Author

S. Sundararaman

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Preprint Aug 2026

CeQe: Grounding Lexical Retrieval in Semantic Evidence

This work presents Cross-Encoder Query Expansion (CE-QE), which reads the per-token relevance attributions of a cross-encoder applied to top semantic search results, selects the terms the cross-encoder treats as decisive, and appends them to the BM25 query.

Adam Kahirov, Umesh Deshpande, S. Sundararaman · 0 citations