Oleh Storozhev

Zero-Overhead Adaptive Fusion in Information Retrieval via Pre-Retrieval Lexical Routing

2026 · Zenodo (CERN European Organization for Nuclear Research)

Hybrid retrieval systems typically combine sparse (lexical) and dense (semantic) scores using a static interpolation weight, which fails to adapt to diverse query types. We propose a zero-overhead, pre-retrieval routing mechanism that predicts the optimal …