I am Xiao Feng, a Ph.D. student at TMLR group of Hong Kong Baptist University, fortunate to be advised by Prof. Bo Han, and working with Prof. Jiangchao Yao. My research focuses on agentic reasoning and learning with foundation models. I work on: (1) building agentic systems that orchestrate foundation models and tools for complex tasks [AlphaApollo]; (2) understanding and benchmarking reasoning—such as visualizing LLM reasoning processes [Landscape of thoughts], active reasoning under incomplete information [AR-Bench], and robust multi-agent debate with memory masking [MAD-M²].

E-mail: xiaofeng [at] comp.hkbu.edu.hk

📖 Education and Experience

2025.09 - present, Ph.D. Student, TMLR Group, Hong Kong Baptist University, advised by Prof. Bo Han.
2021.09 - 2022.11, MSc in Artificial Intelligence, University of Southampton.
2017.09 - 2021.06, B.E. in Computer Science, Lanzhou University.

📝 Selected Publications

* Co-first author, ✉️ Corresponding author.

AlphaApollo: A System for Deep Agentic Reasoning.
Zhanke Zhou, Chentao Cao, Xiao Feng, Xuan Li, Zongze Li, Xiangyu Lu, Jiangchao Yao,
Weikai Huang, Linrui Xu, Tian Cheng, Jianghangfan Zhang, Tangyu Jiang, Linrui Xu, Yiming Zheng,
Brando Miranda, Tongliang Liu, Sanmi Koyejo, Masashi Sugiyama, Bo Han✉️
Technical Report. [paper] [code]

From Passive to Active Reasoning: Can Large Language Models Ask the Right Questions under Incomplete Information?
Zhanke Zhou*, Xiao Feng*, Zhaocheng Zhu, Jiangchao Yao, Sanmi Koyejo, Bo Han✉️
ICML 2025. [paper] [code] [slides] [poster] [EN-video] [CN-video] [CN-blog]

Landscape of Thoughts: Visualizing the Reasoning Process of Large Language Models.
Zhanke Zhou*, Zhaocheng Zhu*, Xuan Li*, Mikhail Galkin, Xiao Feng, Sanmi Koyejo, Jian Tang, Bo Han✉️
ICLR 2026. [paper] [code] [tutorial] [slides] [poster] [twitter]

Multi-Agent Debate with Memory Masking (MAD-M²).
Hongduan Tian, Xiao Feng, Ziyuan Zhao, Xiangyu Zhu, Rolan Yan, Bo Han✉️
ICLR 2026. [paper] [code]

🎖 Awards

HKBU PhD Transdisciplinary Research Scholarship Scheme, 2025.
Excellent Research Bronze Award of TMLR Group, 2024-2025.
Industry Collaboration Award of TMLR Group, 2024-2025.

💻 Services

Conference Reviewer: NeurIPS, ICLR, ICML, AAAI, ACL, AISTATS.
Journal Reviewer: TPAMI, JAIR, TNNLS, NEUNET.