SHIFT trains LLM retrievers to reason through latent continuous tokens and reconstruct explicit reasoning traces, improving reasoning-intensive retrieval.
E xpand R : Teaching Dense Retrievers Beyond Queries with LLM Guidance
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SHIFT: Self-reconstruction Harnesses Implicit Fine-grained Thinking for Retrieval
SHIFT trains LLM retrievers to reason through latent continuous tokens and reconstruct explicit reasoning traces, improving reasoning-intensive retrieval.