Author

Zijia Zhao

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Jul 2026

PerceptionBench: Evaluating Atomic Visual Perception in Multimodal Large Language Models

PerceptionBench provides a capability-level standard for measuring and diagnosing the visual perception boundaries of MLLMs, by diagnosing the earliest failure points in the responses of frontier MLLMs across 42 existing benchmarks and constructing an error taxonomy whose perception branch defines ten atomic perceptual capabilities.

Zichao Lin, Yifeng Xie, Bowen Qu et al. · arXiv.org · 2 citations

Jul 2026

TimeThink: Reasoning with Time for Video LLMs

TimeThink is proposed, a reinforcement learning framework that explicitly guides temporal evidence discovery in Video-LLMs and introduces a step-wise temporal process reward that provides localized credit assignment for these clues and a joint process--outcome optimization objective that balances reasoning fidelity with task correctness.

Handong Li, Longteng Guo, Zikang Liu et al. · arXiv.org · 0 citations