collaborators

8 papers

cs.CL2026

Reinforcement Learning Elicits Contextual Learning of Unseen Language Translation

Hanxu Hu, Zdeněk Šnajdr, Pinzhen Chen +2

Prior work has shown that large language models (LLMs) can translate unseen or low-resource languages by undergoing continued training or even by encoding a grammar book in their c…

cs.LG2026

CodeScaler: Scaling Code LLM Training and Test-Time Inference via Reward Models

Xiao Zhu, Xinyu Zhou, Boyu Zhu +5

Reinforcement Learning from Verifiable Rewards (RLVR) has driven recent progress in code large language models by leveraging execution-based feedback from unit tests, but its scala…

cs.AI2026

CHARM: Calibrating Reward Models With Chatbot Arena Scores

Xiao Zhu, Chenmien Tan, Pinzhen Chen +4

Reward models (RMs) play a crucial role in Reinforcement Learning from Human Feedback by serving as proxies for human preferences in aligning large language models. However, they s…

cs.CL2026

DeReason: A Difficulty-Aware Curriculum Improves Decoupled SFT-then-RL Training for General Reasoning

Hanxu Hu, Yuxuan Wang, Maggie Huan +4

Reinforcement learning with Verifiable Rewards (RLVR) has emerged as a powerful paradigm for eliciting reasoning capabilities in large language models, particularly in mathematics…

cs.CL2025

QueST: Incentivizing LLMs to Generate Difficult Problems

Hanxu Hu, Xingxing Zhang, Jannis Vamvas +2

Large Language Models have achieved strong performance on reasoning tasks, solving competition-level coding and math problems. However, their scalability is limited by human-labele…

cs.CL2025

BenchMAX: A Comprehensive Multilingual Evaluation Suite for Large Language Models

Xu Huang, Wenhao Zhu, Hanxu Hu +4

Previous multilingual benchmarks focus primarily on simple understanding tasks, but for large language models(LLMs), we emphasize proficiency in instruction following, reasoning, l…