Author

Junwei Yang

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#artificial intelligence Preprint Oct 2026

PreAct-Nav: Agentic Reasoning Before Action for Urban Navigation

Urban navigation requires embodied agents to pursue long-horizon goals through local decisions based on egocentric observations. However, existing agentic navigation methods often struggle to translate distant goals into coherent local decisions in large-scale physical environments. Their reliance on linguistic reasoni...

Jing Xie, Shou-Wei Ruan, Yu-Bin Wang et al. · 0 citations

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...

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