Basic Infomation
Hi there π , I'm Jiajun Liu (εεδΏ), a third-year undergraduate at Gaoling School of Artificial Intelligence, Renmin University of China.
My research interests lie in Spatial Intelligence, World Model, and Embodied AI.
I am proficient in Linux development, Python, C/C++, and deep learning frameworks like PyTorch. I am a firm open source contributor.
Research Experience
Advisor: Chongxuan Li
Topic: 3D world model for explorable scene generation from a single image or text prompt.
Mentor: Manling Li
Topic: RL-based VLM agents with tool-use abilities to get novel-view images to help improve performance on spatial intelligence tasks, in collaboration with Microsoft.
Selteced Project Experience
Embodied Reasoner (With OSPP's funding, 150+ Github Stars) Main contributor [Page]
Embodied-Reasoner (ER.) is a multimodal model designed for deep reasoning & long-horizon interaction. In OSPP, similar to GSoC, AGIROS Community selected me as the contributor in charge of ER. from all the applicants. I've committed to testing ER. on Alfred and contributed to resolving two key bottlenecks β ambiguity in identical object instances & imprecise targeting of large objects, further improving spatial accuracy and interaction robustness.
RAGEN & VAGEN: Training Agents by Reinforcing Reasoning (With 2.2k+ Github Stars) Contributor [Code]
This twin of projects empower agents with RL to operate effectively in interactive and stochastic environments by handling multi-turn interactions and environmental uncertainty. I contributed to developing more environments and mask functions to compute the loss only for the parts generated by the model, which actually made training more stable.
π Selected Awards
- π₯ Silver Medal, International Collegiate Programming Contest (ICPC) East-Asia Continent Final (Dec 2024)
- π₯ Gold Medal, "Xiaomi Cup" China Collegiate Programming Contest (CCPC) Invitational Contest (Apr 2025)
- π₯ Silver Medal, 2024 CCF Collegiate Computer Systems & Programming Contest (CCSP) (Oct 2024)
- π₯ Bronze Medal, 2024 China Collegiate Programming Contest (CCPC) Final (May 2025)
- π» Top 2.6% out of 22k+ Globally, 2024 Meta Hacker Cup Human track (Oct 2024)
- π National Second Prize, Chinese Physics Olympiad for High School Students (CPhO) (Oct 2021)
π Scholarship
- π National Scholarship (Sep 2025)
- β¨ "Linghang" Intellectual Excellence Dean's Scholarship (Dec 2024)
- π Outstanding Student Leader Scholarship (Sep 2024)
Services and Presentations
- Video: "My Experience Using AI+ Tools to Create Videos" (Oct 2024)
- Talk: "Algorithm and Artificial Intelligence" (Mar 2025)
Education Experience
- 2023 - 2027 | Bachelor's degree, Gaoling School of Artificial Intelligence, Renmin University of China
- GPA: 3.87/4.00 (Rank 3 / 58), ranking 1-st in the first and fourth semester
Last updated: September, 2025