Xiaokun Zhang

2 papers indexed

arxivcs.AI2026-07-18

FUSAR-R1: A Large-Scale Reasoning Model for Intelligent Interpretation of SAR Images

Yi Yang, Xiaokun Zhang, Yuxuan Li, Ruyi Zhang, Xinpeng Zhou, Haipeng Wang

In recent years, large-scale vision-language models have been driving a paradigm shift in intelligent remote sensing image interpretation. By incorporating textual semantic information, the cognitive expression, semantic understanding, and human-computer interaction capabilities…

View free PDFSource page

arxivcs.LGcs.CL2026-07-15

Branching Policy Optimization: Sandbox-Native Language Agent Reinforcement Learning

Bowei He, Yankai Chen, Xiaokun Zhang, Xue Liu

Reinforcement learning has emerged as the dominant paradigm for training large language model (LLM) agents that interact with executable sandboxes. State-of-the-art algorithms such as PPO, RLOO, and GRPO inherit their rollout topology from RLHF: for each prompt, N independent tra…

View free PDFSource page