https://github.com/langchain-ai/langchain/blob/master/cookbook/advanced_rag_eval.ipynb
https://github.com/langchain-ai/langchain/blob/master/cookbook/Semi_Structured_RAG.ipynb
https://github.com/ggerganov/llama.cpp
https://huggingface.co/mys/ggml_llava-v1.5-7b/tree/main
https://blog.langchain.dev/semi-structured-multi-modal-rag/
https://python.langchain.com/docs/modules/data_connection/retrievers/ensemble