Author

Xuri Ge

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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

Review Sep 2026

A Comprehensive Review of Multimodal Facial State Analysis: Tasks, Methods, and Resources

This survey reviews core tasks, representative methods, and datasets in multimodal facial state analysis, focusing on facial expression recognition, AU detection, and face-based soft biometric estimation, and emphasizing the unique value of language in providing contextual semantics, enhancing reasoning, and generating...

Xuri Ge, Tian-Shuo Zhang, Ruihan Li et al. · 0 citations