I am a Ph.D. candidate in Computer Science at UIUC , advised by Professors Tong Zhang and Huan Zhang. Previously, I received bachelor’s and master’s degrees from Tsinghua University and HKUST .

My research focuses on building reliable interactive agents powered by foundation models that can perceive multimodal inputs, reason about complex tasks, evaluate outcomes, and act effectively in dynamic environments. I also study robust learning under distribution shift and imperfect feedback, spanning LLM/VLM alignment, reward modeling, and robust offline and goal-conditioned RL.

Multimodal agents

Scalable post-training and evaluation for multimodal agents that perceive accurately, assess their current state, and reason and act effectively over long horizons.

Trustworthy alignment & evaluation

Aligning LLMs/VLMs with heterogeneous human preferences, together with robust reasoning evaluation under changing inputs.

Robust and generalizable RL

Robust offline and goal-conditioned RL under data corruption, observation shifts, and unseen goals.

I am actively seeking full-time opportunities in foundation models, AI agents, and reinforcement learning.

News

  • 🌟 2026.06 We released OpenWebRL, an open framework for training visual web agents with online multi-turn RL on live websites, and Orchard, an open-source framework with scalable training recipes across diverse agent domains.
  • 🎉 2026.04 ReCAP was accepted to ICML 2026.
  • 🌟 2026.02 We released GUI-Libra, a data-efficient post-training recipe for GUI agents that achieves strong online performance using 81K open-source examples.
  • 🎉 2026.01 BEAT and DROCO were accepted to ICLR 2026.
  • 🎉 2025.11 MiCRo received an EMNLP 2025 Outstanding Paper Award.
  • 🎉 2025.09 GUI-Actor and ADG were accepted to NeurIPS 2025, and MergeBench to the Datasets & Benchmarks Track.
  • 🎉 2025.05 EmbodiedBench was accepted to ICML 2025 as an oral paper.

Selected Publications

* Equal contribution. Selected papers I led or co-led; see Google Scholar for the full list.

Foundation Models for Interactive Agents

Reliable Reasoning and Alignment

Robust Offline RL and Goal-Conditioned RL

Experience

  • Research Intern, Apple Foundation Models, 2026.

  • Research Intern, Microsoft Research, Deep Learning Group, 2025.

  • Research Intern, Tencent AI Lab and Robotics X Lab, 2020–2022 (multiple internship terms).

  • Machine Learning Intern, Meituan, 2019.

Service

Conference Reviewer: ICML, ICLR, NeurIPS (NeurIPS 2023 Top Reviewer), ACL/ARR, ICRA, AAMAS.

Journal Reviewer: IEEE Robotics and Automation Letters (RA-L), IEEE Transactions on Neural Networks and Learning Systems (TNNLS), IEEE Transactions on Artificial Intelligence (TAI), Machine Learning, Journal of Artificial Intelligence Research.

Teaching Assistant: CS 441 Applied Machine Learning, UIUC; COMP 4211 Machine Learning, HKUST; COMP 1021 Introduction to Computer Science, HKUST.

Hobbies

Outside research, I enjoy 🏃 running, 🏓 table tennis, and 🏊 swimming. My personal bests are 1 h 30 min in the half marathon and 3 h 36 min in the marathon.