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Zhixiong Zhang

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#artificial intelligence Preprint Oct 2026

GeoPID: Decomposing and Steering Visual Information in Vision-Language Models

While recent vision-language models (VLMs) have shown outstanding performance across diverse applications, they tend to under-use visual information and over-rely on textual context. In this work, we propose \textsc{GeoPID}, a training-free framework that analyzes multimodal information within VLMs from a geometric per...

Seulgi Kim, Zhixiong Zhang, Xin-Wei Zhang et al. · 0 citations
Review Sep 2026

WorldReward: Reward Modeling for Camera-Conditioned World Models

This work presents WorldReward, a VLM-based pairwise preference reward model that unifies action-consistency and visual-quality evaluation for camera-conditioned world models, and introduces WorldReward-Bench, a human-annotated benchmark measuring reward-model agreement with human preferences across action consistency,...

Yi-Bin Wang, Ze-Han Wang, Junshu Tang et al. · 0 citations
Preprint Jul 2026

Rethinking Self-Evolving Agent Skills: Feedback Dynamics over Multiple Rounds

Overall, persistent skill self-evolution is better understood as sparse, validation-filtered search with model- and benchmark-dependent returns, rather than steady improvement from additional rounds.

Yuxuan Liu, Zhaochen Su, Yuhao Zhang et al. · 2 citations

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