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LangFlow Tutorial

2023-11-28
LangChain及LangFlow使用指南
https://www.eula.club/blogs/LangChain及LangFlow使用指南.html#_1-langchain框架的介绍与使用

2023-12-12
文件中的範例請參考: Flowchart (updated@ 2023-12-12)
測試用csv檔案請參考: error_code.csv or error_code_English.csv

Flowchart說明

![image]

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  1. LocalFileLoader

    1. 從本地端挑選檔案並且上傳(支援csv、json、txt、pdf、pptx、docx)

  2. AzureOpenAIEmbeddings[*註1]

    1. 用以串接Azure API，調用Azure提供的語言模型
    2. 此場景用途：提供文件理解與抽取資訊的功能，例如: pdf, txt, 資料庫等

  3. AzureChatOpenAI[*註2]

    1. 用以串接Azure API，調用Azure提供的語言模型
    2. 此場景用途：提供聊天導向的語意理解與問答

  4. CombineDocsChain

    1. 整合載入的文件以實現後續的問答功能
    2. 詳細請參考: CombineDocsChain​

  5. PGVector[*註3]

    1. 提供串接pgvector功能
    2. 可指定連接欄位以及目標Table

  6. RetrievalQA

    1. 讀取已整合的文件資料，並從中檢索資訊以實現文本問答

  7. Tool

    1. 將Chain、Agent或者Function封裝成tool
    2. 方便提供Agent更多的可用工具

  8. AgentInitializer[*註4]

    1. 這是一種從語言模型 (LLM) 和工具建立零樣本代理(zero-shot agent)的快速方法

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AzureOpenAIEmbeddings填寫範例[*註1]

Image Not Showing Possible Reasons
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  • The note which the image was originally uploaded to has been deleted
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Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
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AzureChatOpenAI填寫範例[*註2]

Image Not Showing Possible Reasons
  • The image was uploaded to a note which you don't have access to
  • The note which the image was originally uploaded to has been deleted
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Image Not Showing Possible Reasons
  • The image file may be corrupted
  • The server hosting the image is unavailable
  • The image path is incorrect
  • The image format is not supported
Learn More →
PGVector填寫範例[*註3]

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Image Not Showing Possible Reasons
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  • The server hosting the image is unavailable
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What is an Agent? [*註4]

更多資訊請參考: Agents

代理(Agents)是一個會使用推理(reasoning)來做出決策和採取行動的元件，旨在以某種程度的「自主」（或代理）執行任務或提供服務。它們能提供 LLM 額外的強大功能，例如調用 API、Google搜尋，甚至串接資料庫等外部工具。

QA (Question Answering) :

  1. 請問1007是什麼錯誤?
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    Image Not Showing Possible Reasons
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    • The note which the image was originally uploaded to has been deleted
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