Hi, Is there any implementation mechanism in Llama-index to create a BM25 retriever from an already existing ChromadbVectoreStore object for advanced RAG retrieval?? Or how to get a docstore object from an existing ChromadbVectoreStore or how to retrieve all nodes from an already existing ChromadbVectoreStore ?
Thanks @Rohan. One more question, I have relatively a large crhomadb (163GB) file. I've tried to create a new BM25 retriever from that chromadb text based on your help but it takes too long to create the new retriever, is it normal due to the size of the chromadb file?
I'm not exactly sure if the corpus is persisted or the nodes are tokenized on every update. If only the new nodes are processed on update, then it'll not take as long as the first run