https://jizuiba.netlify.app/tags/chunk/Recent content in Chunk on Jizuiba`s BlogHugozh-cnFri, 27 Mar 2026 00:00:00 +0000https://jizuiba.netlify.app/posts/rag-%E7%9B%B8%E5%85%B3%E7%9A%84%E7%9F%A5%E8%AF%86%E5%90%8D%E8%AF%8D/Fri, 27 Mar 2026 00:00:00 +0000https://jizuiba.netlify.app/posts/rag-%E7%9B%B8%E5%85%B3%E7%9A%84%E7%9F%A5%E8%AF%86%E5%90%8D%E8%AF%8D/<h2 id="chunk分块">Chunk（分块）</h2> <p><strong>是什么</strong>：</p> <p>把长文档切一小段一小段，再做向量化存储。</p> <p><strong>为什么需要它</strong></p> <ul> <li>LLM 的上下文限制</li> <li>检索时需要“精准命中片段”而不是一整片文章</li> </ul> <p><strong>例如</strong>：</p> <p>一篇10000字的文章 -&gt; 切成：</p>