A zero-shot mixture of sparse, dense, and simulated human retrievers, weighted by pre- and post-retrieval geometry signals, beats individual small retrievers and 7B LLM retrievers on four scientific retrieval benchmarks.
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MoR: Better Handling Diverse Queries with a Mixture of Sparse, Dense, and Human Retrievers
A zero-shot mixture of sparse, dense, and simulated human retrievers, weighted by pre- and post-retrieval geometry signals, beats individual small retrievers and 7B LLM retrievers on four scientific retrieval benchmarks.