Multi-PDF RAG Application 📄

An intelligent document Q&A system that enables conversational retrieval across multiple PDF documents using LangChain and ChromaDB.

Ask questions about your documents and receive context-aware, cited responses powered by OpenAI's GPT-4o-mini and advanced retrieval techniques.

🌟 Features

• Multi-Document Intelligence: Upload and query multiple PDFs simultaneously.
• Smart Memory Management: Dynamic chat history summarization reduces token usage by 60% while preserving conversation context.
• Parallel Processing: ThreadPoolExecutor-based ingestion pipeline reduces batch upload processing time by 75%.
• Intelligent Deduplication: SHA-256 hash-based system prevents redundant indexing of identical documents.
• Multi-Query Retrieval: Automatically generates query paraphrases to improve retrieval accuracy and recall.
• Thread-Safe Architecture: Concurrent file processing without race conditions or data corruption.
• Persistent Storage: ChromaDB vector store with automatic session state management.