📝 Publications

RewardHarness: Self-Evolving Agentic Post-Training
Yuxuan Zhang*, Penghui Du*, Bo Li*, Cong Wei*, Junwen Miao, Huaisong Zhang, Songcheng Cai, Yubo Wang, Dongfu Jiang, Yuyu Zhang, Ping Nie, Wenhu Chen, Changqian Yu, Kelsey R. Allen
- RewardHarness introduces a self-evolving pipeline that turns execution feedback and automatic verifiers into scalable reward signals for agentic post-training, cutting the reliance on expensive human preferences.

Songcheng Cai*, Zhiheng Lyu*, Yuansheng Ni, Xiangchao Chen, Baichuan Zhou, Shenzhe Zhu, Yi Lu, Haozhe Wang, Chi Ruan, Benjamin Schneider, Weixu Zhang, Xiang Li, Andy Zheng, Yuyu Zhang, Ping Nie, Wenhu Chen
- SWE-QA-Pro introduces a repository-level QA benchmark and agentic training framework for code understanding, enabling LLM to navigate, reason over, and verify real-world software repositories.

VisCoder2: Building Multi-Language Visualization Coding Agents
🌐 Project | 🤗 HF Collection | 💻 Code
Yuansheng Ni*, Songcheng Cai*, Xiangchao Chen*, Jiarong Liang, Zhiheng Lyu, Jiaqi Deng, Kai Zou, Ping Nie, Fei Yuan, Xiang Yue, Wenhu Chen
- VisCoder2 introduces a multi-language visualization coding benchmark, dataset, and model family, enabling language models to generate, execute, render, and iteratively debug visualization code across diverse programming languages.

Revisiting Automated Evaluation for Long-form Table Question Answering
Yuqi Wang, Lyuhao Chen, Songcheng Cai, Zhijian Xu, Yilun Zhao
- LfTQA-Eval is a meta-evaluation dataset containing 2,988 human-annotated examples, designed to evaluate the performance of current automated metrics in assessing LLM-based LFTQA systems, with an emphasis on faithfulness and comprehensiveness.
📄 Preprints
- arXiv 2026 ClawBench: Can AI Agents Complete Everyday Online Tasks?
Yuxuan Zhang, Yubo Wang, Yipeng Zhu, Penghui Du, Junwen Miao, Xuan Lu, Wendong Xu, Yunzhuo Hao, Songcheng Cai, Xiaochen Wang, Huaisong Zhang, Xian Wu, Yi Lu, Minyi Lei, Kai Zou, Huifeng Yin, Ping Nie, Liang Chen, Dongfu Jiang, Wenhu Chen, Kelsey R. Allen.