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Zonghuan Xu

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#artificial intelligence Preprint Oct 2025

DropVLA: An Action-Level Backdoor Attack on Vision-Language-Action Models

DropVLA is presented, an action-level backdoor attack that forces a reusable action primitive to execute at attacker-chosen decision points under a realistic pipeline-black-box setting with limited data-poisoning access, using a window-consistent relabeling scheme for chunked fine-tuning.

Zong-Huan Xu, Jiayu Li, Yun-Han Zhao et al. · 5 citations
Preprint Apr 2026

When Direct Prediction Fails: Evidence from LLM-Based Misinformation Risk Evaluation

The results suggest that directly asking for the target response may not always yield the most effective score for predicting it, and that comparing direct scores with indirect paths through related judgments may reveal a more effective predictive route.

Zonghuan Xu, Xiang Zheng, Yu-Tao Wu et al. · 0 citations

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