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Author

Sharon Li

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Preprint Jul 2026

TRACE: Turn-level Reward Assignment via Credit Estimation for Long-Horizon Agents

On long-horizon complex search, TRACE substantially improves base-model tool-use ability using pure RL, without a cold-start supervised fine-tuning stage, an agentic mid-training stage, or training on live-web data.

Leitian Tao, Baolin Peng, Wenlin Yao et al. · 4 citations
Jul 2026

Do Unified Multimodal Models Think in One Space? A Lens Through Cross-Branch Steering

It is shown that steering vectors learned from the understanding branch can transfer to generation, enabling controllable image synthesis and improved semantic faithfulness, and establish cross-branch steering as a practical tool for probing multimodal representations.

Yu Wang, Sharon Li · 0 citations
Jul 2026

Multi-Agent LLMs Fail to Explore Each Other

This work introduces Multi- Agent Contextual Exploration (MACE), a lightweight framework that explicitly promotes exploration through structured peer selection that substantially improves exploration behavior and downstream task performance and shows theoretically that the value of exploration increases with agent diversity.

Hyeong Kyu Choi, Jiatong Li, Wendi Li et al. · 1 citation

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