Author

Jia-Hao Zhang

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Preprint Sep 2026

Concentrate After Imagination: Text-Conditioned Evidence Grounding for Partially Relevant Video Retrieval

Partially Relevant Video Retrieval (PRVR) retrieves untrimmed videos when queries describe only short moments. Although recent methods improve local representations, uncertainty modeling, and global context, final ranking often still trusts the strongest local response; a coincidentally similar fragment can therefore p...

Shuai-Qi Cheng, Si-Yu You, Yan-Bin Wu et al. · 0 citations

#machine learning Preprint Aug 2026

Do VLMs Share Safety Neurons Across Modalities?

A causal, neuron-level analysis of safety mechanisms in 10 VLMs, a two-stage detection pipeline with iterative ablation that accounts for self-repair, and two modality-isolated benchmarks, ViSafe-Detect and ViSafe-Eval, which decouple visual and textual safety signals are introduced.

Jia-Xuan Li, Jia-Hao Zhang, D. Vo et al. · 0 citations