bRAG langchain

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Basic Information

This repository is a hands-on, developer-focused collection of notebooks and resources for learning and building Retrieval-Augmented Generation (RAG) systems using LangChain. It serves as a guided exploration from introductory concepts to advanced RAG implementations, providing a boilerplate starter for a fully customizable RAG chatbot. The materials cover environment setup, embedding generation, vector stores, retrieval pipelines, multi-query strategies, routing and query construction, indexing strategies, reranking, and experiments with different retrieval models. The README highlights key notebooks to run in sequence, required environment variables, and recommended Python version. The primary intent is to help practitioners prototype, experiment with, and understand RAG architectures and components rather than to provide a hosted service. The project also references related tools and research techniques used in modern RAG stacks and announces an associated BragAI public beta.

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Features
A curated set of Jupyter notebooks that progressively teach RAG concepts including a starter file full_basic_rag.ipynb and five focused notebooks covering setup, multi-query, routing and query construction, indexing and advanced retrieval, and retrieval plus reranking. Demonstrated integrations with LangChain and common vector stores such as ChromaDB and Pinecone are included. The repo shows embedding options including OpenAI and Cohere, multi-vector indexing, InMemoryByteStore for summaries, ColBERT token-level retrieval, RAPTOR discussion, and approaches like RAG-Fusion, Reciprocal Rank Fusion, CRAG, and Self-RAG. Practical setup guidance is provided: Python 3.11.11 recommendation, virtual environment steps, requirements.txt installation, and a .env.example with keys for OPENAI, LANGCHAIN, PINECONE, and COHERE. The materials include architecture diagrams and references for deeper study.
Use Cases
The project provides a reproducible, step-by-step learning path for developers and researchers who want to implement or experiment with RAG systems. By following the notebooks in order developers can set up the environment, prepare documents, generate embeddings, configure vector stores, and build retrieval-to-generation pipelines quickly. It demonstrates methods to improve retrieval relevance such as multi-query generation, semantic and logical routing, structured search prompts, multi-representation indexes, and reranking strategies with practical examples. The included .env template and dependency guidance reduce setup friction, while examples like ColBERT and multi-vector retrievers expose advanced retrieval options for long-context problems. Contact and contribution guidance and a BragAI announcement provide avenues for collaboration and further tooling.

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