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    <title>Vector-Db on CATNAP</title>
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      <title>Embedding 是什麼｜語意搜尋與向量資料庫的基礎</title>
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      <pubDate>Fri, 08 May 2026 00:00:00 +0000</pubDate>
      
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      <description>Embedding 把文字轉成數字向量，讓「意思相近的文字距離也近」。是語意搜尋、RAG、推薦系統的底層技術。</description>
      
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      <title>Vector Database 是什麼｜Pinecone、Chroma、pgvector 怎麼選</title>
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      <pubDate>Fri, 08 May 2026 00:00:00 +0000</pubDate>
      
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      <description>向量資料庫儲存 Embedding 向量，讓你用語意而非關鍵字搜尋。是 RAG 和語意搜尋的基礎設施，Pinecone 最易用，pgvector 零成本整合 Postgres。</description>
      
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      <title>RAG vs Fine-tuning｜企業 AI 應用該選誰？</title>
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      <pubDate>Tue, 05 May 2026 00:00:00 +0000</pubDate>
      
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      <description>企業導入 AI 的兩大流派。RAG 像是「開卷考」，Fine-tuning 像是「補習」，教你根據知識更新頻率與輸出風格選擇最佳解。</description>
      
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