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This PR builds upon #62.
It refactors the sparse search to represent queries and documents as CSR matrices. The SPARTA model is updated to fit this setup.
It also adds a clean SPLADE model along with an eval code. The SPLADE authors used a
DenseRetrievalExactSearch
in their demo script, but as SPLADE is labeled as a sparse model it should use aSparseSearch
in my opinion. The results are not directly comparable as it uses the co-condenser instead of distilbert as base model. I could not find a URL to download the link of the original model.Maxime.