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Xin-Tao Wang

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On the Behavioral Traits of LLM Agents

This work proposes A-B-D to infer traits bottom-up from behavioral data (B-data), namely how agents act on their environment and communicate with users, as recorded in existing trajectories, and offers a new lens for understanding AI personality.

Hao-Kai Zhao, Jie Gao, Yunze Xiao et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Beyond Skill Evolution: Self-Evolving Context Management Policies for Long-Horizon Agent Harnesses

ContextEvo, a framework that learns a context policy from long-horizon trajectories and reconstructs the model-visible context at key decision points, identifies context-related failures, and applies targeted policy updates, is introduced.

Wei-Yuan Li, Jing-Heng Xu, Ai-Li Chen et al. · 0 citations
#artificial intelligence Preprint Sep 2026

EvoRS: On-Policy Self-Evolution of Reward Systems for Open-Ended Reinforcement Learning

EvoRS is introduced, a self-evolving RL framework that evolves the reward system from on-policy experience, representing it as an executable Reward-DAG, and is updated from on-policy rollouts and reward traces to maintain train-time reliability.

Wei-Yuan Li, Ai-Li Chen, Xin-Tao Wang et al. · 1 citation
#natural language process... Preprint Sep 2026

SocialRL: Refining LLMs'Social Intelligence through Multi-turn Reinforcement Learning and Reward Design

This work proposes SocialRL, a multi-turn reinforcement learning framework using PPO that propagates delayed outcome rewards back to each turn, enabling long-horizon planning and demonstrates the effectiveness of SocialRL across synthetic and real social scenes, as well as standard and challenging social scenarios.

Jia-Ning Wang, Xin-Tao Wang, Ai-Li Chen et al. · 1 citation

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