About Me

I am currently a master’s student at Carnegie Mellon University in the Language Technologies Institute, working with Prof. Daniel Fried on efficient reasoning for language models. I previously completed my undergraduate studies in Statistics at Zhejiang University. I have worked as a research intern at Alibaba Group, focusing on large-scale reinforcement learning to enhance the agentic search capabilities of LLMs.

Previously, I have worked with Prof. Arman Cohan and the YaleNLP group on LLM evaluations and information retrieval. I have also worked with Prof. Yang Yang on AI4Science (Foundation models for brain signal decoding).

🔥 News

2025.08: Joining CMU as a master student!
2025.07: Serving as a reviewer for EMNLP Demo Track.
2025.06: One Paper (Product-Searcher) submitted to EMNLP Industry Track!
2025.05: One Paper (Ref-long) accepted by ACL main!
2025.03: Joining Alibaba Group as a Research Intern!
2024.11: Present our work in-person at Miami, FL at EMNLP conference!
2024.10: New paper “TAIL: A Toolkit for Automatic and Realistic Long-Context Large Language Model Evaluation” has been accepted by EMNLP 2024 (Demo Track).
2024.07: Start as a visiting student at Yale University, working with Arman Cohan!
2024.01: Start my journey as an exchange student at HKUST!

📝 Publications

Under Review

Product-Searcher: Real-World E-commerce Product DeepSearch via Reinforcement Learning

Gefei Gu*, Wenhui Chen, Qiankun Shi, WangZhenhai, Xuanzhou Liu, Weiqi Wang, Chenhao Ding, Guannan Zhang

ACL 2025 Main