\u4e0e\u4e0a\u8ff0\u5411\u91cf\u505a\u76f8\u4f3c\u5ea6\u8ba1\u7b97\uff0c\u8fd4\u56de\u6700\u76f8\u5173\u7684\u6587\u6863\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001Reranker\uff08\u91cd\u6392\u5e8f\uff09\u6a21\u578b\u539f\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">2.1 \u539f\u7406\u7b80\u4ecb<\/h3>\n\n\n\n<p>Reranker \u6a21\u578b\u7684\u76ee\u6807\u662f\u5bf9\u521d\u6b65\u68c0\u7d22\u5f97\u5230\u7684\u5019\u9009\u6587\u6863\u8fdb\u884c\u66f4\u7cbe\u7ec6\u7684\u76f8\u5173\u6027\u6392\u5e8f\u3002\u5b83\u901a\u5e38\u57fa\u4e8e\u66f4\u590d\u6742\u7684\u6df1\u5ea6\u5b66\u4e60\u6a21\u578b\uff08\u5982\u8de8\u7f16\u7801\u5668 cross-encoder\uff09\uff0c\u5bf9\u201c\u67e5\u8be2-\u6587\u6863\u201d\u5bf9\u8fdb\u884c\u9010\u4e00\u6253\u5206\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.2 \u5de5\u4f5c\u6d41\u7a0b<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u521d\u6b65\u68c0\u7d22<\/strong>\uff1a\u7528 embedding \u68c0\u7d22\u5f97\u5230 top-N \u4e2a\u5019\u9009\u6587\u6863\u3002<\/li>\n\n\n\n<li><strong>\u6784\u9020\u8f93\u5165\u5bf9<\/strong>\uff1a\u5c06\u201c\u67e5\u8be2-\u6587\u6863\u201d\u5bf9\u8f93\u5165 reranker \u6a21\u578b\u3002<\/li>\n\n\n\n<li><strong>\u76f8\u5173\u6027\u6253\u5206<\/strong>\uff1a\u6a21\u578b\u8f93\u51fa\u6bcf\u4e2a\u5bf9\u7684\u76f8\u5173\u6027\u5206\u6570\u3002<\/li>\n\n\n\n<li><strong>\u6392\u5e8f<\/strong>\uff1a\u6309\u5206\u6570\u5bf9\u5019\u9009\u6587\u6863\u91cd\u65b0\u6392\u5e8f\uff0c\u8fd4\u56de\u6700\u76f8\u5173\u7684\u7ed3\u679c\u3002<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">2.3 \u5e94\u7528\u573a\u666f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u68c0\u7d22\u7cfb\u7edf\u7684\u7cbe\u6392\u9636\u6bb5\uff08\u5982\u641c\u7d22\u5f15\u64ce\u3001\u95ee\u7b54\u7cfb\u7edf\uff09\u3002<\/li>\n\n\n\n<li>\u9700\u8981\u9ad8\u7cbe\u5ea6\u76f8\u5173\u6027\u5224\u65ad\u7684\u573a\u666f\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.4 \u6570\u636e\u5904\u7406\u4f8b\u5b50<\/h3>\n\n\n\n<p>\u5047\u8bbe\u7528\u6237\u67e5\u8be2\uff1a\u201c\u5929\u6c14\u600e\u4e48\u6837\u201d\uff0cembedding \u68c0\u7d22\u5f97\u5230\u5982\u4e0b\u5019\u9009\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5019\u9009\u6587\u6863ID<\/th><th>\u6587\u672c\u5185\u5bb9<\/th><th>\u521d\u6b65\u76f8\u4f3c\u5ea6<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>\u4eca\u5929\u5929\u6c14\u5f88\u597d<\/td><td>0.92<\/td><\/tr><tr><td>3<\/td><td>\u4eca\u5929\u5929\u6c14\u4e0d\u9519<\/td><td>0.89<\/td><\/tr><tr><td>2<\/td><td>\u6211\u559c\u6b22\u5403\u82f9\u679c<\/td><td>0.10<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Reranker \u5904\u7406\u6d41\u7a0b\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6784\u9020\u8f93\u5165\u5bf9\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>(\u201c\u5929\u6c14\u600e\u4e48\u6837\u201d, \u201c\u4eca\u5929\u5929\u6c14\u5f88\u597d\u201d)<\/li>\n\n\n\n<li>(\u201c\u5929\u6c14\u600e\u4e48\u6837\u201d, \u201c\u4eca\u5929\u5929\u6c14\u4e0d\u9519\u201d)<\/li>\n\n\n\n<li>(\u201c\u5929\u6c14\u600e\u4e48\u6837\u201d, \u201c\u6211\u559c\u6b22\u5403\u82f9\u679c\u201d)<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8f93\u5165 reranker \u6a21\u578b\uff0c\u5f97\u5230\u76f8\u5173\u6027\u5206\u6570\uff1a<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>(\u201c\u5929\u6c14\u600e\u4e48\u6837\u201d, \u201c\u4eca\u5929\u5929\u6c14\u5f88\u597d\u201d) \u2192 0.98<\/li>\n\n\n\n<li>(\u201c\u5929\u6c14\u600e\u4e48\u6837\u201d, \u201c\u4eca\u5929\u5929\u6c14\u4e0d\u9519\u201d) \u2192 0.95<\/li>\n\n\n\n<li>(\u201c\u5929\u6c14\u600e\u4e48\u6837\u201d, \u201c\u6211\u559c\u6b22\u5403\u82f9\u679c\u201d) \u2192 0.05<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6309\u5206\u6570\u6392\u5e8f\uff0c\u6700\u7ec8\u8fd4\u56de\u6700\u76f8\u5173\u7684\u6587\u6863\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u603b\u7ed3<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Embedding<\/strong>\uff1a\u5c06\u6587\u672c\u8f6c\u4e3a\u5411\u91cf\uff0c\u505a\u7c97\u6392\u3001\u53ec\u56de\u3002<\/li>\n\n\n\n<li><strong>Reranker<\/strong>\uff1a\u5bf9\u53ec\u56de\u7ed3\u679c\u505a\u7cbe\u6392\uff0c\u63d0\u5347\u76f8\u5173\u6027\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>embedding\uff08\u5d4c\u5165\uff09\u6a21\u578b\u548c&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-2535","post","type-post","status-publish","format-standard","hentry","category-4"],"_links":{"self":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/posts\/2535","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/comments?post=2535"}],"version-history":[{"count":1,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/posts\/2535\/revisions"}],"predecessor-version":[{"id":2536,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/posts\/2535\/revisions\/2536"}],"wp:attachment":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/media?parent=2535"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/categories?post=2535"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/tags?post=2535"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}