{"id":479,"date":"2026-03-01T21:08:00","date_gmt":"2026-03-01T13:08:00","guid":{"rendered":"https:\/\/mitongxue.cn\/?p=479"},"modified":"2026-06-18T21:15:51","modified_gmt":"2026-06-18T13:15:51","slug":"rag%e5%9f%ba%e7%a1%80%e7%9f%a5%e8%af%86","status":"publish","type":"post","link":"https:\/\/mitongxue.cn\/index.php\/2026\/03\/01\/rag%e5%9f%ba%e7%a1%80%e7%9f%a5%e8%af%86\/","title":{"rendered":"RAG\u57fa\u7840\u77e5\u8bc6"},"content":{"rendered":"\n

RAG\uff0c\u5168\u79f0 Retrieval-Augmented Generation\uff0c\u4e2d\u6587\uff1a\u68c0\u7d22\u589e\u5f3a\u751f\u6210<\/p>\n\n\n\n

\u6838\u5fc3\u601d\u60f3\uff1a\u4e3a\u5927\u6a21\u578b\u8865\u5145\u6765\u81ea\u4e8e\u5916\u90e8\u7684\u76f8\u5173\u6570\u636e\u4e0e\u4e0a\u4e0b\u6587\uff0c\u4ece\u800c\u5e2e\u52a9\u5927\u6a21\u578b\u751f\u6210\u66f4\u4e30\u5bcc\u3001\u66f4\u51c6\u786e\u3001\u66f4\u53ef\u9760\u7684\u5185\u5bb9\u3002<\/p>\n\n\n\n

\u4e5f\u5c31\u662f \u4e34\u65f6\u7ed9\u5927\u6a21\u578b\u5916\u6302\u4e00\u4e2a\u77e5\u8bc6\u5e93<\/strong>\u3002<\/p>\n\n\n\n

\u7ecf\u5178\u67b6\u6784<\/h2>\n\n\n\n

\u7b80\u5355\u7684 RAG \u5e94\u7528\u4ece\u6574\u4f53\u4e0a\u5206\u4e3a\u4e24\u4e2a\u9636\u6bb5\uff1a<\/p>\n\n\n\n

    \n
  1. \u6570\u636e\u7d22\u5f15\uff08Data Indexing\uff09<\/li>\n\n\n\n
  2. \u6570\u636e\u67e5\u8be2\uff08Query\uff09\n
      \n
    1. \u68c0\u7d22\uff08Retrieval\uff09<\/li>\n\n\n\n
    2. \u751f\u6210\uff08Generation\uff09<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n\n\n\n

      1. \u6570\u636e\u7d22\u5f15<\/h3>\n\n\n\n

      \u5728\u505a\u6570\u636e\u7d22\u5f15\u65f6\uff0c\u901a\u5e38\u5206\u4e3a\u8fd9\u4e48\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n\n\n\n

        \n
      1. \u52a0\u8f7d\u6587\u6863<\/li>\n\n\n\n
      2. \u5207\u5206\u6210 chunks<\/li>\n\n\n\n
      3. \u8f6c\u5316\u4e3a\u5411\u91cf\u5d4c\u5165<\/li>\n\n\n\n
      4. \u5b58\u5165\u5411\u91cf\u6570\u636e\u5e93<\/li>\n<\/ol>\n\n\n\n

        \u5207\u5206\u6210chunks<\/strong><\/p>\n\n\n\n

        \u5bf9\u8f93\u5165\u7684\u6587\u6863\u8fdb\u884c\u5206\u5272\uff0c\u5206\u5272\u6210\u4e00\u4e2a\u4e00\u4e2a\u77e5\u8bc6\u5757\uff08Chunk\uff09\uff0c\u4ece\u800c\u4e3a\u540e\u7eed\u5d4c\u5165\u505a\u51c6\u5907\u3002<\/p>\n\n\n\n

          \n
        1. \u8bed\u4e49\u7ed3\u6784\u7ef4\u5ea6\uff1a\u5f3a\u8c03\u7684\u662f\u8bed\u4e49\u5b8c\u6574\u6027<\/strong>\uff0c\u9632\u6b62\u6a21\u578b\u62ff\u5230\u201c\u65ad\u53e5\u3001\u4e0d\u5b8c\u6574\u201d\u7684\u4e0a\u4e0b\u6587\u3002\u53ef\u4ee5\u6309\u7167\u53e5\u5b50\u7684\u7c92\u5ea6\u8fdb\u884c\u5207\u5272\uff0c\u5c06\u6bcf\u4e00\u6bb5\u6587\u672c\u6309\u53e5\u53f7\u3001\u95ee\u53f7\u3001\u53f9\u53f7\u7b49 \u6807\u70b9\u7b26\u53f7<\/strong> \u5206\u5272\u3002\u539f\u6587ChatGPT \u662f\u7531 OpenAI \u5f00\u53d1\u7684\u5927\u8bed\u8a00\u6a21\u578b\u3002\u5b83\u57fa\u4e8e Transformer \u67b6\u6784\uff0c\u5177\u6709\u5f3a\u5927\u7684\u8bed\u8a00\u7406\u89e3\u548c\u751f\u6210\u80fd\u529b\u3002<\/code>\u5207\u5272\u540eChatGPT \u662f\u7531 OpenAI \u5f00\u53d1\u7684\u5927\u8bed\u8a00\u6a21\u578b\u3002<\/code>\u5b83\u57fa\u4e8e Transformer \u67b6\u6784\uff0c\u5177\u6709\u5f3a\u5927\u7684\u8bed\u8a00\u7406\u89e3\u548c\u751f\u6210\u80fd\u529b\u3002<\/code><\/li>\n\n\n\n
        2. \u5b9e\u73b0\u7b56\u7565\u7ef4\u5ea6\uff1a\u6ee1\u8db3\u5411\u91cf\u6a21\u578b\u6709\u6700\u5927\u8bcd\u5143\u9650\u5236\uff0c\u6bd4\u5982 OpenAI embedding \u6700\u5927\u7ea6 8192 \u8bcd\u5143\u6570\u3002\n
            \n
          1. \u56fa\u5b9a\u957f\u5ea6\u5b57\u7b26\u5207\u5206\uff1a\u6bcf N \u5b57\u7b26\u4e3a\u4e00\u6bb5\uff0c\u9002\u5408\u89c4\u5219\u6027\u8f83\u5f3a\u7684\u6587\u6863<\/li>\n\n\n\n
          2. \u8bcd\u5143\u5207\u5206\uff1a\u6bcf N \u4e2a\u8bcd\u5143\u5207\u4e00\u6bb5\uff0c\u517c\u5bb9\u6a21\u578b\u7684\u8bcd\u5143\u6570\u9650\u5236<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n\n\n\n

            \u4e0a\u9762\u8fd9\u4e24\u4e2a\u7b56\u7565\u53ef\u4ee5\u7ec4\u5408\u7740\u6765\u4f7f\u7528\u3002<\/p>\n\n\n\n

            \u8f6c\u4e3a\u5411\u91cf<\/strong><\/p>\n\n\n\n

            \u5c06\u6bcf\u4e2a chunk \u8f6c\u6362\u4e3a\u4e00\u4e2a\u201c\u9ad8\u7ef4\u5411\u91cf\u201d\uff0c\u7528\u6765\u8868\u8fbe\u5176\u8bed\u4e49\u3002<\/p>\n\n\n\n

            \u6bcf\u4e2a\u5411\u91cf\u901a\u5e38\u662f\u4e00\u4e2a\u957f\u5ea6\u4e3a 1536 \u6216 768 \u7684\u6d6e\u70b9\u6570\u6570\u7ec4\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n

            [0.112, -0.045, 0.203, ..., 0.087]  \/\/ \u4e00\u4e2a chunk \u7684\u8bed\u4e49\u5411\u91cf<\/code><\/pre>\n\n\n\n
            \u5b58\u5165\u5411\u91cf\u6570\u636e\u5e93<\/strong><\/p>\n\n\n\n
            \u4e00\u822c\u4f1a\u5b58\u50a8\u5728\u529f\u80fd\u5168\u9762\u7684 \u5411\u91cf\u6570\u636e\u5e93<\/strong> \u91cc\u9762\uff0c\u5411\u91cf\u6570\u636e\u5e93\u4f1a\u63d0\u4f9b\u5f3a\u5927\u7684\u5411\u91cf\u68c0\u7d22\u7b97\u6cd5\u4e0e\u7ba1\u7406\u63a5\u53e3\uff0c\u8fd9\u6837\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u5bf9\u8f93\u5165\u95ee\u9898\u8fdb\u884c \u8bed\u4e49\u68c0\u7d22<\/strong>\u3002<\/p>\n\n\n\n
            \u5e38\u89c1\u5411\u91cf\u6570\u636e\u5e93\uff1a<\/p>\n\n\n\n
            \u5411\u91cf\u5e93<\/th>\u7279\u70b9<\/th><\/tr>
            Supabase<\/td>PostgreSQL + pgvector \u6269\u5c55<\/td><\/tr>
            Weaviate<\/td>\u4e91\u670d\u52a1 + \u672c\u5730\u90e8\u7f72\u5747\u53ef<\/td><\/tr>
            Pinecone<\/td>\u9ad8\u6027\u80fd\u3001\u6613\u63a5\u5165<\/td><\/tr>
            Milvus<\/td>\u6d77\u91cf\u6570\u636e\u3001\u9ad8\u6027\u80fd\u641c\u7d22<\/td><\/tr>
            MemoryVectorStore<\/td>\u7eaf JS \u5185\u5b58\u5411\u91cf\u5e93\uff08\u6d4b\u8bd5\u7528\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
            2. \u6570\u636e\u67e5\u8be2<\/h3>\n\n\n\n
            \u6570\u636e\u67e5\u8be2\u9636\u6bb5\u7684\u4e24\u5927\u6838\u5fc3\u9636\u6bb5\u662f \u68c0\u7d22<\/strong> \u4e0e \u751f\u6210<\/strong>\u3002<\/p>\n\n\n\n
            \u68c0\u7d22\u9636\u6bb5<\/strong><\/p>\n\n\n\n
            \u5206\u4e3a\u4e0b\u9762\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n\n\n\n
              \n
            1. \u5c06 Query\uff08\u7528\u6237\u7684\u95ee\u9898\uff09 \u8f6c\u5316\u4e3a\u5411\u91cf<\/li>\n\n\n\n
            2. \u5728\u5411\u91cf\u6570\u636e\u5e93\u4e2d\u8fdb\u884c\u76f8\u4f3c\u5ea6\u68c0\u7d22\uff08\u8bed\u4e49\u68c0\u7d22\uff09\uff0c\u76f8\u4f3c\u5ea6\u7684\u68c0\u7d22\uff0c\u6709\u51e0\u79cd\u65b9\u5f0f\n
                \n
              1. \u4f59\u5f26\u76f8\u4f3c\u5ea6<\/strong><\/li>\n\n\n\n
              2. \u6b27\u6c0f\u8ddd\u79bb<\/li>\n\n\n\n
              3. \u70b9\u79ef<\/li>\n<\/ol>\n<\/li>\n\n\n\n
              4. \u4e3a\u751f\u6210\u9636\u6bb5\u51c6\u5907\u68c0\u7d22\u7ed3\u679c<\/li>\n<\/ol>\n\n\n\n
                <\/p>\n","protected":false},"excerpt":{"rendered":"
                RAG\uff0c\u5168\u79f0 Retrieval-Augmente..<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27,36],"tags":[38,37],"class_list":["post-479","post","type-post","status-publish","format-standard","hentry","category-ai","category-rag","tag-ai","tag-rag"],"featured_image_urls":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","1536x1536":"","2048x2048":""},"author_info":{"info":["\u9648 \u67d0\u4eba"]},"category_info":"AI<\/a> RAG<\/a>","tag_info":"RAG","comment_count":"0","_links":{"self":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/479","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/comments?post=479"}],"version-history":[{"count":2,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/479\/revisions"}],"predecessor-version":[{"id":481,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/479\/revisions\/481"}],"wp:attachment":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/media?parent=479"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/categories?post=479"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/tags?post=479"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}