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Chuan Xiao

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#machine learning Preprint Oct 2026

MotiveMob: Motivation as Semantic Action for Closed-Loop Human Mobility Generation

Human mobility generation, an important task in urban research, synthesizes trajectory data for urban planning and transportation management. Human mobility can be characterized as a"why-where-when"decision process: people form an intention to move and then determine where and when the corresponding activity will take...

Meng-Kun Gao, Zeng-Qing Wu, Ren-He Jiang et al. · 0 citations
#machine learning Preprint Sep 2026

OPTS-TTPO: Enhancing Finite-Sample Policy-Gradient Learning with Tree Search

The Branch Aggregation Lemma shows that branch-weighted tree statistics recover chain expectations when branch choices and weights are fixed before outgoing transitions are sampled, and bound the gradient bias from adaptive expansion and show that max backup assigns prefix credit to actions leading to better discovered...

Jun-Yu Lu, Shi-Chao Weng, Zhi-Qiang Wang et al. · 0 citations

ShapleyLaw: A Game-Theoretic Approach to Multilingual Scaling Laws

This paper considers multilingual pretraining as a cooperative game in which each language acts as a player that jointly contributes to pretraining, gaining the resulting reduction in test loss as the payoff and proposes a game-theoretic multilingual scaling law called ShapleyLaw.

Xuyang Cao, Qian-Ying Liu, Chuan Xiao et al. · 2 citations
Preprint Aug 2026

Proxy reliance in large language model decisions is uncalibrated to predictive evidence

Large language models are entering decisions in triage and lending, where task-relevant inference must be distinguished from impermissible proxy use, and causal proxy effects in four LLMs on a clinical-ranking task with known ground truth are measured.

Zeng-Qing Wu, Chuan Xiao · 0 citations
#small language model Preprint Aug 2026

Predicting the scale limits of social mechanisms in agent societies

An audit is introduced that predicts a mechanism's fate as a population grows, asking how often the mechanism can act, whether agents use the information it supplies, and whether the measurement itself creates apparent scale effects.

Zeng-Qing Wu, Chuan Xiao · 0 citations

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