Preventing duplicates and noise in embeddings

[drale2k]

I think, even if not yet in scope for lanchianrb, this should be discussed as people will inevitably come across this problem. Especially when embedding documents with langchainrb, what is a good strategy to prevent the same document / strings being re-added repeatedly?

For a whole document i think checksums could work (although for big docs computing a checksum will increase) - but what about individual pages of a document or text chunks? Would love some guidance and maybe later down the road langchain can help with this.

[mengqing]

It seems this is done through indexing

I wonder if there's a roadmap on porting this feature into langchainrb

[drale2k]

Thanks that's really useful. Would be great to have something like this in langchainrb. At least a basic version to start with as it is a real PITA to do this manually