Bebop: Breaking Entropy Bounds: Accelerating RL Training via MTP with Rejection Sampling
arXiv (2026)
Direct Ph.D. Student · Zhejiang University
Yuhao Shen (沈宇豪)
Hey, I'm Yuhao Shen, a direct PhD student at the College of Control Science and Engineering, Zhejiang University, advised by Prof. Cong Wang. I also received my B.E. degree from Zhejiang University.
My research lies in MLSys, LLM Inference, AI Infrastructure, and Edge Computing. Over the past two years, I have been deeply engaged in the field of speculative sampling and decoding. I was previously a research intern at Qwen Application and received an internship offer from the Tencent Hunyuan Qingyun Project. Currently, I am researching RL rollout acceleration in the Tongyi Qwen Foundation Model Infra group. Outside academia, I enjoy playing basketball, video games, and photography.
Recent News
- Congratulations, Double is chosen as ACL 2026 SAC Highlight Award! The SAC Highlight is an award given by the Senior Area Chairs to recognize one paper in their batch that they consider particularly outstanding.
- Congratulations, Vision-TTT is accepted to ECCV 2026!
- GLM-5.2 adopts our newly released MTP optimization from Bebop, using rejection sampling and e2e TV Loss to significantly improve this generation of MTP.
- Congratulations, ECHO is chosen as ICML 2026 Oral presentation and Double is chosen as ACL 2026 Oral presentation!
- Three new preprints are released: Maestro, Draft Less, Retrieve More, and When Hidden States Drift.
- Congratulations, ECHO is chosen as ICML 2026 Spotlight!
- Congratulations, Double is chosen as ACL 2026 Best Paper Candidate!
- Double and Spark are accepted to ACL 2026 Main Conference, and Atlas is accepted to ACL 2026 Findings!
- Two papers, Vision-TTT and ECHO, are submitted to arXiv!
- ParallelVLM is accepted at CVPR 2026!
- SpecBranch is accepted at ICLR 2026!
- Multiple papers including Double, Atlas, SSL, Spark, and TALON submitted to arXiv!
- Hetero2 Pipe is accepted at ICDCS 2025!
- I started my Direct Ph.D. journey at Zhejiang University!
Education
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Zhejiang University, Hangzhou, China Direct Ph.D. in Control Science and Engineering, 2024 - 2029 Advisor: Cong Wang |
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Zhejiang University, Hangzhou, China Bachelor of Engineering in Control Science and Engineering, 2020 - 2024 Advisor: Cong Wang |
Publications
ECHO: Elastic Speculative Decoding with Sparse Gating for High-Concurrency Scenarios
ICML Oral/Spotlight, 2026
Atlas: Orchestrating Heterogeneous Models and Tools for Multi-Domain Complex Reasoning
ACL 2026 Findings
Hetero2 Pipe: Pipelining Multi-DNN Inference on Heterogeneous Mobile Processors under Co-Execution Slowdown
IEEE 45th International Conference on Distributed Computing Systems (ICDCS), 2025
SENGraph: A self-learning evolutionary and node-aware graph network for soft sensing in industrial processes
IEEE Transactions on Neural Networks and Learning Systems, 2024
Vision-TTT: Efficient and Expressive Visual Representation Learning with Test-Time Training
European Conference on Computer Vision (ECCV), 2026
Profession
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Research Intern, Qwen Foundation Model May. 2026 - Present Topic: Speculative Decoding, RL Infra Advisor: Yucheng Li, Huiqiang Jiang Hangzhou, China |
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Research Intern, Qwen Application Nov. 2025 - May. 2026 Topic: Speculative Decoding, AI Infra Advisor: Ye Shuang, Jun Dai, Lei Chen Hangzhou, China |