collaborators

5 papers

cs.CL2026

Low Perplexity is Repetition: A One-Dimensional Self-Conditioning Attractor in Continuous Diffusion LMs

Shuai Zhang, Zijie Chen, Hongliang He +2

Continuous diffusion language models such as ELF report record-low generative perplexity (Gen-PPL). We find a catch: these models repeat far more than human text, and Gen-PPL rewar…

cs.CL2026

Improving Data and Reward Design for Scientific Reasoning in Large Language Models

Zijie Chen, Zhenghao Lin, Xiao Liu +3

Solving open-ended science questions remains challenging for large language models, particularly due to inherently unreliable supervision and evaluation. The bottleneck lies in the…

cs.CL2026

A2Eval: Agentic and Automated Evaluation for Embodied Brain

Shuai Zhang, Jiayu Hu, Zijie Chen +9

Current embodied VLM evaluation relies on static, expert-defined, manually annotated benchmarks that exhibit severe redundancy and coverage imbalance. This labor intensive paradigm…

cs.AI2025

Breaking the Data Barrier -- Building GUI Agents Through Task Generalization

Junlei Zhang, Zichen Ding, Chang Ma +4

Graphical User Interface (GUI) agents offer cross-platform solutions for automating complex digital tasks, with significant potential to transform productivity workflows. However,…

cs.NE2025

QUBE: Enhancing Automatic Heuristic Design via Quality-Uncertainty Balanced Evolution

Zijie Chen, Zhanchao Zhou, Yu Lu +3

Solving NP-hard problems traditionally relies on heuristics, yet manually designing effective heuristics for complex problems remains a significant challenge. While recent advancem…