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Guo-Dong Zhou

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Preprint Oct 2026

Aligning LLMs with Sparse Retrieval via Adaptive Sparse Supervision

While large language models (LLMs) offer strong semantic representations, their application to first-stage retrieval incurs substantial latency and storage costs. Neural sparse retrievers such as SPLADE provide efficient retrieval but rely on relatively compact encoders with limited representational capacity. To bridge...

Tong-Na Chen, Ming-Han Li, Guo-Dong Zhou · 0 citations

#small language model Preprint Oct 2026

XViewRank: Overlap-Conditioned Score Fusion for LLM-Augmented Sparse Retrieval

XViewRank is presented, a lightweight retrieval-side method for conditionally fusing BM25 results from an original query, a hypothesis view, and a step-back view, and the results support overlap-conditioned score fusion as a compact retrieval-side alternative to fixed fusion, while also delimiting where its advantage i...

Xin-Xuan Lv, Ming-Han Li, Guo-Dong Zhou · 0 citations