{"id":1234,"date":"2024-04-27T21:31:52","date_gmt":"2024-04-27T21:31:52","guid":{"rendered":"https:\/\/www.nicekj.com\/?p=1234"},"modified":"2024-04-27T21:32:42","modified_gmt":"2024-04-27T21:32:42","slug":"jinghuabijiwuendaxlangchainshiyonglangchaingoujianyushujuduihuadeliaotianjiqirenshang","status":"publish","type":"post","link":"https:\/\/www.nicekj.com\/jinghuabijiwuendaxlangchainshiyonglangchaingoujianyushujuduihuadeliaotianjiqirenshang.html","title":{"rendered":"\u7cbe\u534e\u7b14\u8bb0\uff1a\u5434\u6069\u8fbe x LangChain \u300a\u4f7f\u7528LangChain\u6784\u5efa\u4e0e\u6570\u636e\u5bf9\u8bdd\u7684\u804a\u5929\u673a\u5668\u4eba\u300b\uff08\u4e0a\uff09"},"content":{"rendered":"<p>\u5927\u578b\u8bed\u8a00\u6a21\u578b\uff08LLM\uff09\u53ef\u4ee5\u56de\u7b54\u5404\u79cd\u7c7b\u578b\u7684\u95ee\u9898\uff0c\u4f46\u6709\u4e00\u4e2a\u660e\u663e\u7684\u5c40\u9650\uff0c\u90a3\u5c31\u662f\uff1a<\/p>\n<p><strong>LLM\u53ea\u4e86\u89e3\u8bad\u7ec3\u8fc7\u7684\u5185\u5bb9\uff0c\u800c\u4e0d\u4e86\u89e3\u4f60\u7684\u4e2a\u4eba\u6570\u636e<\/strong>\u3002<\/p>\n<p>\u6bd4\u5982\uff0c<\/p>\n<ul>\n<li>\u4f60\u6240\u5728\u516c\u53f8\u5185\u90e8\u7684\u4e13\u6709\u6587\u6863<\/li>\n<li>LLM\u8bad\u7ec3\u5b8c\u6210\u540e\u65b0\u4ea7\u751f\u7684\u6570\u636e<\/li>\n<\/ul>\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u5728\u8fd9\u95e8\u8bfe\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u6df1\u5165\u7814\u7a76LangChain\u7684\u4e00\u4e2a\u5e7f\u53d7\u6b22\u8fce\u7684\u7528\u4f8b\uff1a<\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528LangChain\u4e0e\u4f60\u7684\u6570\u636e\u8fdb\u884c\u5bf9\u8bdd<\/strong>\u3002<\/p>\n<p>\u6211\u4eec\u5047\u8bbe\u4f60\u5df2\u7ecf\u638c\u63e1\u4e86LangChain\u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u5982\u679c\u4f60\u8fd8\u4e0d\u4e86\u89e3LangChain\u662f\u4ec0\u4e48\uff0c\u6b22\u8fce\u5148\u9605\u8bfb\u4ee5\u4e0b\u4e24\u7bc7\u6587\u7ae0\uff1a<\/p>\n<ul>\n<li><a href=\"https:\/\/link.juejin.cn?target=https%3A%2F%2Fmp.weixin.qq.com%2Fs%2FKrFV-fuP2MI3HQGmEM1sUA\" target=\"_blank\" title=\"https:\/\/mp.weixin.qq.com\/s\/KrFV-fuP2MI3HQGmEM1sUA\" ref=\"nofollow noopener noreferrer\" rel=\"noopener\">\u7cbe\u534e\u7b14\u8bb0\uff1a\u5434\u6069\u8fbe x LangChain\u300a\u57fa\u4e8eLangChain\u7684\u5927\u8bed\u8a00\u6a21\u578b\u5e94\u7528\u5f00\u53d1\u300b(\u4e0a)<\/a><\/li>\n<li><a href=\"https:\/\/link.juejin.cn?target=https%3A%2F%2Fmp.weixin.qq.com%2Fs%2FsgbQPfU0IEerzB3TaGL4vA\" target=\"_blank\" title=\"https:\/\/mp.weixin.qq.com\/s\/sgbQPfU0IEerzB3TaGL4vA\" ref=\"nofollow noopener noreferrer\" rel=\"noopener\">\u7cbe\u534e\u7b14\u8bb0\uff1a\u5434\u6069\u8fbe x LangChain\u300a\u57fa\u4e8eLangChain\u7684\u5927\u8bed\u8a00\u6a21\u578b\u5e94\u7528\u5f00\u53d1\u300b(\u4e0b)<\/a><\/li>\n<\/ul>\n<h1 data-id=\"heading-0\">\u6587\u6863\u52a0\u8f7d<\/h1>\n<h2 data-id=\"heading-1\">\u6587\u6863\u52a0\u8f7d\u5668\u7684\u4ecb\u7ecd<\/h2>\n<p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.nicekj.com\/wp-content\/uploads\/replace\/511cacc30b7662ddd0441cc7cc646cc8.png\" alt=\"\u7cbe\u534e\u7b14\u8bb0\uff1a\u5434\u6069\u8fbe x LangChain \u300a\u4f7f\u7528LangChain\u6784\u5efa\u4e0e\u6570\u636e\u5bf9\u8bdd\u7684\u804a\u5929\u673a\u5668\u4eba\u300b\uff08\u4e0a\uff09\" \/><\/figure>\n<\/p>\n<p><strong>\u6587\u6863\u52a0\u8f7d\u5668\u7684\u4f5c\u7528\uff0c\u662f\u5c06\u4e0d\u540c\u683c\u5f0f\u548c\u6765\u6e90\u7684\u6570\u636e\u52a0\u8f7d\u5230\u6807\u51c6\u7684\u6587\u6863\u5bf9\u8c61\u4e2d\uff0c\u5305\u62ec\u5185\u5bb9\u672c\u8eab\u4ee5\u53ca\u5173\u8054\u7684\u5143\u6570\u636e<\/strong>\u3002<\/p>\n<p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.nicekj.com\/wp-content\/uploads\/replace\/ac5cd654584842a700ea87883fcec2b0.png\" alt=\"\u7cbe\u534e\u7b14\u8bb0\uff1a\u5434\u6069\u8fbe x LangChain \u300a\u4f7f\u7528LangChain\u6784\u5efa\u4e0e\u6570\u636e\u5bf9\u8bdd\u7684\u804a\u5929\u673a\u5668\u4eba\u300b\uff08\u4e0a\uff09\" \/><\/figure>\n<\/p>\n<p>LangChain\u63d0\u4f9b\u4e86\u591a\u79cd\u7c7b\u578b\u7684\u6587\u6863\u52a0\u8f7d\u5668\uff0c\u7528\u4e8e\u5904\u7406\u975e\u7ed3\u6784\u5316\u6570\u636e\uff0c\u6839\u636e\u6570\u636e\u6765\u6e90\u7684\u4e0d\u540c\u5927\u81f4\u53ef\u5206\u4e3a\uff1a<\/p>\n<ul>\n<li>\n<p>\u516c\u5171\u6570\u636e\u6e90\u52a0\u8f7d\u5668\uff0c\u5982YouTube\u3001Twitter\uff1b<\/p>\n<\/li>\n<li>\n<p>\u4e13\u6709\u6570\u636e\u6e90\u52a0\u8f7d\u5668\uff0c\u5982Figma\u3001Notion\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u6587\u6863\u52a0\u8f7d\u5668\u4e5f\u53ef\u4ee5\u52a0\u8f7d\u7ed3\u6784\u5316\u6570\u636e\uff0c\u6bd4\u5982\u57fa\u4e8e\u8868\u683c\u4e2d\u5305\u542b\u7684\u6587\u672c\u6570\u636e\uff0c\u5bf9\u95ee\u9898\u8fdb\u884c\u56de\u7b54\u6216\u8bed\u4e49\u641c\u7d22\u3002<\/p>\n<p>\u8fd9\u79cd\u6280\u672f\u6211\u4eec\u79f0\u4e4b\u4e3a\u68c0\u7d22\u589e\u5f3a\u751f\u6210\uff08RAG\uff0cRetrieval-Augmented Generation\uff09\u3002<\/p>\n<p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.nicekj.com\/wp-content\/uploads\/replace\/ecb3dcf36608dc754e9457a119f3189f.png\" alt=\"\u7cbe\u534e\u7b14\u8bb0\uff1a\u5434\u6069\u8fbe x LangChain \u300a\u4f7f\u7528LangChain\u6784\u5efa\u4e0e\u6570\u636e\u5bf9\u8bdd\u7684\u804a\u5929\u673a\u5668\u4eba\u300b\uff08\u4e0a\uff09\" \/><\/figure>\n<\/p>\n<p><strong>\u5728RAG\u4e2d\uff0cLLM\u4f1a\u4ece\u5916\u90e8\u6570\u636e\u96c6\u4e2d\u68c0\u7d22\u4e0a\u4e0b\u6587\u6587\u6863\uff0c\u4f5c\u4e3a\u5176\u6267\u884c\u7684\u4e00\u90e8\u5206\uff0c\u8fd9\u5bf9\u4e8e\u8be2\u95ee\u7279\u5b9a\u6587\u6863\u7684\u95ee\u9898\u975e\u5e38\u6709\u7528<\/strong>\u3002<\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u6765\u5b9e\u9645\u4f7f\u7528\u5176\u4e2d\u7684\u4e00\u4e9b\u6587\u6863\u52a0\u8f7d\u5668\u3002<\/p>\n<h2 data-id=\"heading-2\">\u52a0\u8f7dPDF\u6587\u6863<\/h2>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">ini<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-ini code-block-extension-codeShowNum\" lang=\"ini\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-comment\"># \u5bfc\u5165PyPDFLoader\u6587\u6863\u52a0\u8f7d\u5668<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\">from langchain.document_loaders import PyPDFLoader<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><span class=\"hljs-comment\"># \u5c06\u4f4d\u4e8e\u7279\u5b9a\u8def\u5f84\u4e0b\u7684PDF\u6587\u6863\u653e\u5165\u5230\u52a0\u8f7d\u5668\u4e2d<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\"><span class=\"hljs-attr\">loader<\/span> = PyPDFLoader(<span class=\"hljs-string\">\"docs\/cs229_lectures\/MachineLearning-Lecture01.pdf\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\"><span class=\"hljs-comment\"># \u52a0\u8f7dPDF\u6587\u6863<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\"><span class=\"hljs-attr\">pages<\/span> = loader.load()<\/span>\n<\/code><\/pre>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u8fd9\u5c06\u52a0\u8f7d\u4e00\u7cfb\u5217\u7684\u6587\u6863\u3002\u4ee5\u9875\u9762\u4e3a\u5355\u4f4d\uff0c\u6bcf\u4e2a\u9875\u9762\u90fd\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u6587\u6863\u3002<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">python<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-python code-block-extension-codeShowNum\" lang=\"python\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-comment\"># PDF\u7684\u603b\u9875\u6570<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-built_in\">len<\/span>(pages)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><span class=\"hljs-comment\"># 22<\/span><\/span>\n<\/code><\/pre>\n<p>\u6bcf\u4e2a\u6587\u6863\u90fd\u5305\u542b\u300c\u9875\u9762\u5185\u5bb9\u300d\u548c\u300c\u4e0e\u6587\u6863\u5173\u8054\u7684\u5143\u6570\u636e\u300d\u3002<\/p>\n<p>\u9875\u9762\u5185\u5bb9\uff1a<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">bash<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-bash code-block-extension-codeShowNum\" lang=\"bash\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-comment\"># \u4ec5\u6253\u5370\u524d500\u4e2a\u5b57\u7b26<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-built_in\">print<\/span>(page.page_content[0:500]) <\/span>\n<\/code><\/pre>\n<blockquote>\n<p>MachineLearning-Lecture01<br>\nInstructor (Andrew Ng):  Okay. Good morning. Welcome to CS229, the machine\nlearning class. So what I wanna do today is ju st spend a little time going over the logistics\nof the class, and then we&#8217;ll start to  talk a bit about machine learning.<br>\nBy way of introduction, my name&#8217;s  Andrew Ng and I&#8217;ll be instru ctor for this class. And so\nI personally work in machine learning, and I&#8217; ve worked on it for about 15 years now, and\nI actually think that machine learning i<\/p>\n<\/blockquote>\n<p>\u5143\u6570\u636e\uff1a<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">shell<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-shell code-block-extension-codeShowNum\" lang=\"shell\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\">page.metadata<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-meta prompt_\"># <\/span><span class=\"bash\"><span class=\"hljs-built_in\">source<\/span>: \u6e90\u4fe1\u606f\uff0c\u8fd9\u91cc\u5bf9\u5e94PDF\u7684\u6587\u4ef6\u540d<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><span class=\"hljs-meta prompt_\"># <\/span><span class=\"bash\">page\uff1a\u9875\u7801\u4fe1\u606f\uff0c\u8fd9\u91cc\u5bf9\u5e94PDF\u7684\u9875\u7801<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\"><span class=\"hljs-meta prompt_\"># <\/span><span class=\"bash\">{<span class=\"hljs-string\">'source'<\/span>: <span class=\"hljs-string\">'docs\/cs229_lectures\/MachineLearning-Lecture01.pdf'<\/span>, <span class=\"hljs-string\">'page'<\/span>: 0}<\/span><\/span>\n<\/code><\/pre>\n<h2 data-id=\"heading-3\">\u52a0\u8f7dYouTube\u89c6\u9891<\/h2>\n<h3 data-id=\"heading-4\">\u6b65\u9aa41\uff1a\u5bfc\u5165\u51e0\u4e2a\u5173\u952e\u90e8\u5206\uff0c\u5305\u62ec<\/h3>\n<ul>\n<li>\n<p>YouTube\u97f3\u9891\u52a0\u8f7d\u5668\uff1a\u4eceYouTube\u89c6\u9891\u52a0\u8f7d\u97f3\u9891\u6587\u4ef6<\/p>\n<\/li>\n<li>\n<p>OpenAI Whisper\u89e3\u6790\u5668\uff1a\u4f7f\u7528OpenAI\u7684Whisper\u6a21\u578b(\u4e00\u4e2a\u8bed\u97f3\u8f6c\u6587\u672c\u7684\u6a21\u578b)\uff0c\u5c06YouTube\u97f3\u9891\u8f6c\u6362\u4e3a\u6211\u4eec\u53ef\u4ee5\u5904\u7406\u7684\u6587\u672c\u683c\u5f0f<\/p>\n<\/li>\n<\/ul>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">javascript<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-javascript code-block-extension-codeShowNum\" lang=\"javascript\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-keyword\">from<\/span> langchain.<span class=\"hljs-property\">document_loaders<\/span>.<span class=\"hljs-property\">generic<\/span> <span class=\"hljs-keyword\">import<\/span> <span class=\"hljs-title class_\">GenericLoader<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-keyword\">from<\/span> langchain.<span class=\"hljs-property\">document_loaders<\/span>.<span class=\"hljs-property\">parsers<\/span> <span class=\"hljs-keyword\">import<\/span> <span class=\"hljs-title class_\">OpenAIWhisperParser<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><span class=\"hljs-keyword\">from<\/span> langchain.<span class=\"hljs-property\">document_loaders<\/span>.<span class=\"hljs-property\">blob_loaders<\/span>.<span class=\"hljs-property\">youtube_audio<\/span> <span class=\"hljs-keyword\">import<\/span> <span class=\"hljs-title class_\">YoutubeAudioLoader<\/span><\/span>\n<\/code><\/pre>\n<h3 data-id=\"heading-5\">\u6b65\u9aa42\uff1a\u6307\u5b9aURL\u53ca\u4fdd\u5b58\u97f3\u9891\u6587\u4ef6\u7684\u76ee\u5f55\uff0c\u521b\u5efa\u7ec4\u5408\u4e86\u6b65\u9aa41\u4e24\u4e2a\u5173\u952e\u90e8\u5206\u7684\u901a\u7528\u52a0\u8f7d\u5668\u5e76\u6267\u884c\u52a0\u8f7d<\/h3>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">ini<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-ini code-block-extension-codeShowNum\" lang=\"ini\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-attr\">url<\/span>=<span class=\"hljs-string\">\"https:\/\/www.youtube.com\/watch?v=jGwO_UgTS7I\"<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-attr\">save_dir<\/span>=<span class=\"hljs-string\">\"docs\/youtube\/\"<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><span class=\"hljs-attr\">loader<\/span> = GenericLoader(<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">    YoutubeAudioLoader(<span class=\"hljs-section\">[url]<\/span>,save_dir),<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\">    OpenAIWhisperParser()<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\">)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\"><span class=\"hljs-attr\">docs<\/span> = loader.load()<\/span>\n<\/code><\/pre>\n<h3 data-id=\"heading-6\">\u6b65\u9aa43\uff1a\u67e5\u770b\u52a0\u8f7d\u5b8c\u6210\u7684\u89c6\u9891\u6587\u7a3f<\/h3>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">css<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-css code-block-extension-codeShowNum\" lang=\"css\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\">docs<span class=\"hljs-selector-attr\">[0]<\/span><span class=\"hljs-selector-class\">.page_content<\/span><span class=\"hljs-selector-attr\">[0:500]<\/span><\/span>\n<\/code><\/pre>\n<p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.nicekj.com\/wp-content\/uploads\/replace\/356f99ca6b65e7fe8f75e4922a813a01.png\" alt=\"\u7cbe\u534e\u7b14\u8bb0\uff1a\u5434\u6069\u8fbe x LangChain \u300a\u4f7f\u7528LangChain\u6784\u5efa\u4e0e\u6570\u636e\u5bf9\u8bdd\u7684\u804a\u5929\u673a\u5668\u4eba\u300b\uff08\u4e0a\uff09\" \/><\/figure>\n<\/p>\n<h2 data-id=\"heading-7\">\u52a0\u8f7d\u7f51\u7edcURL<\/h2>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">ini<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-ini code-block-extension-codeShowNum\" lang=\"ini\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\">from langchain.document_loaders import WebBaseLoader<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><span class=\"hljs-attr\">loader<\/span> = WebBaseLoader(<span class=\"hljs-string\">\"https:\/\/github.com\/basecamp\/handbook\/blob\/master\/37signals-is-you.md\"<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\"><span class=\"hljs-attr\">docs<\/span> = loader.load()<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\">print(docs<span class=\"hljs-section\">[0]<\/span>.page_content<span class=\"hljs-section\">[:500]<\/span>)<\/span>\n<\/code><\/pre>\n<h1 data-id=\"heading-8\">\u6587\u6863\u5206\u5272<\/h1>\n<p>\u5728\u4e0a\u4e00\u8282\u4e2d\uff0c\u6211\u4eec\u5c06\u4e0d\u540c\u683c\u5f0f\u548c\u6765\u6e90\u7684\u6570\u636e\u52a0\u8f7d\u5230\u4e86\u6807\u51c6\u7684\u6587\u6863\u5bf9\u8c61\u4e2d\u3002\u4f46\u662f\uff0c\u8fd9\u4e9b\u6587\u6863\u7ecf\u8fc7\u8f6c\u6362\u540e\u4f9d\u7136\u5f88\u5927\uff0c\u800c\u6211\u4eec\u901a\u5e38\u53ea\u9700\u8981\u68c0\u7d22\u6587\u6863\u4e2d\u4e0e\u4e3b\u9898\u6700\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u53ef\u80fd\u53ea\u662f\u51e0\u4e2a\u6bb5\u843d\u6216\u53e5\u5b50\uff0c\u800c\u4e0d\u9700\u8981\u6574\u4e2a\u6587\u6863\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u5728\u8fd9\u4e00\u8282\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528LangChain\u7684\u6587\u672c\u5206\u5272\u5668\uff0c\u628a\u5927\u578b\u7684\u6587\u6863\u5206\u5272\u6210\u66f4\u5c0f\u7684\u5757\u3002<\/p>\n<h2 data-id=\"heading-9\">\u6587\u6863\u5206\u5272\u7684\u91cd\u8981\u6027<\/h2>\n<p><strong>\u6587\u6863\u5206\u5272\u53d1\u751f\u5728\u6570\u636e\u52a0\u8f7d\u4e4b\u540e\uff0c\u653e\u5165\u5411\u91cf\u5b58\u50a8\u4e4b\u524d<\/strong>\u3002<\/p>\n<p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.nicekj.com\/wp-content\/uploads\/replace\/9128293ea6239e8c4437990613ca32c3.png\" alt=\"\u7cbe\u534e\u7b14\u8bb0\uff1a\u5434\u6069\u8fbe x LangChain \u300a\u4f7f\u7528LangChain\u6784\u5efa\u4e0e\u6570\u636e\u5bf9\u8bdd\u7684\u804a\u5929\u673a\u5668\u4eba\u300b\uff08\u4e0a\uff09\" \/><\/figure>\n<\/p>\n<p>\u5982\u679c\u7b80\u5355\u5730\u6309\u5b57\u7b26\u957f\u5ea6\u6765\u5206\u5272\u6587\u6863\uff0c\u53ef\u80fd\u4f1a\u9020\u6210\u53e5\u5b50\u7684\u65ad\u88c2\uff0c\u5bfc\u81f4\u8bed\u4e49\u7684\u4e22\u5931\u6216\u6df7\u4e71\u3002\u8fd9\u6837\u7684\u5206\u5272\u65b9\u5f0f\uff0c\u65e0\u6cd5\u4e3a\u6211\u4eec\u6b63\u786e\u5730\u56de\u7b54\u95ee\u9898\u3002<\/p>\n<p>\u5408\u7406\u7684\u505a\u6cd5\uff0c\u662f\u5c3d\u91cf\u4fdd\u6301\u8bed\u4e49\u7684\u8fde\u8d2f\u6027\u548c\u5b8c\u6574\u6027\uff0c\u5206\u9694\u51fa\u6709\u610f\u4e49\u7684\u5757\u3002<\/p>\n<h2 data-id=\"heading-10\">\u6587\u6863\u5206\u5272\u7684\u65b9\u5f0f<\/h2>\n<p>\u5728LangChain\u4e2d\uff0c\u6240\u6709\u7684\u6587\u672c\u5206\u5272\u5668\u90fd\u9075\u5faa\u540c\u4e00\u4e2a\u539f\u7406\uff0c\u5c31\u662f\u6839\u636e\u300c\u5757\u5927\u5c0f(chunk_size)\u300d\u548c\u300c\u4e24\u4e2a\u5757\u4e4b\u95f4\u7684\u91cd\u53e0\u5927\u5c0f(chunk_overlap)\u300d\u8fdb\u884c\u5206\u5272\u3002<\/p>\n<p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.nicekj.com\/wp-content\/uploads\/replace\/c84552871f712c9192ee918f83d21be1.png\" alt=\"\u7cbe\u534e\u7b14\u8bb0\uff1a\u5434\u6069\u8fbe x LangChain \u300a\u4f7f\u7528LangChain\u6784\u5efa\u4e0e\u6570\u636e\u5bf9\u8bdd\u7684\u804a\u5929\u673a\u5668\u4eba\u300b\uff08\u4e0a\uff09\" \/><\/figure>\n<\/p>\n<p><code>chunk_size<\/code>\u6307\u7684\u662f\u6bcf\u4e2a\u5757\u5305\u542b\u7684\u5b57\u7b26\u6216Token\uff08\u5982\u5355\u8bcd\u3001\u53e5\u5b50\u7b49\uff09\u7684\u6570\u91cf\u3002<\/p>\n<p><code>chunk_overlap<\/code>\u6307\u7684\u662f\u4e24\u4e2a\u5757\u4e4b\u95f4\u5171\u4eab\u7684\u5b57\u7b26\u6216Token\u7684\u6570\u91cf\u3002chunk_overlap\u53ef\u4ee5\u5e2e\u52a9\u4fdd\u6301\u4e0a\u4e0b\u6587\u7684\u8fde\u8d2f\u6027\uff0c\u907f\u514d\u56e0\u4e3a\u5206\u5272\u800c\u4e22\u5931\u91cd\u8981\u7684\u4fe1\u606f\u3002<\/p>\n<p>LangChain\u63d0\u4f9b\u4e86\u591a\u79cd\u7c7b\u578b\u7684\u5206\u5272\u5668\uff0c\u4e3b\u8981\u5dee\u522b\u5728\u4e8e\u5982\u4f55\u786e\u5b9a\u5757\u7684\u8fb9\u754c\u3001\u5757\u7531\u54ea\u4e9b\u5b57\u7b26\u6216Token\u7ec4\u6210\u3001\u4ee5\u53ca\u5982\u4f55\u6d4b\u91cf\u5757\u7684\u5927\u5c0f\uff08\u6309\u5b57\u7b26\u8fd8\u662f\u6309Token\uff09\u3002<\/p>\n<p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.nicekj.com\/wp-content\/uploads\/replace\/dea981df0c3d6d9cf96b0c38178e73dd.png\" alt=\"\u7cbe\u534e\u7b14\u8bb0\uff1a\u5434\u6069\u8fbe x LangChain \u300a\u4f7f\u7528LangChain\u6784\u5efa\u4e0e\u6570\u636e\u5bf9\u8bdd\u7684\u804a\u5929\u673a\u5668\u4eba\u300b\uff08\u4e0a\uff09\" \/><\/figure>\n<\/p>\n<p>\u5143\u6570\u636e\uff08Metadata\uff09\u662f\u5757\u5206\u5272\u7684\u53e6\u4e00\u4e2a\u91cd\u8981\u90e8\u5206\uff0c\u6211\u4eec\u9700\u8981\u5728\u6240\u6709\u5757\u4e2d\u4fdd\u6301\u5143\u6570\u636e\u7684\u4e00\u81f4\u6027\uff0c\u540c\u65f6\u5728\u9700\u8981\u7684\u65f6\u5019\u6dfb\u52a0\u65b0\u7684\u5143\u6570\u636e\u3002<\/p>\n<h2 data-id=\"heading-11\">\u57fa\u4e8e\u5b57\u7b26\u7684\u5206\u5272<\/h2>\n<p>\u5982\u4f55\u5206\u5272\u5757\u901a\u5e38\u53d6\u51b3\u4e8e\u6211\u4eec\u6b63\u5728\u5904\u7406\u7684\u6587\u6863\u7c7b\u578b\u3002<\/p>\n<p>\u6bd4\u5982\uff0c\u5904\u7406\u4ee3\u7801\u7684\u5206\u5272\u5668\u62e5\u6709\u8bb8\u591a\u4e0d\u540c\u7f16\u7a0b\u8bed\u8a00\u7684\u5206\u9694\u7b26\uff0c\u5982Python\u3001Ruby\u3001C\u7b49\u3002\u5f53\u5206\u5272\u4ee3\u7801\u6587\u6863\u65f6\uff0c\u5b83\u4f1a\u8003\u8651\u5230\u4e0d\u540c\u7f16\u7a0b\u8bed\u8a00\u4e4b\u95f4\u7684\u5dee\u5f02\u3002<\/p>\n<h3 data-id=\"heading-12\">\u6b65\u9aa41\uff1a\u5bfc\u5165\u6587\u672c\u5206\u5272\u5668<\/h3>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">python<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-python code-block-extension-codeShowNum\" lang=\"python\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-comment\"># RecursiveCharacterTextSplitter-\u9012\u5f52\u5b57\u7b26\u6587\u672c\u5206\u5272\u5668<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-comment\"># CharacterTextSplitter-\u5b57\u7b26\u6587\u672c\u5206\u5272\u5668<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><span class=\"hljs-keyword\">from<\/span> langchain.text_splitter <span class=\"hljs-keyword\">import<\/span> RecursiveCharacterTextSplitter, CharacterTextSplitter<\/span>\n<\/code><\/pre>\n<h3 data-id=\"heading-13\">\u6b65\u9aa42\uff1a\u8bbe\u5b9a\u5757\u5927\u5c0f\u548c\u5757\u91cd\u53e0\u5927\u5c0f<\/h3>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">ini<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-ini code-block-extension-codeShowNum\" lang=\"ini\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-attr\">chunk_size<\/span> =<span class=\"hljs-number\">26<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-attr\">chunk_overlap<\/span> = <span class=\"hljs-number\">4<\/span><\/span>\n<\/code><\/pre>\n<h3 data-id=\"heading-14\">\u6b65\u9aa43\uff1a\u521d\u59cb\u5316\u6587\u672c\u5206\u5272\u5668<\/h3>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">ini<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-ini code-block-extension-codeShowNum\" lang=\"ini\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-attr\">r_splitter<\/span> = RecursiveCharacterTextSplitter(<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\">    <span class=\"hljs-attr\">chunk_size<\/span>=chunk_size,<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\">    <span class=\"hljs-attr\">chunk_overlap<\/span>=chunk_overlap<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\"><span class=\"hljs-attr\">c_splitter<\/span> = CharacterTextSplitter(<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\">    <span class=\"hljs-attr\">chunk_size<\/span>=chunk_size,<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\">    <span class=\"hljs-attr\">chunk_overlap<\/span>=chunk_overlap<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"8\">)<\/span>\n<\/code><\/pre>\n<h3 data-id=\"heading-15\">\u6b65\u9aa44\uff1a\u4f7f\u7528\u4e0d\u540c\u7684\u5206\u5272\u5668\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u5206\u5272<\/h3>\n<h4 data-id=\"heading-16\">\u9012\u5f52\u5b57\u7b26\u6587\u672c\u5206\u5272\u5668<\/h4>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">ini<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-ini code-block-extension-codeShowNum\" lang=\"ini\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-attr\">text2<\/span> = <span class=\"hljs-string\">'abcdefghijklmnopqrstuvwxyzabcdefg'<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\">r_splitter.split_text(text2)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><span class=\"hljs-comment\"># ['abcdefghijklmnopqrstuvwxyz', 'wxyzabcdefg']<\/span><\/span>\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u7b2c\u4e8c\u4e2a\u5757\u662f\u4ece\u300cwxyz\u300d\u5f00\u59cb\u7684\uff0c\u521a\u597d\u662f\u6211\u4eec\u8bbe\u5b9a\u7684\u5757\u91cd\u53e0\u5927\u5c0f\u3002<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">css<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-css code-block-extension-codeShowNum\" lang=\"css\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\">text3 = \"<span class=\"hljs-selector-tag\">a<\/span> <span class=\"hljs-selector-tag\">b<\/span> c d e f g h <span class=\"hljs-selector-tag\">i<\/span> j k l m n o <span class=\"hljs-selector-tag\">p<\/span> <span class=\"hljs-selector-tag\">q<\/span> r s t u v w x y z\"<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\">r_splitter<span class=\"hljs-selector-class\">.split_text<\/span>(text3)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"># <span class=\"hljs-selector-attr\">[<span class=\"hljs-string\">'a b c d e f g h i j k l m'<\/span>, <span class=\"hljs-string\">'l m n o p q r s t u v w x'<\/span>, <span class=\"hljs-string\">'w x y z'<\/span>]<\/span><\/span>\n<\/code><\/pre>\n<h4 data-id=\"heading-17\">\u5b57\u7b26\u6587\u672c\u5206\u5272\u5668<\/h4>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">scss<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-scss code-block-extension-codeShowNum\" lang=\"scss\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\">c_splitter<span class=\"hljs-selector-class\">.split_text<\/span>(text3)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"># <span class=\"hljs-selector-attr\">[<span class=\"hljs-string\">'a b c d e f g h i j k l m n o p q r s t u v w x y z'<\/span>]<\/span><\/span>\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u5b57\u7b26\u6587\u672c\u5206\u5272\u5668\u5b9e\u9645\u5e76\u6ca1\u6709\u5206\u5272\u8fd9\u4e2a\u5b57\u7b26\u4e32\uff0c\u8fd9\u662f\u56e0\u4e3a\u5b57\u7b26\u6587\u672c\u5206\u5272\u5668\u9ed8\u8ba4\u662f\u4ee5\u6362\u884c\u7b26\u4e3a\u5206\u9694\u7b26\u7684\uff0c\u4e3a\u6b64\uff0c\u6211\u4eec\u9700\u8981\u5c06\u5206\u9694\u7b26\u8bbe\u7f6e\u4e3a\u7a7a\u683c\u3002<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">ini<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-ini code-block-extension-codeShowNum\" lang=\"ini\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-attr\">c_splitter<\/span> = CharacterTextSplitter(<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\">    <span class=\"hljs-attr\">chunk_size<\/span>=chunk_size,<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\">    <span class=\"hljs-attr\">chunk_overlap<\/span>=chunk_overlap,<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">    <span class=\"hljs-attr\">separator<\/span> = <span class=\"hljs-string\">' '<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\">)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\">c_splitter.split_text(text3)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\"><span class=\"hljs-comment\"># ['a b c d e f g h i j k l m', 'l m n o p q r s t u v w x', 'w x y z']<\/span><\/span>\n<\/code><\/pre>\n<h3 data-id=\"heading-18\">\u6b65\u9aa45\uff1a\u9012\u5f52\u5206\u5272\u957f\u6bb5\u843d<\/h3>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">ini<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-ini code-block-extension-codeShowNum\" lang=\"ini\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-attr\">some_text<\/span> = <span class=\"hljs-string\">\"\"\"When writing documents, writers will use document structure to group content. <\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\">This can convey to the reader, which idea's are related. For example, closely related ideas <\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\">are in sentances. Similar ideas are in paragraphs. Paragraphs form a document. nn  <\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">Paragraphs are often delimited with a carriage return or two carriage returns. <\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\">Carriage returns are the \"backslash n\" you see embedded in this string. <\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\">Sentences have a period at the end, but also, have a space.<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\">and words are separated by space.\"\"\"<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"8\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"9\"><span class=\"hljs-attr\">r_splitter<\/span> = RecursiveCharacterTextSplitter(<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"10\">    <span class=\"hljs-attr\">chunk_size<\/span>=<span class=\"hljs-number\">150<\/span>,<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"11\">    <span class=\"hljs-attr\">chunk_overlap<\/span>=<span class=\"hljs-number\">0<\/span>,<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"12\">    <span class=\"hljs-attr\">separators<\/span>=[<span class=\"hljs-string\">\"nn\"<\/span>, <span class=\"hljs-string\">\"n\"<\/span>, <span class=\"hljs-string\">\" \"<\/span>, <span class=\"hljs-string\">\"\"<\/span>]<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"13\">)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"14\">r_splitter.split_text(some_text)<\/span>\n<\/code><\/pre>\n<p>\u8fd9\u91cc\uff0c\u6211\u4eec\u4f20\u5165\u4e00\u4e2a\u5206\u9694\u7b26\u5217\u8868\uff0c\u4f9d\u6b21\u4e3a\u53cc\u6362\u884c\u7b26\u3001\u5355\u6362\u884c\u7b26\u3001\u7a7a\u683c\u548c\u4e00\u4e2a\u7a7a\u5b57\u7b26\u3002<\/p>\n<p>\u8fd9\u5c31\u610f\u5473\u7740\uff0c\u5f53\u4f60\u5206\u5272\u4e00\u6bb5\u6587\u672c\u65f6\uff0c\u5b83\u4f1a\u9996\u5148\u91c7\u7528\u53cc\u6362\u884c\u7b26\u6765\u5c1d\u8bd5\u521d\u6b65\u5206\u5272\uff0c\u5e76\u89c6\u60c5\u51b5\u4f9d\u6b21\u4f7f\u7528\u5176\u4ed6\u7684\u5206\u9694\u7b26\u6765\u8fdb\u4e00\u6b65\u5206\u5272\u3002<\/p>\n<p>\u6700\u7ec8\u5206\u5272\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n<blockquote>\n<p>[&#8220;When writing documents, writers will use document structure to group content. This can convey to the reader, which idea&#8217;s are related. For example, closely related ideas are in sentances. Similar ideas are in paragraphs. Paragraphs form a document.&#8221;,<\/p>\n<p>&#8216;Paragraphs are often delimited with a carriage return or two carriage returns. Carriage returns are the &#8220;backslash n&#8221; you see embedded in this string. Sentences have a period at the end, but also, have a space.and words are separated by space.&#8217;]<\/p>\n<\/blockquote>\n<p>\u5982\u679c\u9700\u8981\u6309\u7167\u53e5\u5b50\u8fdb\u884c\u5206\u9694\uff0c\u5219\u8fd8\u8981\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u6dfb\u52a0\u4e00\u4e2a\u53e5\u53f7\u5206\u9694\u7b26\uff1a<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">ini<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-ini code-block-extension-codeShowNum\" lang=\"ini\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-attr\">r_splitter<\/span> = RecursiveCharacterTextSplitter(<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\">    <span class=\"hljs-attr\">chunk_size<\/span>=<span class=\"hljs-number\">150<\/span>,<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\">    <span class=\"hljs-attr\">chunk_overlap<\/span>=<span class=\"hljs-number\">0<\/span>,<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">    <span class=\"hljs-attr\">separators<\/span>=[<span class=\"hljs-string\">\"nn\"<\/span>, <span class=\"hljs-string\">\"n\"<\/span>, <span class=\"hljs-string\">\"(?&lt;=. )\"<\/span>, <span class=\"hljs-string\">\" \"<\/span>, <span class=\"hljs-string\">\"\"<\/span>]<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\">)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\">r_splitter.split_text(some_text)<\/span>\n<\/code><\/pre>\n<blockquote>\n<p>[&#8220;When writing documents, writers will use document structure to group content. This can convey to the reader, which idea&#8217;s are related.&#8221;,<\/p>\n<p>&#8216;For example, closely related ideas are in sentances. Similar ideas are in paragraphs. Paragraphs form a document.&#8217;,<\/p>\n<p>&#8216;Paragraphs are often delimited with a carriage return or two carriage returns.&#8217;,<\/p>\n<p>&#8216;Carriage returns are the &#8220;backslash n&#8221; you see embedded in this string.&#8217;,<\/p>\n<p>&#8216;Sentences have a period at the end, but also, have a space.and words are separated by space.&#8217;]<\/p>\n<\/blockquote>\n<p>\u8fd9\u5c31\u662f\u9012\u5f52\u5b57\u7b26\u6587\u672c\u5206\u5272\u5668\u540d\u5b57\u4e2d\u201c\u9012\u5f52\u201d\u7684\u542b\u4e49\uff0c\u603b\u7684\u6765\u8bf4\uff0c\u6211\u4eec\u66f4\u5efa\u8bae\u5728\u901a\u7528\u6587\u672c\u4e2d\u4f7f\u7528\u9012\u5f52\u5b57\u7b26\u6587\u672c\u5206\u5272\u5668\u3002<\/p>\n<h2 data-id=\"heading-19\">\u57fa\u4e8eToken\u7684\u5206\u5272<\/h2>\n<p>\u5f88\u591aLLM\u7684\u4e0a\u4e0b\u6587\u7a97\u53e3\u957f\u5ea6\u9650\u5236\u662f\u6309\u7167Token\u6765\u8ba1\u6570\u7684\u3002\u56e0\u6b64\uff0c\u4ee5LLM\u7684\u89c6\u89d2\uff0c\u6309\u7167Token\u5bf9\u6587\u672c\u8fdb\u884c\u5206\u9694\uff0c\u901a\u5e38\u53ef\u4ee5\u5f97\u5230\u66f4\u597d\u7684\u7ed3\u679c\u3002<\/p>\n<p>\u4e3a\u4e86\u7406\u89e3\u57fa\u4e8e\u5b57\u7b26\u5206\u5272\u548c\u57fa\u4e8eToken\u5206\u5272\u7684\u533a\u522b\uff0c\u6211\u4eec\u53ef\u4ee5\u7528\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\u6765\u8bf4\u660e\u3002<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">ini<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-ini code-block-extension-codeShowNum\" lang=\"ini\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\">from langchain.text_splitter import TokenTextSplitter<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\"><span class=\"hljs-attr\">text_splitter<\/span> = TokenTextSplitter(chunk_size=<span class=\"hljs-number\">1<\/span>, chunk_overlap=<span class=\"hljs-number\">0<\/span>)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><span class=\"hljs-attr\">text1<\/span> = <span class=\"hljs-string\">\"foo bar bazzyfoo\"<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">text_splitter.split_text(text1)<\/span>\n<\/code><\/pre>\n<p>\u8fd9\u91cc\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2aToken\u6587\u672c\u5206\u5272\u5668\uff0c\u5c06\u5757\u5927\u5c0f\u8bbe\u4e3a1\uff0c\u5757\u91cd\u53e0\u5927\u5c0f\u8bbe\u4e3a0\uff0c\u76f8\u5f53\u4e8e\u5c06\u4efb\u610f\u5b57\u7b26\u4e32\u5206\u5272\u6210\u4e86\u5355\u4e2aToken\u7ec4\u6210\u7684\u5217\u8868\uff0c\u6bcf\u4e2aToken\u7684\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">css<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-css code-block-extension-codeShowNum\" lang=\"css\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-selector-attr\">[<span class=\"hljs-string\">'foo'<\/span>, <span class=\"hljs-string\">' bar'<\/span>, <span class=\"hljs-string\">' b'<\/span>, <span class=\"hljs-string\">'az'<\/span>, <span class=\"hljs-string\">'zy'<\/span>, <span class=\"hljs-string\">'foo'<\/span>]<\/span><\/span>\n<\/code><\/pre>\n<p>\u56e0\u6b64\uff0cToken\u7684\u957f\u5ea6\u548c\u5b57\u7b26\u957f\u5ea6\u662f\u4e0d\u4e00\u6837\u7684\uff0cToken\u901a\u5e38\u4e3a4\u4e2a\u5b57\u7b26\u3002<\/p>\n<h2 data-id=\"heading-20\">\u5206\u5272Markdown\u6587\u6863<\/h2>\n<p><strong>\u5206\u5757\u7684\u76ee\u7684\u65e8\u5728\u5c06\u5177\u6709\u5171\u540c\u4e0a\u4e0b\u6587\u7684\u6587\u672c\u653e\u5728\u4e00\u8d77<\/strong>\u3002<\/p>\n<p>\u901a\u5e38\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u6307\u5b9a\u5206\u9694\u7b26\u6765\u8fdb\u884c\u5206\u9694\uff0c\u4f46\u6709\u4e9b\u7c7b\u578b\u7684\u6587\u6863\uff08\u4f8b\u5982 Markdown\uff09\u672c\u8eab\u5c31\u5177\u6709\u53ef\u7528\u4e8e\u5206\u5272\u7684\u7ed3\u6784\uff08\u5982\u6807\u9898\uff09\u3002<\/p>\n<p>Markdown\u6807\u9898\u6587\u672c\u5206\u5272\u5668\u4f1a\u6839\u636e\u6807\u9898\u6216\u5b50\u6807\u9898\u6765\u5206\u5272\u4e00\u4e2aMarkdown\u6587\u6863\uff0c\u5e76\u5c06\u6807\u9898\u4f5c\u4e3a\u5143\u6570\u636e\u6dfb\u52a0\u5230\u6bcf\u4e2a\u5757\u4e2d\u3002<\/p>\n<h3 data-id=\"heading-21\">\u6b65\u9aa41\uff1a\u5b9a\u4e49\u4e00\u4e2aMarkdown\u6587\u6863<\/h3>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">swift<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-swift code-block-extension-codeShowNum\" lang=\"swift\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\">from langchain.document_loaders <span class=\"hljs-keyword\">import<\/span> NotionDirectoryLoader<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\">from langchain.text_splitter <span class=\"hljs-keyword\">import<\/span> MarkdownHeaderTextSplitter<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">markdown_document <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">\"\"\"# Title<span class=\"hljs-subst\">n<\/span><span class=\"hljs-subst\">n<\/span> <span class=\"hljs-subst\"><\/span><\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\">## Chapter 1<span class=\"hljs-subst\">n<\/span><span class=\"hljs-subst\">n<\/span> <span class=\"hljs-subst\"><\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\">Hi this is Jim<span class=\"hljs-subst\">n<\/span><span class=\"hljs-subst\">n<\/span> Hi this is Joe<span class=\"hljs-subst\">n<\/span><span class=\"hljs-subst\">n<\/span> <span class=\"hljs-subst\"><\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\">### Section <span class=\"hljs-subst\">n<\/span><span class=\"hljs-subst\">n<\/span> <span class=\"hljs-subst\"><\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"8\">Hi this is Lance <span class=\"hljs-subst\">n<\/span><span class=\"hljs-subst\">n<\/span> <\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"9\">## Chapter 2<span class=\"hljs-subst\">n<\/span><span class=\"hljs-subst\">n<\/span> <span class=\"hljs-subst\"><\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"10\">Hi this is Molly\"\"\"<\/span>\n<\/code><\/pre>\n<h3 data-id=\"heading-22\">\u6b65\u9aa42\uff1a\u5b9a\u4e49\u60f3\u8981\u5206\u5272\u7684\u6807\u9898\u5217\u8868\u548c\u540d\u79f0<\/h3>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">ini<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-ini code-block-extension-codeShowNum\" lang=\"ini\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\"><span class=\"hljs-attr\">headers_to_split_on<\/span> = [<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\">    (<span class=\"hljs-string\">\"#\"<\/span>, <span class=\"hljs-string\">\"Header 1\"<\/span>),<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\">    (<span class=\"hljs-string\">\"##\"<\/span>, <span class=\"hljs-string\">\"Header 2\"<\/span>),<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">    (<span class=\"hljs-string\">\"###\"<\/span>, <span class=\"hljs-string\">\"Header 3\"<\/span>),<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\">]<\/span>\n<\/code><\/pre>\n<h3 data-id=\"heading-23\">\u6b65\u9aa43\uff1a\u521d\u59cb\u5316Markdown\u6807\u9898\u6587\u672c\u5207\u5206\u5668\uff0c\u5206\u5272Markdown\u6587\u6863<\/h3>\n<pre><\/div><div class=\"code-block-extension-headerRight\"><span class=\"code-block-extension-lang\">css<\/span><div class=\"code-block-extension-copyCodeBtn\">\u590d\u5236\u4ee3\u7801<\/div><\/div><\/div><code class=\"hljs language-css code-block-extension-codeShowNum\" lang=\"css\"><span class=\"code-block-extension-codeLine\" data-line-num=\"1\">markdown_splitter = MarkdownHeaderTextSplitter(<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"2\">    headers_to_split_on=headers_to_split_on<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"3\">)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"4\">md_header_splits = markdown_splitter<span class=\"hljs-selector-class\">.split_text<\/span>(markdown_document)<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"5\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"6\">md_header_splits<span class=\"hljs-selector-attr\">[0]<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"7\"># Document(page_content='Hi this is Jim  nHi this is Joe', metadata={'<span class=\"hljs-selector-tag\">Header<\/span> <span class=\"hljs-number\">1<\/span>': <span class=\"hljs-string\">'Title'<\/span>, <span class=\"hljs-string\">'Header 2'<\/span>: <span class=\"hljs-string\">'Chapter 1'<\/span>})<\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"8\"><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"9\">md_header_splits<span class=\"hljs-selector-attr\">[1]<\/span><\/span>\n<span class=\"code-block-extension-codeLine\" data-line-num=\"10\"># Document(page_content='Hi this is Lance', metadata={'<span class=\"hljs-selector-tag\">Header<\/span> <span class=\"hljs-number\">1<\/span>': <span class=\"hljs-string\">'Title'<\/span>, <span class=\"hljs-string\">'Header 2'<\/span>: <span class=\"hljs-string\">'Chapter 1'<\/span>, <span class=\"hljs-string\">'Header 3'<\/span>: <span class=\"hljs-string\">'Section'<\/span>})<\/span>\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u6bcf\u4e2a\u5757\u90fd\u5305\u542b\u4e86\u9875\u9762\u5185\u5bb9\u548c\u5143\u6570\u636e\uff0c\u5143\u6570\u636e\u4e2d\u8bb0\u5f55\u4e86\u8be5\u5757\u6240\u5c5e\u7684\u6807\u9898\u548c\u5b50\u6807\u9898\u3002<\/p>\n<p>\u6211\u4eec\u5df2\u7ecf\u4e86\u89e3\u4e86\u5982\u4f55\u5c06\u957f\u6587\u6863\u5206\u5272\u4e3a\u8bed\u4e49\u76f8\u5173\u7684\u5757\uff0c\u5e76\u4e14\u5305\u542b\u6b63\u786e\u7684\u5143\u6570\u636e\u3002\u4e0b\u4e00\u6b65\u5219\u662f\u5c06\u8fd9\u4e9b\u5206\u5757\u540e\u7684\u6570\u636e\u79fb\u52a8\u5230\u5411\u91cf\u5b58\u50a8\u4e2d\uff0c\u4ee5\u4fbf\u8fdb\u884c\u68c0\u7d22\u6216\u751f\u6210\uff0c\u656c\u8bf7\u671f\u5f85\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>LLM\u53ea\u4e86\u89e3\u8bad\u7ec3\u8fc7\u7684\u5185\u5bb9\uff0c\u800c\u4e0d\u4e86\u89e3\u4f60\u7684\u4e2a\u4eba\u6570\u636e\u3002 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