Papers by Powei Chang
ChemAmp: Amplified Chemistry Tools via Composable Agents (2026.findings-acl)
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Zhucong Li, Powei Chang, Jin Xiao, Zhijian Zhou, Qianyu He, Jiaqing Liang, Fenglei Cao, Xu Yinghui, Yuan Qi
| Challenge: | LLM-based agents are powerful tools for automating complex scientific workflows, especially in chemistry, but their single-task performance is limited by tool constraints. |
| Approach: | They propose a framework that optimizes the collective capabilities of specialized tools by dynamic coordination within individual tasks. |
| Outcome: | The proposed framework outperforms chemistry-specialized models, generalist LLMs, and agent systems with tool orchestration. |
Instructions are all you need: Self-supervised Reinforcement Learning for Instruction Following (2026.acl-long)
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| Challenge: | Existing reinforcement learning approaches suffer from dependency on external supervision and sparse reward signals from multi-constraint tasks. |
| Approach: | They propose a self-supervised reinforcement learning framework that eliminates dependency on external supervision by deriving reward signals directly from instructions and generating pseudo-labels for reward model training. |
| Outcome: | The proposed framework achieves strong improvements across 3 in-domain and 5 out-of-domain datasets while maintaining computational efficiency. |
What Makes an Ideal Quote? Recommending “Unexpected yet Rational” Quotations via Novelty (2026.acl-long)
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| Challenge: | Prior systems focus on topical relevance and overlook what makes quotes memorable. |
| Approach: | They propose a system that maps quotations and contexts into deep-meaning labels for label-enhanced retrieval. |
| Outcome: | The proposed system can recommend quotations that are contextually novel while semantically coherent. |