{"id":20356,"date":"2026-02-24T12:10:56","date_gmt":"2026-02-24T04:10:56","guid":{"rendered":"https:\/\/92it.top\/?p=20356"},"modified":"2026-02-24T12:10:56","modified_gmt":"2026-02-24T04:10:56","slug":"%e6%af%8f%e5%a4%a9%e5%90%83%e9%80%8f%e4%b8%80%e4%b8%aaai%e7%9f%a5%e8%af%86%e7%82%b9_langgraph","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=20356","title":{"rendered":"\u6bcf\u5929\u5403\u900f\u4e00\u4e2aAI\u77e5\u8bc6\u70b9_LangGraph"},"content":{"rendered":"\n<p>\u8f6c\u8f7d\uff1a\u5c0f\u7ea2\u4e66 AI\u4ea7\u54c1\u8d75\u54e5<\/p>\n\n\n\n<p><strong>\u524d\u8a00\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u4e0a\u4e0a\u5468\u6211\u4eec\u804a\u4e86\u804a LangChain\uff0c\u6211\u4eec\u628a LangChain \u6bd4\u4f5c\u4e00\u4e2a \u201c\u5de5\u5177\u7bb1\u201d\uff0c\u5176\u4e2d\u7684\u6838\u5fc3\u7ec4\u4ef6 Chains\uff08\u94fe\uff09\uff0c\u53ef\u4ee5\u8ba9\u6211\u4eec\u50cf\u642d\u5efa\u6d41\u6c34\u7ebf\u4e00\u6837\uff0c\u628a\u5404\u79cd AI \u80fd\u529b\u4e32\u8054\u8d77\u6765\u3002\u8fd9\u4e2a\u6a21\u578b\u5f88\u68d2\uff0c\u5bf9\u4e8e\u5f88\u591a\u4efb\u52a1\u7b80\u76f4\u662f\u624b\u5230\u64d2\u6765\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\uff0c\u5f53 AI \u5f00\u53d1\u8005\u4eec\u60f3\u7528\u5b83\u6765\u505a\u4e00\u4e2a\u590d\u6742\u7684 AI \u7cfb\u7edf\uff08\u6bd4\u5982\u4e00\u4e2a\u80fd\u81ea\u6211\u53cd\u601d\u3001\u591a\u8f6e\u4fee\u6b63\u3001\u534f\u540c\u5de5\u4f5c\u7684\u590d\u6742 AI \u667a\u80fd\u4f53\uff09\u65f6\uff0c\u4ed6\u4eec\u53d1\u73b0\uff0c\u8fd9\u6761 \u201c\u6d41\u6c34\u7ebf\u201d \u597d\u50cf\u6709\u70b9\u2026\u2026 \u592a\u76f4\u4e86\u3002<\/p>\n\n\n\n<p>\u4eca\u5929\uff0c\u54b1\u6765\u804a\u804a LangChain \u7684 \u201c\u4eb2\u513f\u5b50\u201d\u2014\u2014<strong>LangGraph<\/strong>\u3002\u5b83\u5f7b\u5e95\u6253\u7834\u4e86 \u201c\u94fe\u201d \u7684\u675f\u7f1a\uff0c\u5f15\u5165\u4e86 \u201c\u56fe\u201d \u7684\u7ed3\u6784\uff0c\u8ba9\u6784\u5efa\u590d\u6742 AI \u5e94\u7528\u7684\u53ef\u80fd\u6027\uff0c\u4ece\u4e00\u6761\u76f4\u7ebf\uff0c\u53d8\u6210\u4e86\u4e00\u5f20\u7f51\u3002<\/p>\n\n\n\n<p>\u4f19\u8ba1\u4eec\uff0c\u51c6\u5907\u597d\u4e86\u5417\uff1f\u54b1\u4eec\u51fa\u53d1\u4e86\uff01\uff01\uff01<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\u4e00\u3001\u56de\u987e\u4e0e\u53cd\u601d\uff0cLangChain \u201c\u94fe\u201d \u5f0f\u7ed3\u6784\u7684\u5929\u82b1\u677f\u5728\u54ea\uff1f\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u5728\u4ecb\u7ecd LangGraph \u4e4b\u524d\uff0c\u6211\u4eec\u5fc5\u987b\u5148\u6df1\u523b\u7406\u89e3\uff0c\u5b83\u5230\u5e95\u89e3\u51b3\u4e86LangChain \u7684\u4ec0\u4e48\u95ee\u9898\uff1f\u6211\u4eec\u5148\u5feb\u901f\u56de\u987e\u4e00\u4e0b LangChain \u7684\u6838\u5fc3 \u2014\u2014Chain\uff08\u94fe\uff09\u548c Agent\uff08\u667a\u80fd\u4f53\uff09\uff0c\u5e76\u770b\u770b\u5b83\u4eec\u7684 \u201c\u963f\u5580\u7409\u65af\u4e4b\u8e35\u201d\u3002<\/p>\n\n\n\n<p><strong>\ud83d\udd391. Chain\uff1a\u4e00\u6761\u9053\u8d70\u5230\u9ed1\u7684 \u201c\u5355\u884c\u7ebf\u201d<\/strong><\/p>\n\n\n\n<p>\u6211\u4eec\u4e0a\u6b21\u8bf4\u8fc7\uff0cChain \u5c31\u50cf\u4e00\u6761\u5de5\u4f5c\u6d41\u6c34\u7ebf\u3002<\/p>\n\n\n\n<p>\u539f\u6599\u8fdb\u6765 \u2192 \u5de5\u4f4d A \u5904\u7406 \u2192 \u4f20\u7ed9\u5de5\u4f4d B \u5904\u7406 \u2192 \u2026\u2026 \u2192 \u6700\u7ec8\u4ea7\u54c1\u51fa\u53bb<\/p>\n\n\n\n<p>\u8fd9\u4e2a\u6a21\u5f0f\u6e05\u6670\u4e14\u9ad8\u6548\u3002\u6bd4\u5982 \u201c\u5148\u603b\u7ed3\u6587\u672c\uff0c\u518d\u7ffb\u8bd1\u6210\u82f1\u6587\u201d\uff0c\u8fd9\u79cd\u4e00\u6b65\u63a5\u4e00\u6b65\u7684\u7ebf\u6027\u4efb\u52a1\uff0c\u7528 Chain \u7b80\u76f4\u5b8c\u7f8e\u3002\u4f46\u662f\uff0c\u73b0\u5b9e\u4e16\u754c\u662f\u590d\u6742\u7684\uff01\u5f88\u591a\u4efb\u52a1\u4e0d\u662f\u4e00\u6761\u76f4\u7ebf\u3002<\/p>\n\n\n\n<p>\u60f3\u8c61\u4e00\u4e2a\u771f\u5b9e\u7684\u573a\u666f\uff1a<strong>\u4f60\u8ba9\u4e00\u4e2a\u5b9e\u4e60\u751f\u5199\u4e00\u4efd\u5e02\u573a\u5206\u6790\u62a5\u544a<\/strong>\u3002<\/p>\n\n\n\n<p>\u4ed6\u7684\u5de5\u4f5c\u6d41\u7a0b\u53ef\u80fd\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n<ol>\n<li>\u4e0a\u7f51\u641c\u7d22\u76f8\u5173\u8d44\u6599\u3002<\/li>\n\n\n\n<li>\u6839\u636e\u8d44\u6599\u5199\u51fa\u7b2c\u4e00\u7248\u8349\u7a3f\u3002<\/li>\n\n\n\n<li>\u4ed6\u81ea\u5df1\u5ba1\u9605\u8349\u7a3f\uff0c\u89c9\u5f97 \u201c\u54ce\u5440\uff0c\u6570\u636e\u4e0d\u591f\u652f\u6491\u8bba\u70b9\u201d\u3002<\/li>\n\n\n\n<li>\u4e8e\u662f\u4ed6\u8fd4\u56de\u7b2c\u4e00\u6b65\uff0c\u8fdb\u884c\u65b0\u4e00\u8f6e\u7684\u641c\u7d22\uff0c\u8865\u5145\u66f4\u591a\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u91cd\u5199 \/ \u4fee\u6539\u8349\u7a3f\u3002<\/li>\n\n\n\n<li>\u4ed6\u53c8\u89c9\u5f97 \u201c\u55ef\uff0c\u7ed3\u6784\u6709\u70b9\u4e71\u201d\u3002<\/li>\n\n\n\n<li>\u4e8e\u662f\u4ed6\u4e0d\u641c\u7d22\u4e86\uff0c\u800c\u662f\u76f4\u63a5\u5bf9\u73b0\u6709\u5185\u5bb9\u8fdb\u884c\u91cd\u65b0\u7ec4\u7ec7\u3002<\/li>\n\n\n\n<li>\u6700\u540e\uff0c\u4ed6\u89c9\u5f97 \u201cOK\uff0c\u5dee\u4e0d\u591a\u4e86\u201d\uff0c\u624d\u628a\u62a5\u544a\u4ea4\u7ed9\u4f60\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5927\u5bb6\u770b\u5230\u4e86\u5427\uff1f\u8fd9\u4e2a\u8fc7\u7a0b\u5145\u6ee1\u4e86<strong>\u5faa\u73af\uff08loops\uff09\u3001\u5224\u65ad\uff08decisions\uff09\u548c\u5206\u652f\uff08branches\uff09<\/strong>\u3002\u4ed6\u4f1a\u6839\u636e\u5f53\u524d\u8349\u7a3f\u7684\u72b6\u6001\uff0c\u6765\u51b3\u5b9a\u4e0b\u4e00\u6b65\u662f\u8be5 \u201c\u91cd\u65b0\u641c\u7d22\u201d\u3001\u201c\u91cd\u65b0\u7ec4\u7ec7\u201d \u8fd8\u662f \u201c\u63d0\u4ea4\u5de5\u4f5c\u201d\u3002<\/p>\n\n\n\n<p>\u7528 LangChain \u7684 Chain \u6765\u6a21\u62df\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u4f1a\u53d8\u5f97\u6781\u5176\u75db\u82e6\uff01\u56e0\u4e3a Chain \u5929\u751f\u5c31\u662f\u4e00\u6761\u5355\u884c\u7ebf\uff0c\u5b83\u5f88\u96be\u5b9e\u73b0 \u201c\u8fd4\u56de\u4e0a\u4e00\u6b65\u201d \u6216\u8005 \u201c\u6839\u636e\u6761\u4ef6\u8df3\u8f6c\u5230\u67d0\u4e00\u6b65\u201d \u8fd9\u79cd\u7075\u6d3b\u7684\u63a7\u5236\u6d41\u3002\u5f00\u53d1\u8005\u9700\u8981\u5199\u5927\u91cf\u7684\u3001\u975e\u5e38\u4e0d\u4f18\u96c5\u7684 \u201c\u80f6\u6c34\u4ee3\u7801\u201d \u6765\u5f3a\u884c\u5b9e\u73b0\u5faa\u73af\uff0c\u6574\u4e2a\u903b\u8f91\u4f1a\u53d8\u5f97\u4e00\u56e2\u7cdf\u3002<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\ud83d\udd392. Agent\uff1a\u4e00\u4e2a\u6709\u60f3\u6cd5\u4f46\u6709\u70b9\u5931\u63a7\u7684 \u201c\u9ed1\u7bb1\u201d<\/strong><\/p>\n\n\n\n<p>LangChain \u7684 Agent \u5728\u67d0\u79cd\u7a0b\u5ea6\u4e0a\u89e3\u51b3\u4e86\u8fd9\u4e2a\u95ee\u9898\u3002\u6211\u4eec\u4e0a\u6b21\u8bf4\uff0cAgent \u50cf\u4e00\u4e2a\u6709\u81ea\u4e3b\u51b3\u7b56\u80fd\u529b\u7684 \u201c\u9879\u76ee\u7ecf\u7406\u201d\uff0c\u5b83\u57fa\u4e8e <strong>ReAct (Reason + Act)<\/strong> \u6846\u67b6\uff0c\u53ef\u4ee5\u81ea\u5df1\u51b3\u5b9a\u8c03\u7528\u4ec0\u4e48\u5de5\u5177\u6765\u5b8c\u6210\u4efb\u52a1\u3002<\/p>\n\n\n\n<p>\u5b83\u786e\u5b9e\u80fd\u5b9e\u73b0\u5faa\u73af\uff0c\u6bd4\u5982\u53d1\u73b0\u4fe1\u606f\u4e0d\u591f\uff0c\u5b83\u4f1a\u81ea\u5df1\u51b3\u5b9a\u518d\u6b21\u8c03\u7528\u641c\u7d22\u5de5\u5177\u3002\u4f46 Agent \u7684\u6700\u5927\u95ee\u9898\u5728\u4e8e\uff0c\u5b83\u662f\u4e00\u4e2a \u201c\u9ed1\u7bb1\u201d\uff01\u4f60\u7ed9\u4e86\u5b83\u76ee\u6807\u548c\u5de5\u5177\uff0c\u5b83\u5c31\u5f00\u59cb \u201c\u81ea\u8a00\u81ea\u8bed\u201d\uff08Reasoning\uff09\u548c \u201c\u624b\u5fd9\u811a\u4e71\u201d\uff08Acting\uff09\u4e86\u3002\u6574\u4e2a\u8fc7\u7a0b\uff0c\u4f60\u4f5c\u4e3a \u201c\u8001\u677f\u201d\uff0c\u5f88\u96be\u5bf9\u5b83\u7684\u5de5\u4f5c\u6d41\u7a0b\u8fdb\u884c\u7cbe\u7ec6\u5316\u7684\u63a7\u5236\u548c\u5e72\u9884\u3002<\/p>\n\n\n\n<ul>\n<li>\u4f60\u6ca1\u6cd5\u5f3a\u5236\u5b83\u5fc5\u987b\u5148\u5199\u8349\u7a3f\u518d\u6279\u5224\uff0c\u5b83\u53ef\u80fd\u641c\u4e86\u534a\u5929\uff0c\u89c9\u5f97\u4fe1\u606f\u591f\u4e86\u76f4\u63a5\u5c31\u7ed9\u4f60\u4e00\u4e2a\u6700\u7ec8\u7b54\u6848\u3002<\/li>\n\n\n\n<li>\u4f60\u6ca1\u6cd5\u5728\u5b83\u72af\u9519\u7684\u65f6\u5019\u628a\u5b83\u62c9\u56de\u6765\uff0c\u5b83\u53ef\u80fd\u5728\u4e00\u4e2a\u9519\u8bef\u7684\u601d\u8def\u4e0a\u5faa\u73af\u4e86\u5341\u51e0\u6b21\uff0c\u6d6a\u8d39\u4e86\u5927\u91cf\u7684\u65f6\u95f4\u548c API \u8c03\u7528\u8d39\u7528\uff0c\u6700\u7ec8\u544a\u8bc9\u4f60 \u201c\u6211\u505a\u4e0d\u5230\u201d\u3002<\/li>\n\n\n\n<li>\u5b83\u7684\u884c\u4e3a\u4e0d\u591f\u7a33\u5b9a\uff0c\u540c\u6837\u7684\u95ee\u9898\uff0c\u8fd9\u6b21\u5b83\u53ef\u80fd\u662f A-B-C \u7684\u6b65\u9aa4\uff0c\u4e0b\u6b21\u53ef\u80fd\u662f A-C-B\uff0c\u7ed3\u679c\u53ef\u80fd\u622a\u7136\u4e0d\u540c\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5bf9\u4e8e\u60f3\u5f00\u53d1\u4e00\u4e2a\u53ef\u9760\u3001\u53ef\u63a7\u3001\u53ef\u9884\u6d4b\u7684\u5546\u4e1a\u7ea7 AI \u5e94\u7528\u7684\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u8fd9\u79cd \u201c\u9ed1\u7bb1\u201d \u5f0f\u7684\u667a\u80fd\u4f53\uff0c\u5c31\u50cf\u4e00\u4e2a\u80fd\u529b\u5f88\u5f3a\u4f46\u91ce\u6027\u96be\u9a6f\u7684\u5458\u5de5\uff0c\u4f60\u4e0d\u6562\u628a\u771f\u6b63\u6838\u5fc3\u7684\u4efb\u52a1\u4ea4\u7ed9\u5b83\u3002<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\u4e8c\u3001LangGraph \u767b\u573a\uff1a\u4ece \u201c\u94fe\u201d \u5230 \u201c\u7f51\u201d \u7684\u9769\u547d\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>LangGraph \u5230\u5e95\u662f\u4ec0\u4e48\uff1f<\/p>\n\n\n\n<p>\u5982\u679c\u8bf4 LangChain \u7684 Chain \u662f\u4e00\u6761\u7b14\u76f4\u7684\u4e61\u95f4\u5c0f\u8def\uff0c\u90a3\u4e48 LangGraph \u5c31\u662f\u4e00\u5f20\u5e03\u6ee1\u4e86\u7acb\u4ea4\u6865\u3001\u73af\u5c9b\u548c\u4ea4\u901a\u4fe1\u53f7\u706f\u7684\u73b0\u4ee3\u5316\u57ce\u5e02\u4ea4\u901a\u7f51\u7edc\uff01<\/p>\n\n\n\n<p>\u6700\u6838\u5fc3\u7684\u4e00\u53e5\u8bdd\u5b9a\u4e49\uff1a<strong>LangGraph \u662f\u4e00\u4e2a\u4e13\u95e8\u7528\u4e8e\u6784\u5efa\u53ef\u5faa\u73af\u3001\u6709\u72b6\u6001\u7684\u3001\u7c7b\u4f3c \u201c\u56fe\u201d \u7ed3\u6784\u7684\u591a\u667a\u80fd\u4f53\u5e94\u7528\u7684\u5e93<\/strong>\u3002\u5b83\u662f\u5bf9 LangChain \u6838\u5fc3\u601d\u60f3\u7684\u5ef6\u4f38\u548c\u5347\u7ea7\uff0c\u4f46\u5b83\u628a\u57fa\u7840\u5355\u5143\u4ece \u201c\u94fe\u201d \u6362\u6210\u4e86 \u201c\u56fe\uff08Graph\uff09\u201d\u3002<\/p>\n\n\n\n<p>\u5728 LangGraph \u7684\u4e16\u754c\u91cc\uff0c\u4f60\u4e0d\u518d\u662f\u8bbe\u8ba1\u4e00\u6761 \u201c\u6d41\u6c34\u7ebf\u201d\uff0c\u800c\u662f\u5728\u8bbe\u8ba1\u4e00\u5f20 \u201c\u6d41\u7a0b\u56fe\u201d \u6216\u8005 \u201c\u5730\u56fe\u201d\u3002<\/p>\n\n\n\n<p>\u8fd9\u5f20 \u201c\u5730\u56fe\u201d \u7531\u4e24\u4e2a\u6838\u5fc3\u5143\u7d20\u6784\u6210\uff1a<\/p>\n\n\n\n<ol>\n<li><strong>\u8282\u70b9\uff08Nodes\uff09<\/strong>\uff1a\u5730\u56fe\u4e0a\u7684\u5404\u4e2a \u201c\u5730\u70b9\u201d \u6216 \u201c\u7ad9\u70b9\u201d\u3002\u6bcf\u4e2a\u7ad9\u70b9\u90fd\u8d1f\u8d23\u4e00\u9879\u5177\u4f53\u7684\u5de5\u4f5c\uff0c\u6bd4\u5982 \u201c\u641c\u7d22\u7ad9\u201d\u3001\u201c\u5199\u4f5c\u7ad9\u201d\u3001\u201c\u5ba1\u6838\u7ad9\u201d\u3001\u201c\u8ba1\u7b97\u7ad9\u201d\u3002<\/li>\n\n\n\n<li><strong>\u8fb9\uff08Edges\uff09<\/strong>\uff1a\u8fde\u63a5\u8fd9\u4e9b\u7ad9\u70b9\u7684 \u201c\u9053\u8def\u201d\u3002\u9053\u8def\u51b3\u5b9a\u4e86\u4ece\u4e00\u4e2a\u7ad9\u70b9\u5b8c\u6210\u5de5\u4f5c\u540e\uff0c\u63a5\u4e0b\u6765\u5e94\u8be5\u53bb\u5f80\u54ea\u4e2a\u7ad9\u70b9\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u548c Chain \u6700\u5927\u7684\u533a\u522b\u5728\u4e8e\uff0c\u8fd9\u4e9b \u201c\u9053\u8def\u201d \u4e0d\u518d\u662f\u552f\u4e00\u7684\u3001\u5355\u5411\u7684\uff01<\/p>\n\n\n\n<ul>\n<li>\u4f60\u53ef\u4ee5\u4ece \u201c\u5ba1\u6838\u7ad9\u201d \u4fee\u4e00\u6761\u8def\u56de\u5230 \u201c\u641c\u7d22\u7ad9\u201d\uff08\u5b9e\u73b0\u5faa\u73af\uff09\u3002<\/li>\n\n\n\n<li>\u4f60\u53ef\u4ee5\u5728 \u201c\u5ba1\u6838\u7ad9\u201d \u8bbe\u7f6e\u4e00\u4e2a \u201c\u4ea4\u901a\u8b66\u5bdf\u201d\uff08\u6761\u4ef6\u8fb9\uff09\uff0c\u5b83\u4f1a\u6839\u636e\u4f60\u7684\u62a5\u544a\u8d28\u91cf\uff0c\u6307\u6325\u4f60 \u201c\u76f4\u884c\uff0c\u53bb\u7ec8\u70b9\u7ad9\u201d\u3001\u201c\u6389\u5934\uff0c\u56de\u5199\u4f5c\u7ad9\u91cd\u5199\u201d \u6216\u8005 \u201c\u5de6\u8f6c\uff0c\u53bb\u641c\u7d22\u7ad9\u8865\u5145\u6750\u6599\u201d\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u79cd \u201c\u56fe\u201d \u7ed3\u6784\uff0c\u5929\u7136\u5730\u5c31\u652f\u6301\u4e86\u5faa\u73af\u548c\u6761\u4ef6\u5206\u652f\uff0c\u5b8c\u7f8e\u5730\u89e3\u51b3\u4e86 Chain \u7684\u6b7b\u677f\u95ee\u9898\u3002\u540c\u65f6\uff0c\u56e0\u4e3a\u6574\u4e2a\u7f51\u7edc\u662f\u4f60\u81ea\u5df1\u4eb2\u624b\u8bbe\u8ba1\u7684\uff0c\u6bcf\u4e2a\u7ad9\u70b9\u3001\u6bcf\u6761\u9053\u8def\u3001\u6bcf\u4e2a\u4ea4\u901a\u89c4\u5219\u90fd\u6e05\u6e05\u695a\u695a\uff0c\u6240\u4ee5\u5b83\u53c8\u89e3\u51b3\u4e86 Agent \u7684 \u201c\u9ed1\u7bb1\u201d \u95ee\u9898\uff0c\u8ba9\u6574\u4e2a\u5e94\u7528\u53d8\u5f97\u5b8c\u5168\u53ef\u63a7\u548c\u900f\u660e\u3002<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\u4e09\u3001\u62c6\u89e3 LangGraph \u7684\u56db\u5927\u6a21\u5757\uff08\u6838\u5fc3\u7ec4\u4ef6\u7cbe\u8bb2\uff09\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u597d\u4e86\uff0c\u6982\u5ff5\u6211\u4eec\u61c2\u4e86\u3002\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u5e96\u4e01\u89e3\u725b\uff0c\u6df1\u5165 LangGraph \u7684\u5185\u90e8\uff0c\u770b\u770b\u5b83\u7684\u6838\u5fc3\u7ec4\u4ef6\u5230\u5e95\u662f\u600e\u4e48\u8fd0\u4f5c\u7684\u3002\u8bb0\u4f4f\u8fd9\u56db\u4e2a\u8bcd\uff0c\u4f60\u5c31\u638c\u63e1\u4e86 LangGraph \u7684\u7075\u9b42\uff1a<strong>State\uff08\u72b6\u6001\uff09<\/strong>\u3001<strong>Nodes\uff08\u8282\u70b9\uff09<\/strong>\u3001<strong>Edges\uff08\u8fb9\uff09<\/strong>\u3001<strong>Graph\uff08\u56fe\uff09<\/strong>\u3002<\/p>\n\n\n\n<p><strong>\ud83d\udd391. State\uff08\u72b6\u6001\u5bf9\u8c61\uff09\uff1a\u6d41\u6dcc\u5728\u6574\u4e2a\u7f51\u7edc\u4e2d\u7684 \u201c\u8840\u6db2\u201d<\/strong><\/p>\n\n\n\n<p>State \u5728 LangGraph \u91cc\u6700\u4e3a\u91cd\u8981\uff0c\u6240\u4ee5\u54b1\u5148\u804a\u804a State\uff1a<\/p>\n\n\n\n<p><strong>State\uff08\u72b6\u6001\uff09\u662f\u4e00\u4e2a\u5171\u4eab\u7684\u4fe1\u606f\u5bb9\u5668\u3002\u4f60\u53ef\u4ee5\u628a\u5b83\u60f3\u8c61\u6210\u4e00\u4e2a\u5728\u6574\u4e2a\u4ea4\u901a\u7f51\u7edc\u4e2d\u4e0d\u65ad\u6d41\u52a8\u7684\u624b\u63a8\u8f66<\/strong>\u3002<\/p>\n\n\n\n<ul>\n<li>\u5f53\u6d41\u7a0b\u5f00\u59cb\u65f6\uff0c\u8fd9\u4e2a\u624b\u63a8\u8f66\u91cc\u53ef\u80fd\u53ea\u88c5\u7740\u6700\u521d\u7684\u95ee\u9898\uff0c\u6bd4\u5982 <code>{\"\u4efb\u52a1\": \"\u5199\u4e00\u7bc7\u5173\u4e8eAIGC\u7684\u62a5\u544a\"}<\/code>\u3002<\/li>\n\n\n\n<li>\u624b\u63a8\u8f66\u88ab\u63a8\u5230 \u201c\u641c\u7d22\u7ad9\u201d\uff08\u7b2c\u4e00\u4e2a\u8282\u70b9\uff09\uff0c\u8fd9\u4e2a\u7ad9\u70b9\u7684 \u201c\u5de5\u4eba\u201d\uff08\u51fd\u6570\uff09\u4ece\u624b\u63a8\u8f66\u91cc\u62ff\u51fa\u4efb\u52a1\uff0c\u4e0a\u7f51\u641c\u7d22\uff0c\u7136\u540e\u628a\u641c\u7d22\u7ed3\u679c\u653e\u56de\u624b\u63a8\u8f66\u91cc\u3002\u73b0\u5728\u624b\u63a8\u8f66\u91cc\u7684\u4e1c\u897f\u53d8\u6210\u4e86 <code>{\"\u4efb\u52a1\": \"...\", \"\u641c\u7d22\u7ed3\u679c\": [...]}<\/code>\u3002<\/li>\n\n\n\n<li>\u624b\u63a8\u8f66\u53c8\u88ab\u63a8\u5230 \u201c\u5199\u4f5c\u7ad9\u201d\uff0c\u5de5\u4eba\u62ff\u51fa \u201c\u641c\u7d22\u7ed3\u679c\u201d\uff0c\u5199\u4e86\u4e00\u4efd\u8349\u7a3f\uff0c\u7136\u540e\u628a\u8349\u7a3f\u4e5f\u653e\u8fdb\u624b\u63a8\u8f66\u3002\u73b0\u5728\u624b\u63a8\u8f66\u91cc\u662f <code>{\"\u4efb\u52a1\": \"...\", \"\u641c\u7d22\u7ed3\u679c\": [...], \"\u62a5\u544a\u8349\u7a3f\": \"...\"}<\/code>\u3002<\/li>\n\n\n\n<li>\u624b\u63a8\u8f66\u7ee7\u7eed\u88ab\u63a8\u5230 \u201c\u5ba1\u6838\u7ad9\u201d\u2026\u2026<\/li>\n<\/ul>\n\n\n\n<p>\u770b\u5230\u4e86\u5417\uff1fState \u8fd9\u4e2a \u201c\u624b\u63a8\u8f66\u201d\uff0c\u8d2f\u7a7f\u4e86\u6574\u4e2a\u6d41\u7a0b\uff0c\u6240\u6709\u7684\u8282\u70b9\u90fd\u53ef\u4ee5\u4ece\u91cc\u9762\u8bfb\u53d6\u4fe1\u606f\uff0c\u4e5f\u53ef\u4ee5\u628a\u81ea\u5df1\u7684\u5de5\u4f5c\u6210\u679c\u66f4\u65b0\u56de\u53bb\u3002\u5b83\u5c31\u662f\u6574\u4e2a\u56fe\u7684<strong>\u5355\u4e00\u4e8b\u5b9e\u6765\u6e90\uff08Single Source of Truth\uff09<\/strong>\uff0c\u662f\u6240\u6709\u8282\u70b9\u4e4b\u95f4\u6c9f\u901a\u7684\u6865\u6881\u3002<\/p>\n\n\n\n<p>\u8fd9\u79cd\u8bbe\u8ba1\u5f88\u662f\u4f18\u96c5\uff01\u5b83\u8ba9\u6570\u636e\u4f20\u9012\u53d8\u5f97\u975e\u5e38\u6e05\u6670\uff0c\u6bcf\u4e2a\u8282\u70b9\u53ea\u9700\u8981\u5173\u5fc3\u5982\u4f55\u4e0e\u8fd9\u4e2a\u5171\u4eab\u7684 State \u5bf9\u8c61\u4ea4\u4e92\uff0c\u800c\u4e0d\u9700\u8981\u5173\u5fc3\u6570\u636e\u5177\u4f53\u662f\u4ece\u54ea\u4e2a\u4e0a\u6e38\u8282\u70b9\u6765\u7684\u3002\u8fd9\u5927\u5927\u964d\u4f4e\u4e86\u7cfb\u7edf\u7684\u8026\u5408\u5ea6\u3002<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\ud83d\udd392. Nodes\uff08\u8282\u70b9\uff09\uff1a\u5404\u53f8\u5176\u804c\u7684 \u201c\u5de5\u4f5c\u7ad9\u201d<\/strong><\/p>\n\n\n\n<p><strong>Node\uff08\u8282\u70b9\uff09<\/strong>\uff0c\u5c31\u662f\u4e00\u4e2a\u63a5\u6536\u5f53\u524d State\uff0c\u5e76\u5bf9\u5176\u8fdb\u884c\u67d0\u4e9b\u64cd\u4f5c\uff0c\u7136\u540e\u8fd4\u56de\u66f4\u65b0\u7ed3\u679c\u7684 \u201c\u51fd\u6570\u201d \u6216 \u201c\u53ef\u8c03\u7528\u5bf9\u8c61\u201d\u3002<\/p>\n\n\n\n<p>\u5728 LangGraph \u91cc\uff0c\u4e00\u4e2a\u8282\u70b9\u53ef\u4ee5\u505a\u4efb\u4f55\u4e8b\u60c5\uff1a<\/p>\n\n\n\n<ul>\n<li>\u8c03\u7528\u4e00\u4e2a LLM\uff1a\u6bd4\u5982\u8ba9 GPT-4 \u6839\u636e State \u91cc\u7684 \u201c\u641c\u7d22\u7ed3\u679c\u201d \u6765\u5199\u4e00\u4efd\u8349\u7a3f\u3002<\/li>\n\n\n\n<li>\u8c03\u7528\u4e00\u4e2a\u5de5\u5177\uff1a\u6bd4\u5982\u6267\u884c\u4e00\u6b21\u7f51\u7edc\u641c\u7d22\u3001\u4e00\u6b21\u6570\u636e\u5e93\u67e5\u8be2\u3001\u6216\u8005\u8fd0\u884c\u4e00\u6bb5 Python \u4ee3\u7801\u3002<\/li>\n\n\n\n<li>\u4e00\u4e2a\u666e\u901a\u7684 Python \u51fd\u6570\uff1a\u6bd4\u5982\u5bf9 State \u91cc\u7684\u6570\u636e\u8fdb\u884c\u683c\u5f0f\u5316\u3001\u6e05\u6d17\u3001\u6216\u8005\u7b80\u5355\u7684\u903b\u8f91\u5224\u65ad\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6bcf\u4e2a\u8282\u70b9\u90fd\u50cf\u4e00\u4e2a\u4e13\u624d\uff0c\u5b83\u53ea\u8d1f\u8d23\u81ea\u5df1\u7684\u90a3\u4e00\u4ea9\u4e09\u5206\u5730\u513f\u3002\u8fd9\u79cd\u8bbe\u8ba1\u8ba9\u6211\u4eec\u53ef\u4ee5\u628a\u4e00\u4e2a\u590d\u6742\u7684\u4efb\u52a1\uff0c\u62c6\u89e3\u6210\u4e00\u4e2a\u4e2a\u7b80\u5355\u3001\u72ec\u7acb\u3001\u53ef\u6d4b\u8bd5\u7684\u5c0f\u5355\u5143\uff0c\u6781\u5927\u5730\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\ud83d\udd393. Edges\uff08\u8fb9\uff09\uff1a\u51b3\u5b9a\u6d41\u7a0b\u8d70\u5411\u7684 \u201c\u4ea4\u901a\u89c4\u5219\u201d \ud83d\udea6<\/strong><\/p>\n\n\n\n<p><strong>Edges\uff08\u8fb9\uff09<\/strong>\uff0c\u5b9a\u4e49\u4e86\u8282\u70b9\u4e4b\u95f4\u7684\u8fde\u63a5\u5173\u7cfb\uff0c\u4e5f\u5c31\u662f\u6d41\u7a0b\u7684\u8d70\u5411\u3002\u8fd9\u662f LangGraph \u7075\u6d3b\u6027\u548c\u63a7\u5236\u529b\u7684\u6838\u5fc3\u4f53\u73b0\u3002<\/p>\n\n\n\n<p>LangGraph \u4e3b\u8981\u6709<strong>\u4e09\u79cd\u7c7b\u578b\u7684\u8fb9<\/strong>\uff1a<\/p>\n\n\n\n<ul>\n<li><strong>\u8d77\u59cb\u8fb9\uff08Starting Edge\uff09<\/strong>\uff1a\u5b9a\u4e49\u4e86\u6574\u4e2a\u6d41\u7a0b\u4ece\u54ea\u4e2a\u8282\u70b9\u5f00\u59cb\u3002\u76f8\u5f53\u4e8e \u201c\u673a\u573a\u5165\u53e3\u201d\u3002<\/li>\n\n\n\n<li><strong>\u666e\u901a\u8fb9\uff08Normal Edges\uff09<\/strong>\uff1a\u5b9a\u4e49\u4e86\u4e00\u4e2a\u8282\u70b9\u5b8c\u6210\u540e\uff0c\u65e0\u6761\u4ef6\u5730\u6d41\u5411\u4e0b\u4e00\u4e2a\u8282\u70b9\u3002\u8fd9\u5c31\u50cf\u4e00\u6761\u6ca1\u6709\u5c94\u8def\u53e3\u7684\u9ad8\u901f\u516c\u8def\u3002\u6bd4\u5982\uff0c\u5728\u6211\u4eec\u7684\u4f8b\u5b50\u4e2d\uff0c\u201c\u641c\u7d22\u7ad9\u201d \u5b8c\u6210\u4e4b\u540e\uff0c\u5fc5\u7136\u662f\u53bb \u201c\u5199\u4f5c\u7ad9\u201d\uff0c\u8fd9\u5c31\u53ef\u4ee5\u7528\u4e00\u6761\u666e\u901a\u8fb9\u8fde\u63a5\u3002<\/li>\n\n\n\n<li><strong>\u6761\u4ef6\u8fb9\uff08Conditional Edges\uff09<\/strong>\uff1a\u8fd9\u662f LangGraph \u7684\u6492\u624b\u950f\uff01\u5b83\u5141\u8bb8\u4f60\u6839\u636e\u5f53\u524d State \u4e2d\u7684\u67d0\u4e9b\u503c\uff0c\u6765\u52a8\u6001\u5730\u51b3\u5b9a\u4e0b\u4e00\u6b65\u8981\u53bb\u54ea\u4e2a\u8282\u70b9\u3002\u8fd9\u5c31\u50cf\u4e00\u4e2a\u7e41\u5fd9\u7684\u4ea4\u901a\u73af\u5c9b\uff0c\u4e2d\u95f4\u7ad9\u7740\u4e00\u4e2a\u806a\u660e\u7684 \u201c\u4ea4\u901a\u8b66\u5bdf\u201d\u3002 \u6211\u4eec\u6765\u8be6\u7ec6\u8bf4\u8bf4\u8fd9\u4e2a \u201c\u4ea4\u901a\u8b66\u5bdf\u201d \u662f\u600e\u4e48\u5de5\u4f5c\u7684\uff1a<ul><li>\u4f60\u5148\u5b9a\u4e49\u4e00\u4e2a \u201c\u8def\u7531\u51fd\u6570\u201d\uff08Routing Function\uff09\u3002\u8fd9\u4e2a\u51fd\u6570\u4f1a\u63a5\u6536\u5f53\u524d\u7684 State \u4f5c\u4e3a\u8f93\u5165\u3002\u5728\u51fd\u6570\u5185\u90e8\uff0c\u4f60\u53ef\u4ee5\u7f16\u5199\u903b\u8f91\u6765\u68c0\u67e5 State\u3002\u6bd4\u5982\uff0c\u68c0\u67e5 State \u91cc\u7684 \u201c\u5ba1\u6838\u610f\u89c1\u201d \u8fd9\u4e2a\u5b57\u6bb5\u3002\u6839\u636e\u68c0\u67e5\u7ed3\u679c\uff0c\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u8fd9\u4e2a\u5b57\u7b26\u4e32\u5c31\u662f\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u540d\u5b57\u3002<\/li><\/ul><strong>\u4e3e\u4f8b<\/strong>\uff1a\u4e00\u4e2a \u201c\u5ba1\u6838\u7ad9\u201d \u5b8c\u6210\u4e4b\u540e\uff0c\u6211\u4eec\u8bbe\u7f6e\u4e00\u4e2a\u6761\u4ef6\u8fb9\uff0c\u8fde\u63a5\u5230\u4e00\u4e2a\u53eb<code>route_after_critique<\/code>\u7684\u8def\u7531\u51fd\u6570\u3002\u8fd9\u4e2a\u51fd\u6570\u5185\u90e8\u7684\u903b\u8f91\u53ef\u80fd\u662f\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u8def\u7531\u51fd\u6570\uff08\u4ea4\u901a\u8b66\u5bdf\uff09\ndef route_after_critique(state):\n    critique = state[\"\u5ba1\u6838\u610f\u89c1\"]\n    if \"\u5b8c\u7f8e\" in critique:\n        return \"end_node\"  # \u76f4\u63a5\u53bb\u7ec8\u70b9\n    elif \"\u4fe1\u606f\u4e0d\u8db3\" in critique:\n        return \"search_node\"  # \u8fd4\u56de\u641c\u7d22\u7ad9\n    else: # \u5176\u4ed6\u60c5\u51b5\uff0c\u6bd4\u5982\u7ed3\u6784\u4e0d\u597d \n        return \"rewrite_node\"  # \u53bb\u91cd\u5199\u7ad9<\/pre>\n\n\n\n<p>\u5927\u5bb6\u770b\u5230\u4e86\u5417\uff1f\u901a\u8fc7\u8fd9\u4e2a\u7b80\u5355\u7684\u8def\u7531\u51fd\u6570\uff0c\u6211\u4eec\u5c31\u5b9e\u73b0\u4e86\u4e00\u4e2a\u6781\u5176\u7075\u6d3b\u7684\u3001\u57fa\u4e8e\u72b6\u6001\u7684\u6d41\u7a0b\u63a7\u5236\uff01\u8fd9\u5c31\u662f\u628a Agent \u7684 \u201c\u9ed1\u7bb1\u201d \u51b3\u7b56\u8fc7\u7a0b\uff0c\u53d8\u6210\u4e86\u6211\u4eec\u81ea\u5df1\u5b9a\u4e49\u7684\u3001\u6e05\u6670\u53ef\u63a7\u7684 \u201c\u767d\u7bb1\u201d \u903b\u8f91\u3002<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\ud83d\udd394. Graph\uff08\u56fe\uff09\uff1a\u7ec4\u88c5\u4e00\u5207\u7684 \u201c\u603b\u5de5\u7a0b\u5e08\u201d<\/strong><\/p>\n\n\n\n<p>\u6700\u540e\uff0c\u4f60\u9700\u8981\u4e00\u4e2a **Graph\uff08\u56fe\uff09** \u5bf9\u8c61\u3002\u5b83\u5c31\u50cf\u4e00\u4e2a\u603b\u5de5\u7a0b\u5e08\uff0c\u8d1f\u8d23\u628a\u4e0a\u9762\u5b9a\u4e49\u597d\u7684\u6240\u6709 State\u3001Nodes \u548c Edges \u7ec4\u88c5\u6210\u4e00\u4e2a\u5b8c\u6574\u7684\u3001\u53ef\u6267\u884c\u7684\u5de5\u4f5c\u6d41\u3002<\/p>\n\n\n\n<p>\u4f60\u7684\u5de5\u4f5c\u6d41\u7a0b\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n<ol>\n<li>\u5b9e\u4f8b\u5316\u4e00\u4e2a Graph\uff0c\u5e76\u5b9a\u4e49 State \u957f\u4ec0\u4e48\u6837\u3002<\/li>\n\n\n\n<li>\u5411 Graph \u4e2d\u6dfb\u52a0\u8282\u70b9\uff1a<code>graph.add_node(\"\u8282\u70b9\u540d\", \u8282\u70b9\u51fd\u6570)<\/code>\u3002<\/li>\n\n\n\n<li>\u5411 Graph \u4e2d\u6dfb\u52a0\u8fb9\uff1a\n<ul>\n<li>\u8bbe\u7f6e\u8d77\u59cb\u70b9\uff1a<code>graph.set_entry_point(\"\u8d77\u59cb\u8282\u70b9\u540d\")<\/code>\u3002<\/li>\n\n\n\n<li>\u6dfb\u52a0\u666e\u901a\u8fb9\uff1a<code>graph.add_edge(\"\u8282\u70b9A\", \"\u8282\u70b9B\")<\/code>\u3002<\/li>\n\n\n\n<li>\u6dfb\u52a0\u6761\u4ef6\u8fb9\uff1a<code>graph.add_conditional_edges(\"\u6765\u6e90\u8282\u70b9\", \u8def\u7531\u51fd\u6570, {\"\u8fd4\u56de\u503cA\": \"\u53bb\u8282\u70b9X\", \"\u8fd4\u56de\u503cB\": \"\u53bb\u8282\u70b9Y\"})<\/code>\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7f16\u8bd1 Graph\uff1a<code>app = graph.compile()<\/code>\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u7f16\u8bd1\u5b8c\u6210\u540e\uff0c\u4f60\u5c31\u5f97\u5230\u4e86\u4e00\u4e2a\u53ef\u4ee5\u6267\u884c\u7684 AI \u5e94\u7528\u3002\u4f60\u53ea\u9700\u8981\u8c03\u7528<code>app.stream({\"\u521d\u59cb\u8f93\u5165\": \"...\"})<\/code>\uff0c\u8fd9\u4e2a\u590d\u6742\u7684\u3001\u53ef\u5faa\u73af\u7684\u3001\u6709\u72b6\u6001\u7684\u6d41\u7a0b\u5c31\u4f1a\u81ea\u52a8\u8fd0\u8f6c\u8d77\u6765\uff0c\u800c\u4e14\u6bcf\u4e00\u6b65\u7684\u72b6\u6001\u53d8\u5316\u4f60\u90fd\u53ef\u4ee5\u6e05\u6670\u5730\u770b\u5230\uff01<\/p>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\u56db\u3001\u5b9e\u6218\u6f14\u7ec3\uff1a\u7528 LangGraph \u6253\u9020\u4e00\u4e2a \u201c\u81ea\u6211\u4fee\u6b63\u201d \u7684\u7814\u7a76\u52a9\u7406\ud83d\udd16<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u7406\u8bba\u8bf4\u4e86\u4e07\u4e07\u5343\uff0c\u4e0d\u5982\u5b9e\u6218\u770b\u4e00\u770b\uff0c\u54b1\u4eec\u4e00\u8d77\u6765\u611f\u53d7 LangGraph \u7684\u80fd\u529b\u3002\u8ba9\u6211\u4eec\u6765\u8bbe\u8ba1\u4e00\u4e2a\u6bd4\u4e4b\u524d\u66f4\u5f3a\u5927\u7684 \u201cAI \u7814\u7a76\u52a9\u7406\u201d\uff0c\u5b83\u7684\u4efb\u52a1\u662f\uff1a\u6839\u636e\u7528\u6237\u63d0\u95ee\uff0c\u64b0\u5199\u4e00\u4efd\u9ad8\u8d28\u91cf\u7684\u7814\u7a76\u62a5\u544a\u3002\u8fd9\u4e2a\u52a9\u7406\u5fc5\u987b\u5177\u5907\u641c\u7d22\u3001\u5199\u4f5c\u3001\u53cd\u601d\u3001\u4fee\u6b63\u7684\u80fd\u529b\uff0c\u800c\u4e14\u6574\u4e2a\u8fc7\u7a0b\u8981\u50cf\u4e00\u4e2a\u4e13\u4e1a\u7684\u56e2\u961f\u5728\u534f\u4f5c\u3002<\/p>\n\n\n\n<p><strong>\ud83d\udd39\u7b2c\u4e00\u6b65\uff1a\u8bbe\u8ba1 \u201c\u72b6\u6001\u201d\uff08State\uff09\u2014\u2014 \u6211\u4eec\u7684 \u201c\u624b\u63a8\u8f66\u201d<\/strong><\/p>\n\n\n\n<p>\u6211\u4eec\u7684\u624b\u63a8\u8f66\uff08State\uff09\u91cc\u9700\u8981\u88c5\u70b9\u513f\u5565\uff1f<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u6ce8\uff1a\u8fd9\u4e0d\u662f\u771f\u5b9e\u4ee3\u7801\uff0c\u53ea\u662f\u4e00\u4e2a\u7ed3\u6784\u793a\u610f\nstate = {\n    \"question\": \"\",        # \u7528\u6237\u7684\u539f\u59cb\u95ee\u9898\n    \"documents\": [],       # \u641c\u7d22\u5230\u7684\u6587\u6863\u5217\u8868\n    \"draft\": \"\",           # \u62a5\u544a\u7684\u8349\u7a3f\n    \"critique\": \"\",        # \u5bf9\u8349\u7a3f\u7684\u8bc4\u4ef7\n    \"revision_number\": 0   # \u8bb0\u5f55\u4fee\u6539\u6b21\u6570\uff0c\u9632\u6b62\u65e0\u9650\u5faa\u73af\n}<\/pre>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\ud83d\udd39\u7b2c\u4e8c\u6b65\uff1a\u8bbe\u8ba1 \u201c\u8282\u70b9\u201d\uff08Nodes\uff09\u2014\u2014 \u6211\u4eec\u7684 \u201c\u4e13\u5bb6\u56e2\u961f\u201d<\/strong><\/p>\n\n\n\n<p>\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u56e2\u961f\uff0c\u6bcf\u4e2a\u6210\u5458\u90fd\u662f\u4e00\u4e2a\u8282\u70b9\uff1a<\/p>\n\n\n\n<ol>\n<li><strong><code>search_node<\/code>\uff08\u641c\u7d22\u4e13\u5bb6\uff09<\/strong>\uff1a\n<ul>\n<li><strong>\u8f93\u5165<\/strong>\uff1aState \u4e2d\u7684 <code>question<\/code>\u3002<\/li>\n\n\n\n<li><strong>\u5de5\u4f5c<\/strong>\uff1a\u8c03\u7528\u641c\u7d22\u5f15\u64ce\uff08\u6bd4\u5982 Tavily Search API\uff09\uff0c\u627e\u5230\u76f8\u5173\u7684\u7f51\u9875\u548c\u8d44\u6599\u3002<\/li>\n\n\n\n<li><strong>\u8f93\u51fa<\/strong>\uff1a\u5c06\u627e\u5230\u7684\u6587\u6863\uff08<code>documents<\/code>\uff09\u66f4\u65b0\u5230 State \u4e2d\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><code>draft_node<\/code>\uff08\u5199\u4f5c\u4e13\u5bb6\uff09<\/strong>\uff1a\n<ul>\n<li><strong>\u8f93\u5165<\/strong>\uff1aState \u4e2d\u7684 <code>question<\/code> \u548c <code>documents<\/code>\u3002<\/li>\n\n\n\n<li><strong>\u5de5\u4f5c<\/strong>\uff1a\u8c03\u7528\u4e00\u4e2a LLM\uff08\u6bd4\u5982 GPT-5.1\uff09\uff0c\u8ba9\u5b83\u6839\u636e\u641c\u7d22\u5230\u7684\u6587\u6863\uff0c\u64b0\u5199\u4e00\u4efd\u62a5\u544a\u8349\u7a3f\u3002<\/li>\n\n\n\n<li><strong>\u8f93\u51fa<\/strong>\uff1a\u5c06\u751f\u6210\u7684 <code>draft<\/code> \u66f4\u65b0\u5230 State \u4e2d\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong><code>critique_node<\/code>\uff08\u5ba1\u6838\u4e13\u5bb6\uff09<\/strong>\uff1a\n<ul>\n<li><strong>\u8f93\u5165<\/strong>\uff1aState \u4e2d\u7684 <code>question<\/code> \u548c <code>draft<\/code>\u3002<\/li>\n\n\n\n<li><strong>\u5de5\u4f5c<\/strong>\uff1a\u8c03\u7528\u53e6\u4e00\u4e2a LLM\uff08\u662f\u7684\uff0c\u53ef\u4ee5\u6709\u591a\u4e2a LLM\uff01\uff09\uff0c\u626e\u6f14\u4e00\u4e2a\u6311\u5254\u7684 \u201c\u5ba1\u7a3f\u4eba\u201d\uff0c\u5bf9\u8349\u7a3f\u8fdb\u884c\u6279\u5224\u6027\u8bc4\u4f30\u3002\u8bc4\u4f30\u5b83\u662f\u5426\u56de\u7b54\u4e86\u95ee\u9898\uff1f\u8bba\u636e\u662f\u5426\u5145\u5206\uff1f\u7ed3\u6784\u662f\u5426\u6e05\u6670\uff1f<\/li>\n\n\n\n<li><strong>\u8f93\u51fa<\/strong>\uff1a\u5c06 <code>critique<\/code>\uff08\u5ba1\u6838\u610f\u89c1\uff09\u66f4\u65b0\u5230 State \u4e2d\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<ol start=\"4\">\n<li><strong><code>rewrite_node<\/code>\uff08\u4fee\u6539\u4e13\u5bb6\uff09<\/strong>\uff1a\n<ul>\n<li><strong>\u8f93\u5165<\/strong>\uff1aState \u4e2d\u7684 <code>question<\/code>\u3001<code>draft<\/code> \u548c <code>critique<\/code>\u3002<\/li>\n\n\n\n<li><strong>\u5de5\u4f5c<\/strong>\uff1a\u8c03\u7528 LLM\uff0c\u544a\u8bc9\u5b83\uff1a\u201c\u8fd9\u662f\u539f\u59cb\u95ee\u9898\uff0c\u8fd9\u662f\u7b2c\u4e00\u7248\u8349\u7a3f\uff0c\u8fd9\u662f\u5bf9\u8349\u7a3f\u7684\u4fee\u6539\u610f\u89c1\uff0c\u8bf7\u4f60\u6839\u636e\u4fee\u6539\u610f\u89c1\u91cd\u5199\u4e00\u4efd\u66f4\u597d\u7684\u3002\u201d<\/li>\n\n\n\n<li><strong>\u8f93\u51fa<\/strong>\uff1a\u5c06\u65b0\u7684 <code>draft<\/code> \u66f4\u65b0\u56de State \u4e2d\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\ud83d\udd39\u7b2c\u4e09\u6b65\uff1a\u8bbe\u8ba1 \u201c\u8fb9\u201d\uff08Edges\uff09\u2014\u2014 \u8bbe\u8ba1\u6211\u4eec\u7684 \u201c\u5de5\u4f5c\u6d41\u7a0b\u56fe\u201d<\/strong><\/p>\n\n\n\n<p>\u8fd9\u662f\u6700\u5173\u952e\u7684\u4e00\u6b65\uff0c\u6211\u4eec\u8981\u753b\u51fa\u8fd9\u5f20\u590d\u6742\u7684\u5730\u56fe\uff01<\/p>\n\n\n\n<ol>\n<li><strong>\u8d77\u59cb\u70b9<\/strong>\uff1a\n<ul>\n<li>\u6d41\u7a0b\u4ece <code>search_node<\/code> \u5f00\u59cb\u3002<code>graph.set_entry_point(\"search_node\")<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u666e\u901a\u8fb9<\/strong>\uff1a\n<ul>\n<li><code>search_node<\/code> \u5b8c\u6210\u540e\uff0c\u5fc5\u7136\u8981\u53bb <code>draft_node<\/code>\u3002<code>graph.add_edge(\"search_node\", \"draft_node\")<\/code><\/li>\n\n\n\n<li><code>draft_node<\/code> \u5b8c\u6210\u540e\uff0c\u5fc5\u7136\u8981\u53bb <code>critique_node<\/code> \u8fdb\u884c\u5ba1\u6838\u3002<code>graph.add_edge(\"draft_node\", \"critique_node\")<\/code><\/li>\n\n\n\n<li><code>rewrite_node<\/code> \u5b8c\u6210\u540e\uff0c\u4e5f\u8981\u53bb <code>critique_node<\/code> \u91cd\u65b0\u5ba1\u6838\u3002<code>graph.add_edge(\"rewrite_node\", \"critique_node\")<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6761\u4ef6\u8fb9\uff08\u91cd\u8981\uff09<\/strong>\uff1a\n<ul>\n<li><code>critique_node<\/code> \u5b8c\u6210\u540e\uff0c\u5c31\u662f\u6211\u4eec\u7684\u5927\u578b\u4ea4\u901a\u67a2\u7ebd\u4e86\uff01\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u8def\u7531\u51fd\u6570 <code>decide_next_step<\/code>\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">def decide_next_step(state):\n    revision_number = state[\"revision_number\"]\n    if revision_number > 3:  # \u9632\u6b62\u65e0\u9650\u5faa\u73af\uff0c\u6700\u591a\u4fee\u65393\u6b21\n        return \"end\"\n\n    critique = state[\"critique\"]\n    if \"\u62a5\u544a\u8d28\u91cf\u5f88\u9ad8\" in critique:  # \u5047\u8bbeLLM\u4f1a\u8f93\u51fa\u7c7b\u4f3c\u7684\u8bdd\n        return \"end\"  # \u5ba1\u6838\u901a\u8fc7\uff0c\u7ed3\u675f\n    else:\n        # \u5ba1\u6838\u4e0d\u901a\u8fc7\uff0c\u9700\u8981\u4fee\u6539\n        return \"rewrite_node\"  # \u53bb\u91cd\u5199\u8282\u70b9<\/pre>\n\n\n\n<p>\u7136\u540e\u628a\u8fd9\u4e2a\u8def\u7531\u903b\u8f91\u6dfb\u52a0\u5230\u56fe\u4e2d\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">graph.add_conditional_edges(\n    \"critique_node\",\n    decide_next_step,\n    {\"end\": END, \"rewrite_node\": \"rewrite_node\"}\n)<\/pre>\n\n\n\n<p>\uff08END \u662f LangGraph \u4e2d\u8868\u793a\u6d41\u7a0b\u7ed3\u675f\u7684\u7279\u6b8a\u8282\u70b9\uff09<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"709\" height=\"1024\" src=\"https:\/\/92it.top\/wp-content\/uploads\/2026\/02\/image-49-709x1024.png\" alt=\"\" class=\"wp-image-20359\" style=\"width:558px;height:auto\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2026\/02\/image-49-709x1024.png 709w, https:\/\/92it.top\/wp-content\/uploads\/2026\/02\/image-49-208x300.png 208w, https:\/\/92it.top\/wp-content\/uploads\/2026\/02\/image-49-768x1109.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2026\/02\/image-49-1063x1536.png 1063w, https:\/\/92it.top\/wp-content\/uploads\/2026\/02\/image-49-830x1199.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2026\/02\/image-49-230x332.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2026\/02\/image-49-350x506.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2026\/02\/image-49-480x693.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2026\/02\/image-49.png 1069w\" sizes=\"(max-width: 709px) 100vw, 709px\" \/><\/figure><\/div>\n\n\n<p>\u3000\u3000<\/p>\n\n\n\n<p><strong>\ud83d\udd39\u7b2c\u56db\u6b65\uff1a\u7ec4\u88c5\u5e76\u8fd0\u884c\uff01<\/strong><\/p>\n\n\n\n<p>\u628a\u4ee5\u4e0a\u6240\u6709\u90fd\u7ec4\u88c5\u5230 Graph \u5bf9\u8c61\u91cc\uff0c\u7136\u540e\u7f16\u8bd1\u3002\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u770b\u770b\u5f53\u7528\u6237\u63d0\u95ee \u201cLangGraph \u662f\u4ec0\u4e48\uff1f\u201d \u65f6\uff0c\u6574\u4e2a\u6d41\u7a0b\u662f\u5982\u4f55\u8fd0\u8f6c\u7684\uff1a<\/p>\n\n\n\n<ol>\n<li><strong>[\u542f\u52a8]<\/strong> -> <code>State = {\"question\": \"LangGraph\u662f\u4ec0\u4e48\uff1f\", ...}<\/code><\/li>\n\n\n\n<li><strong>\ud83d\udd35<\/strong> <code>search_node<\/code>\uff1a\u641c\u7d22\u5173\u4e8e LangGraph \u7684\u6587\u7ae0\uff0c\u628a\u7ed3\u679c\u653e\u8fdb <code>documents<\/code>\u3002<\/li>\n\n\n\n<li><strong>\ud83d\udd35<\/strong> <code>draft_node<\/code>\uff1a\u6839\u636e <code>documents<\/code> \u5199\u51fa\u7b2c\u4e00\u7248\u8349\u7a3f\uff0c\u66f4\u65b0 <code>draft<\/code>\u3002<\/li>\n\n\n\n<li><strong>\ud83d\udd35<\/strong> <code>critique_node<\/code>\uff1a\u5ba1\u7a3f\u4eba LLM \u770b\u4e86\u8349\u7a3f\uff0c\u89c9\u5f97 \u201c\u5b9a\u4e49\u4e0d\u591f\u6e05\u6670\uff0c\u7f3a\u5c11\u4f8b\u5b50\u201d\uff0c\u628a\u8fd9\u4e2a\u610f\u89c1\u66f4\u65b0\u5230 <code>critique<\/code>\u3002<\/li>\n\n\n\n<li><strong>\ud83d\udea6<\/strong> <code>decide_next_step<\/code>\uff08\u6761\u4ef6\u8fb9\uff09\uff1a\u8def\u7531\u51fd\u6570\u68c0\u67e5 <code>critique<\/code>\uff0c\u53d1\u73b0\u4e0d\u901a\u8fc7 -> \u51b3\u5b9a\u53bb <code>rewrite_node<\/code>\u3002<\/li>\n\n\n\n<li><strong>\ud83d\udd04<\/strong> <code>rewrite_node<\/code>\uff1a\u4fee\u6539\u4e13\u5bb6 LLM \u770b\u5230\u4e86\u8349\u7a3f\u548c\u4fee\u6539\u610f\u89c1\uff0c\u91cd\u5199\u4e86\u4e00\u7248\u66f4\u6e05\u6670\u7684\uff0c\u66f4\u65b0\u4e86 <code>draft<\/code>\u3002<\/li>\n\n\n\n<li><strong>\ud83d\udd35<\/strong> <code>critique_node<\/code>\uff1a\u5ba1\u7a3f\u4eba\u518d\u6b21\u5ba1\u6838\u65b0\u8349\u7a3f\uff0c\u89c9\u5f97 \u201c\u597d\u591a\u4e86\uff0c\u4f46\u53ef\u4ee5\u518d\u52a0\u4e00\u4e2a\u5bf9\u6bd4 LangChain \u7684\u8868\u683c\u201d\uff0c\u66f4\u65b0 <code>critique<\/code>\u3002<\/li>\n\n\n\n<li><strong>\ud83d\udea6<\/strong> <code>decide_next_step<\/code>\uff08\u6761\u4ef6\u8fb9\uff09\uff1a\u8def\u7531\u51fd\u6570\u518d\u6b21\u68c0\u67e5\uff0c\u8fd8\u662f\u4e0d\u901a\u8fc7 -> \u518d\u6b21\u51b3\u5b9a\u53bb <code>rewrite_node<\/code>\u3002<\/li>\n\n\n\n<li><strong>\ud83d\udd04<\/strong> <code>rewrite_node<\/code>\uff1a\u518d\u6b21\u4fee\u6539\u8349\u7a3f&#8230;<\/li>\n<\/ol>\n\n\n\n<ol start=\"10\">\n<li>\u2026\u2026 \u8fd9\u4e2a \u201c\u91cd\u5199 &#8211; \u5ba1\u6838\u201d \u7684\u5faa\u73af\u53ef\u80fd\u4f1a\u6301\u7eed\u51e0\u6b21\u2026<\/li>\n\n\n\n<li>\ud83d\udd35 <code>critique_node<\/code>\uff1a\u8fd9\u4e00\u6b21\uff0c\u5ba1\u7a3f\u4eba LLM \u8bf4\uff1a\u201c\u62a5\u544a\u8d28\u91cf\u5f88\u9ad8\uff0c\u9610\u8ff0\u6e05\u6670\uff0c\u4f8b\u5b50\u751f\u52a8\u3002\u201d<\/li>\n\n\n\n<li>\ud83d\udea6 <code>decide_next_step<\/code>\uff08\u6761\u4ef6\u8fb9\uff09\uff1a\u8def\u7531\u51fd\u6570\u68c0\u67e5\u5230 \u201c\u8d28\u91cf\u5f88\u9ad8\u201d -> \u51b3\u5b9a\u53bb <code>end<\/code>\u3002<\/li>\n\n\n\n<li>\u2705 <strong>[\u7ed3\u675f]<\/strong>\uff1a\u6d41\u7a0b\u7ed3\u675f\uff0c\u6700\u7ec8\u7684 <code>draft<\/code> \u5c31\u662f\u9ad8\u8d28\u91cf\u7684\u6210\u54c1\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u8fd9\u91cc\uff0c\u901a\u8fc7 LangGraph\uff0c\u6211\u4eec\u6784\u5efa\u4e86\u4e00\u4e2a\u62e5\u6709 \u201c\u81ea\u6211\u53cd\u601d\u201d \u548c \u201c\u8fed\u4ee3\u6539\u8fdb\u201d \u80fd\u529b\u7684 AI 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&#8211; \u8349\u62df &#8211; \u6279\u5224 &#8211; \u91cd\u5199\u201d \u7684\u5faa\u73af\u3002\u8fd9\u79cd\u6d1e\u5bdf\u529b\u5bf9\u4e8e\u4ea7\u54c1\u7ecf\u7406\u800c\u8a00\uff0c\u5b9e\u5c5e\u53ef\u8d35\u3002<\/li>\n\n\n\n<li><strong>\u7406\u89e3\u667a\u80fd\u7684\u672c\u8d28<\/strong>\uff1aLangGraph \u63ed\u793a\u4e86\uff0c\u9ad8\u7ea7\u7684 \u201c\u667a\u80fd\u201d \u884c\u4e3a\uff0c\u5f88\u591a\u65f6\u5019\u53ef\u4ee5\u88ab\u62c6\u89e3\u4e3a\uff1a\u4e00\u4e2a\u5171\u4eab\u7684\u72b6\u6001 + \u4e00\u7cfb\u5217\u4e13\u4e1a\u5316\u7684\u6280\u80fd\u6a21\u5757 + \u4e00\u5957\u7075\u6d3b\u7684\u51b3\u7b56\u89c4\u5219\u3002\u8fd9\u4e0d\u4ec5\u662f\u6784\u5efa AI \u7684\u8303\u5f0f\uff0c\u751a\u81f3\u53ef\u4ee5\u7528\u6765\u53cd\u601d\u6211\u4eec\u4eba\u7c7b\u81ea\u5df1\u7684\u5b66\u4e60\u548c\u5de5\u4f5c\u65b9\u5f0f\u3002\u6211\u4eec\u662f\u5982\u4f55\u901a\u8fc7 \u201c\u8bd5\u9519 &#8211; \u53cd\u601d &#8211; \u4fee\u6b63\u201d 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\u4e0a\u4e0a\u5468\u6211\u4eec\u804a\u4e86\u804a LangChain\uff0c\u6211\u4eec\u628a LangChain \u6bd4\u4f5c\u4e00\u4e2a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/20356"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=20356"}],"version-history":[{"count":2,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/20356\/revisions"}],"predecessor-version":[{"id":20360,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/20356\/revisions\/20360"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=20356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=20356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=20356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}