Local Llama

This project enables you to chat with your PDFs, TXT files, or Docx files entirely offline, free from OpenAI dependencies. It's an evolution of the gpt_chatwithPDF project, now leveraging local LLMs for enhanced privacy and offline functionality.

Features

• Offline operation: Run in airplane mode
• Local LLM integration: Uses Ollama for improved performance
• Multiple file format support: PDF, TXT, DOCX, MD
• Persistent vector database: Reusable indexed documents
• Streamlit-based user interface

New Updates

• Ollama integration for significant performance improvements
• Uses nomic-embed-text and llama3:8b models (can be changed to your liking)
• Upgraded to Haystack 2.0
• Persistent Chroma vector database to enable re-use of previously updloaded docs

Installation

1. Install Ollama from https://ollama.ai/download
2. Clone this repository
3. Install dependencies:

   pip install -r requirements.txt
   

4. Pull required Ollama models:

   ollama pull nomic-embed-text
   ollama pull llama3:8b
   

Usage

1. Start the Ollama server:

   ollama serve
   

2. Run the Streamlit app:

   python -m streamlit run local_llama_v3.py
   

3. Upload your documents and start chatting!

How It Works

1. Document Indexing: Uploaded files are processed, split, and embedded using Ollama.
2. Vector Storage: Embeddings are stored in a local Chroma vector database.
3. Query Processing: User queries are embedded and relevant document chunks are retrieved.
4. Response Generation: Ollama generates responses based on the retrieved context and chat history.

License

This project is licensed under the Apache 2.0 License.

Acknowledgements

• Ollama team for their excellent local LLM solution
• Haystack for providing the RAG framework
• The-Bloke for the GGUF models