Knowledge Graph RAG with Neo4j and LangChain

Developed hybrid retrieval system combining vector similarity and graph traversal over Neo4j knowledge graph with Cypher query generation, fulltext search, and OpenAI embeddings. Progressed from simple Einstein graph to healthcare domain graph from CSV to production Roman Empire RAG with chat history and context-aware generation. Stack: Neo4j, LangChain, LangChain-Neo4j, OpenAI, tiktoken, Wikipedia.

GitHub link: https://www.twine.net/signin