PDF Chat App

This is a PDF chatbot application powered by LangChain's LLM (Large Language Model). The application allows users to upload a PDF file and engage in a conversation with the chatbot based on the content of the PDF.

About

The PDF Chat App is designed to assist users in extracting information from PDF documents through a chat interface. It leverages advanced AI technologies to analyze and respond to user queries based on the content of the uploaded PDF.

Technologies Used

• Streamlit: Provides the user interface for uploading PDF files and interacting with the chatbot.
• LangChain: Employs text splitting techniques to break down large documents into manageable chunks.
• OpenAI: Utilizes the GPT-3.5 model for natural language processing and generating responses.

Features

• PDF Upload: Users can upload PDF files directly to the application.
• Text Extraction: The application extracts text from uploaded PDFs for analysis.
• Chat Interface: Users can converse with the AI chatbot to query information from the PDF content.
• Semantic Search: Utilizes embeddings to find relevant sections of the document based on user queries.
• Response Generation: Generates responses using the GPT-3.5 model tailored to the context of the provided text.

Usage

1. Upload PDF: Click on the "Upload your PDF" button to upload a PDF file.
2. Chat Interface: Type messages in the chat input box and press Enter to send them to the chatbot.
3. AI Response: The chatbot will respond based on the content of the PDF and the user's queries.
4. History: Chat history is displayed to provide context for the conversation.

Installation

Ensure you have Python installed, then run the following commands to install the required dependencies:

pip install streamlit numpy PyPDF2 langchain_text_splitters openai python-dotenv

Configuration

Before running the application, make sure to set up your OpenAI API key by creating a .streamlit folder and secrets.toml file and adding your key:

OPENAI_API_KEY=your_api_key_here

Running the App

To launch the PDF Chat App, execute the following command in your terminal:

streamlit run your_script_name.py

Replace your_script_name.py with the filename of the script containing the provided code.

Contributors

Embeddings: Rainer Stropek

Acknowledgments

Special thanks to the creators and maintainers of Streamlit, LangChain, and OpenAI for their incredible tools and resources.