Hybrid Search using cosine similarity

Support
1

Hi,

I have implemented a similarity search RAG application using Pinecone’s hybrid search.

I want to implement a hybrid search with cosine similarity but I’m unsure if it can be done without customizations.

Previously, I implemented the same architecture with Langchain, which supported semantic search with Pinecone using cosine similarity in combination with the BM25 algorithm. However, I stopped using Langchain and now rely solely on Pinecone for semantic search.

Is it possible to achieve hybrid search with Pinecone using cosine similarity?

2

@thomas2 ,

With Pinecone, sparse-dense vectors can only be queried using the dot product metric. This is stated in Limitations.

Best,

Evan