Qi Liu

My name is Qi Liu. I am a third-year PhD student at the Gaoling School of Artificial Intelligence, Renmin University of China, advised by Prof. Jiaxin Mao. From January to July 2026, I was a visiting PhD student at NExT++, National University of Singapore, where I worked with Dr. Fengbin Zhu and Prof. Tat-Seng Chua on search agents.

My research focuses on Effective, Efficient, and Expressive Agentic Search, specifically in the following three directions:

• Search Models: Developing effective and efficient retrieval and reranking models for search in the AI era.
• Search Agents: Understanding and improving how agents plan searches, formulate queries, and acquire and use information.
• Search Harnesses: Designing expressive interfaces for flexible information access and search execution.

I am now also working on post-training for coding and work agents.

Education

• 09/2024 - Present. PhD in Artificial Intelligence, Gaoling School of Artificial Intelligence, Renmin University of China, Beijing, China.
• 09/2020 - 06/2024. B.Eng. in Artificial Intelligence, Gaoling School of Artificial Intelligence, Renmin University of China, Beijing, China.

Experience

• 11/2026 - Present. Research Intern, Hunyuan Team, Tencent, Beijing, China.
• 05/2026 - 10/2026. Research Intern, Dots Agent, Xiaohongshu, Beijing, China.
• 01/2026 - 07/2026. Visiting PhD Student, NExT++ Research Center, National University of Singapore, Singapore.
• 05/2025 - 01/2026. Research Intern, Tongyi Lab, Alibaba Group, Beijing, China.
• 11/2023 - 06/2024. Research Intern, Jina AI, Beijing, China.

Services