Author

Jia-Li Wei

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Preprint Aug 2026

Not All Tokens Are Equal: Region-Aware Consistency Repair of Backdoors in MLLMs

MLLMs are increasingly deployed in user-facing applications, yet they inherit backdoor risks from the pipelines used to construct them: triggers may reside in images, texts, or both. Existing model-level backdoor removal methods, largely designed for conventional classifiers, show limited effectiveness on MLLMs, while...

Jia-Li Wei, Ming Fan, Ming-Kun Zhang et al. · 0 citations

#artificial intelligence Preprint Sep 2026

GraphAHA: Graph-Based Adaptive Search with Heterogeneous Actions for Test-Time Code Generation

Test-time scaling improves code generation by spending additional inference budget (e.g., calls or tokens) on direct sampling, feedback-conditioned repair, and reasoning-guided implementation. Search-based methods can allocate this budget adaptively, but two challenges remain. First, tree-structured search treats each...

Xi-Tao Li, Hai-Jun Wang, Ge-Ge Yuan et al. · 0 citations