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Nan-Yun Peng

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#artificial intelligence Preprint Oct 2026

Tev: Scaling Long-Horizon Agentic Environments with Dense Progress Rewards

Long-horizon agents have drawn growing attention for their ability to work autonomously -- from hours to days -- on economically valuable tasks, a capability essential to automated discovery and recursive self-improvement (RSI). Yet open-source models still struggle on long-horizon tasks, largely for lack of both train...

Wen-Bo Hu, Shraman Pramanick, Krishna Kumar Singh et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Overwhelmed by Choice: Studying LLM Decision Making at Scale

It is shown that strong small-option performance does not necessarily imply robust large-scale candidate comparison and that hierarchical partitioning and permutation-based inference improve accuracy by roughly 20 percentage points at $N=160$ on both HotpotQA and MIMIC.

Yu-Chi Lin, Aryan Seth, A. Aravind et al. · 1 citation
#computer vision May 2026

On Asymmetric Optimization of Reasoning and Perception in Vision-Language Model Post-Training

A controlled diagnostic framework with two synthetic tasks that disentangle perception from reasoning reveals a consistent perception-reasoning asymmetry: post-training improves reasoning more substantially than perception, though the underlying mechanism differs across training paradigms.

Xueqing Wu, Yu-Chieh Lin, Kai-Wei Chang et al. · 0 citations

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