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Lang Feng

PhD Student @ Nanyang Technological University

  • Reinforcement Learning
  • Large Language Models
  • LLM Post-Training
  • Agent RL

About Me

I am currently pursuing my Ph.D. in the College of Computing and Data Science at Nanyang Technological University, working with Prof. Bo An. My research focuses on reinforcement learning (RL), large language models (LLMs), LLM post-training, and LLM-based agents.

Prior to my Ph.D., I obtained my M.Eng. from Zhejiang University, where I worked with Prof. Gang Pan on neuromorphic computing and multi-agent reinforcement learning. I earned my B.Eng. (Hons.) from Southeast University, conducting research on communication systems with Prof. Liang Wu.

Selected Publications

Towards Efficient Online Tuning of VLM Agents via Counterfactual Soft Reinforcement Learning
Lang Feng, Weihao Tan, Zhiyi Lyu, Longtao Zheng, Haiyang Xu, Ming Yan, Fei Huang, Bo An
ICML 2025
Policy Regularization on Globally Accessible States in Cross-Dynamics Reinforcement Learning
Zhenghai Xue, Lang Feng, Jiacheng Xu, Kang Kang, Xiang Wen, Bo An, Shuicheng Yan
ICML 2025
Spotlight
Diffusion-Guided Diversity for Single Domain Generalization in Time Series Classification
Junru Zhang, Lang Feng, Xu Guo, Han Yu, Yabo Dong, Duanqing Xu
KDD 2025
Resisting Stochastic Risk in Diffusion Planners with the Trajectory Aggregation Tree
Lang Feng, Pengjie Gu, Bo An, Gang Pan
ICML 2024
Spotlight
Diverse Intra- and Inter-Domain Activity Style Fusion for Cross-Person Generalization in Activity Recognition
Junru Zhang, Lang Feng, Zhidan Liu, Yuhan Wu, Yang He, Yabo Dong, Duanqing Xu
KDD 2024
Multi-Level Firing with Spiking DS-ResNet: Enabling Better and Deeper Directly-Trained Spiking Neural Networks
Lang Feng, Qianhui Liu, Huajin Tang, De Ma, Gang Pan
IJCAI 2022

For a complete list of publications, please refer to my Google Scholar profile.

Honors & Awards