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arXiv · 2606.20736

REKEY: Metadata-Grounded Visual-Key Regeneration for Contamination-Resilient VQA Evaluation

Tengjie Lin·Yutao Sun·Jingwei Ni·Shuhan Ge·Hao-Xuan Ma·Yanting Miao·Wangyue Lu·Mingshuai Chen·Tiancheng Zhao·Jianwei Yin
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Abstract

Static visual question answering (VQA) benchmarks age quickly: Once the items leak into training corpora, scores can reflect memorization rather than genuine visual ability, thus obscuring real progress. Rebuilding high-quality benchmarks such as V*Bench requires substantial human annotation, yet each static release can quickly become another leaked artifact. We propose ReKey, a live benchmark protocol that randomly regenerates the answer-bearing local detail, or visual key, in real images at evaluation time. Using human-validated edit slots, ReKey samples fresh instances with new answers, construction-grounded labels, and controlled visual-search difficulty. On V*Bench, the ReKey regenerated benchmark reveals a sharp score jump across eight frontier vision-language models (VLMs): The original items score 9.5--18.8 percentage points higher than the regenerated variants. By making the visual key renewable, ReKey keeps evaluation fresh as models and training data evolve.

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Tengjie Lin, Yutao Sun, Jingwei Ni, Shuhan Ge, Hao-Xuan Ma, Yanting Miao, Wangyue Lu, Mingshuai Chen, Tiancheng Zhao, Jianwei Yin. 2026-06-17. REKEY: Metadata-Grounded Visual-Key Regeneration for Contamination-Resilient VQA Evaluation. https://arxiv.org/abs/2606.20736

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