Kai Ruan阮恺

Ph.D. student, Gaoling School of Artificial Intelligence, Renmin University of China

kairuan@ruc.edu.cn/Google Scholar/GitHub/Hugging Face

Experience

2026 –
Research Intern, ByteDance
Multimodal LLM reinforcement learning
2025
Research Intern, OpenBMB
Multimodal LLM reinforcement learning

Education

2023 –
Ph.D., Artificial Intelligence
Gaoling School of Artificial Intelligence, Renmin University of China
2019 – 2023
B.E., Computer Science
School of Artificial Intelligence, Xidian University

Selected Publications

Discovering physical laws with parallel symbolic enumeration
Kai Ruan, Yilong Xu, Ze-Feng Gao, Yang Liu, Yike Guo, Ji-Rong Wen, Hao Sun
Nature Computational Science, 2026  ·  Cover Article, Vol. 6 Issue 1
DOIPDFCode
Evaluating LLMs' scientific creativity and idea generation with minimal context
Kai Ruan, Xuan Wang, Jixiang Hong, Peng Wang, Yang Liu, Hao Sun
Nature Communications, 2026
DOIPDFCodeDatasetModel
MedXIAOHE: A comprehensive recipe for building medical MLLMs
ByteDance XiaoHe Medical AI
Technical report, 2026  ·  #2 Paper of the Day, Hugging Face
arXivPDF
When Does Muon Help Agentic Reinforcement Learning?
Kai Ruan, Jinghao Lin, Zihe Huang, Ziqi Zhou, Qianshan Wei, Xuan Wang, Hao Sun
Preprint, 2026
arXivPDF
Doomed from the Start: Early Abort of LLM Agent Episodes via a Recall-Controlled Probe Cascade
Kai Ruan, Zihe Huang, Ziqi Zhou, Qianshan Wei, Jinghao Lin, Xuan Wang, Hao Sun
Preprint, 2026
arXivPDF
Benchmarking LLMs' swarm intelligence
Kai Ruan, Mowen Huang, Ji-Rong Wen, Hao Sun
Preprint, 2025
arXivPDF
AniMo: Species-aware model for text-driven animal motion generation
Xuan Wang*, Kai Ruan*, X Zhang, G Wang  (* equal contribution)
CVPR, 2025
PDFCode
X-MoGen: Unified motion generation across humans and animals
Xuan Wang*, Kai Ruan*, L Qian, Z Guo, C Su, G Wang  (* equal contribution)
AAAI, 2026
arXivPDF
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