Bm25

Because of how bm25 works, you can just filter the list of returned nodes right?

I actually havent thought of that 😅 , I was thinking of filtering before the retrieve, how can I implement your method inside QueryFusionRetriever? Do I have to modify the class it self?

Hmmm, you could implement a custom retriever that wraps the bm25 retriever, to then filter 😅

Custom retrievers are not too bad to implement

Example

https://docs.llamaindex.ai/en/stable/examples/query_engine/CustomRetrievers.html#define-custom-retriever

I'll try that out, thanks a ton 🙇‍♂️