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Jian-Yu Jiang-Lin

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Preprint Sep 2026

Look Before You Judge: Training-Free Region Mining for Grounded and Explainable Deepfake Detection

Multimodal large language models (MLLMs) can explain deepfake verdicts in natural language, but such explanations are not necessarily visually grounded in the visual evidence underlying the prediction. A model may describe plausible artifacts inferred from language priors rather than from image evidence. Existing groun...

Chia-Ling Chen, Yu-Ting Ta, Jian-Yu Jiang-Lin et al. · 0 citations
Jul 2026

RetroHolmes: When Semantic Plausibility Fails Retrospective Physical Process Reasoning

Humans can infer hidden physical processes from sparse observations, yet current evaluation protocols for Vision Language Models fail to assess whether such physical reasoning is genuinely captured. To address this gap, we introduce Retrospective Physical Process Reasoning, a new evaluation paradigm to reason backward...

Ruoxuan Zhang, Qiyun Zheng, Siyu Wu et al. · 0 citations

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