Rui Lu
Also known as 卢睿
Rui Lu is a machine-learning researcher at Tsinghua University who coauthored a NeurIPS 2025 Best Paper Runner-Up on reinforcement learning and LLM reasoning. After studying in Tsinghua's Yao Class from 2016 to 2021, Lu began a PhD in the Department of Automation under Gao Huang, with papers on multitask representation learning theory, offline reinforcement learning and visual backbones. In 2024, Lu visited Princeton University as a scholar and coauthored a study of whether video generation models learn physical laws. The 2025 paper on reinforcement learning with verifiable rewards (RLVR), written with Yang Yue, Zhiqi Chen and colleagues, found that the reasoning abilities of RLVR-trained models originate from and are bounded by the base model, and it won Best Paper at the ICML 2025 AI4Math workshop. As of October 2026, Lu is a PhD student at Tsinghua and is on the job market.
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Timeline
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2016–2021
Yao Class and Berkeley
From 2016 to 2021, Lu studies in the Yao Class at Tsinghua University's Institute of Interdisciplinary Information Sciences, with Yang Yuan advising the undergraduate thesis. In 2019, they spend a summer as a visiting student at the Berkeley BAIR Center under Jitendra Malik, working on indoor 3D detection and pose estimation.
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2021–2022
A PhD under Gao Huang
In 2021, Lu starts a PhD in the Department of Automation at Tsinghua University, advised by Gao Huang. An arXiv paper from 2021 with Gao Huang and Simon S. Du, "On the Power of Multitask Representation Learning in Linear MDP", analyzes the statistical benefit of multitask representation learning in linear Markov decision processes. From 2021 to 2022, they also work as an intern researcher at SenseTime on visual backbones, supervised by Xizhou Zhu.
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2022
General function classes at NeurIPS
With Andrew Zhao, Simon S. Du and Gao Huang, they write "Provable General Function Class Representation Learning in Multitask Bandits and MDPs" in 2022. The paper introduces the GFUCB algorithm for learning a shared representation across contextual bandits and MDPs, and NeurIPS 2022 accepts it as a spotlight.
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2023
Offline RL and curriculum learning
NeurIPS 2023 publishes "Understanding, Predicting and Better Resolving Q-Value Divergence in Offline-RL", which they coauthor with Yang Yue, Bingyi Kang, Shiji Song and Gao Huang. ICCV 2023 also accepts their paper on generalized curriculum learning for training visual backbones, EfficientTrain, written with Yulin Wang, Yang Yue and others.
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2024
Princeton and a video-model study
They are a visiting scholar at Princeton University in 2024, supervised by Mengdi Wang. In November 2024, they coauthor "How Far is Video Generation from World Model: A Physical Law Perspective" with Bingyi Kang, Yang Yue, Gao Huang, Jiashi Feng and others, a study of diffusion video models trained on a 2D simulation testbed for object movement and collisions. The models mimic the closest training example when they meet new cases, and ICML 2025 takes the paper.
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2025
Probing RLVR with pass@k
A study of reinforcement learning with verifiable rewards (RLVR) across math, coding and visual reasoning benchmarks appears on arXiv in April 2025, with Lu as third author after Yang Yue and Zhiqi Chen. Using pass@k at large k as the metric, the authors find that the reasoning abilities of RLVR-trained models originate from and are bounded by the base model, and that distillation can introduce new reasoning patterns from the teacher. The paper wins Best Paper at the ICML 2025 AI4Math workshop.
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2025
A NeurIPS runner-up award
In November 2025, NeurIPS names their RLVR paper one of three runner-ups in its 2025 best paper awards, next to four best papers. The selection committee's reflection frames the work as a test of the widely accepted assumption that RLVR elicits genuinely new reasoning capabilities.
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As of October 2026
Tsinghua PhD on the job market
As of October 2026, they are a PhD student in the Department of Automation at Tsinghua University, advised by Gao Huang, and they are on the job market. Their research interests span machine learning, computer vision and reinforcement learning, aimed at a principled theory of deep learning's effectiveness and limitations.
Career
- 2024Princeton UniversityVisiting scholar
- 2021–2022SenseTimeIntern researcher
- 2019University of California, BerkeleyVisiting student
Education
- 2021Tsinghua UniversityUndergraduate student
- From 2021Tsinghua UniversityPhD
Sources and credits
Photo: We have no published photo of Rui Lu yet. Send us a free-licensed photo.
- About Me - Rui Lu
- CV - Rui Lu
- [2106.08053] On the Power of Multitask Representation Learning in Linear MDP
- [2205.15701] Provable General Function Class Representation Learning in Multitask Bandits and MDPs
- Publications - Rui Lu
- [2411.02385] How Far is Video Generation from World Model: A Physical Law Perspective
- [2504.13837] Does Reinforcement Learning Really Incentivize Reasoning Capacity in LLMs Beyond the Base Model?
- Limit of RLVR
- Announcing the NeurIPS 2025 Best Paper Awards – NeurIPS Blog

