Author

Zhu-Min Chen

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Preprint Sep 2026

Tracing Query Expansion Effects through Sparse Autoencoder Features

Query expansion (QE) is a critical technique in information retrieval that enriches underspecified queries with additional textual context. However, its effect is often unreliable in modern dense retrieval, especially for strong off-the-shelf retrievers without retraining. Existing studies mainly examine expansion qual...

Fang Dong, Wei-Ran Shi, Zhi-Wei Xu et al. · 0 citations

Jul 2026

UESF-Bench: Benchmarking and Probing for Unified Embodied Seeking and Following

The Unified Embodied Seeking and Following Benchmark (UESF-Bench) is introduced, a large-scale and diverse benchmark for embodied human seeking and following that requires agents to handle semantic-guided exploration, reliable behavior switching and recovery, and delayed identity grounding.

Kun Yu, Jianhua Yang, Yixiang Chen et al. · arXiv.org · 0 citations