I work on LLM post-training as part of DeepSeek’s CodeMath team. Since joining the team in February 2025, my work has spanned STEM reasoning, search agents, RL algorithm optimization, and the evaluation of code agents and generation of training data.
I received my Ph.D. in Computer Science from Peking University in January 2026, where I was advised by Prof. Tong Yang, and received my bachelor’s degree from Peking University in 2021. During my studies at Peking University, my research focused on designing efficient data structures for high-performance networking and database systems.
📧 Email: yuhan.wu AAT pku.edu.cn
💬 WeChat: yuhanwuuu
Education 🎓
| Degree | Institution | Major | Year |
|---|---|---|---|
| B.S. 本科 | Peking University 北京大学 | Electronics Engineering and Computer Science 信息科学技术学院 | 2017.9 – 2021.6 |
| Ph.D. 博士 | Peking University 北京大学 | Computer Science 计算机学院 | 2021.9 – 2026.1 |
Fundings & Scholarships
| Fundings & Scholarships | 基金&奖学金 |
|---|---|
| NSFC Grant (300,000 RMB) (Top 1%) | 国家自然科学基金博士研究生项目，30万元，北大计算机Top5 |
| National Scholarship (China) (Top 1%) | 研究生国家奖学金，北大计算机Top 9 |
| Presidential Scholarship (Top 1%) | 北京大学“博士研究生校长奖学金”，北大计算机Top 4 |
| Huawei Scholarship | 华为奖学金 |
| Tun Scholarship | 北京大学董氏奖学金 |
| Wei Lin Scholarship | 北京大学巍璘奖学金 |
Awards
| Awards | 获奖 |
|---|---|
| Beijing Outstanding Undergraduate Thesis (Top 1%) | 北京市优秀本科毕业设计，全校35人入选，北大前1% |
| Outstanding Graduates of Beijing | 北京市优秀毕业生 |
| PKU Junior Scholar (Top 1%) | 北京大学未名学士，拔尖计划，全校50人入选 |
| Outstanding Reviewer Award, KDD 2023 | KDD 杰出审稿人奖 |
| Huawei Olympus Award | 华为奥林帕斯先锋奖 |
| Top 10 Undergraduate Thesis Award, PKU EECS | 北京大学信息科学技术学院“十佳”本科毕业设计 |
| Outstanding Undergraduate Research Award, PKU | 北京大学本科生科研训练优秀项目奖 |
| Academic Innovation Award, PKU | 北京大学“学术创新奖” |
| Excellent Graduate, PKU | 北京大学优秀毕业生 |
| Pacemaker to Merit Student, PKU | 北京大学三好学生标兵 |
| Merit Student, PKU | 北京大学三好学生 |
Competitions
| Competitions | 竞赛 |
|---|---|
| NOI 2015 – Silver Medal | 全国信息学奥林匹克竞赛银牌 |
| NOI 2016 – Silver Medal | 全国信息学奥林匹克竞赛银牌 |
| ACM-ICPC Asia Regional Contest Shenyang Site 2018 – Silver Medal | ACM-ICPC 亚洲区域赛 沈阳站 2018 – 银牌 |
Publications
| No. | Authors & Title | Venue | Role |
|---|---|---|---|
| 1 | Yuhan Wu, Aomufei Yuan, Zhouran Shi, et al. “Online Detection of Outstanding Quantiles with QuantileFilter.” | ICDE 2024 | Independent First Author, CCF-A |
| 2 | Yuhan Wu, Feiyu Wang, Yifan Zhu, et al. “VisionEmbedder: Bit-Level-Compact Key-Value Storage with Constant Lookup, Rapid Updates, and Rare Failure.” | ICDE 2024 | Independent First Author, CCF-A |
| 3 | Yuhan Wu, Hanbo Wu, Chengjun Jia, et al. “Scalable Overspeed Item Detection in Streams.” | ICDE 2024 | First-ranked Co-First Author, CCF-A |
| 4 | Yuhan Wu, Shiqi Jiang, Siyuan Dong, et al. “MicroscopeSketch: Accurate Sliding Estimation Using Adaptive Zooming.” | KDD 2023 | First-ranked Co-First Author, CCF-A |
| 5 | Yuhan Wu, Jintao He, Shen Yan, et al. “Elastic Bloom Filter: Deletable and Expandable Filter using Elastic Fingerprints.” | IEEE Transactions on Computers 2021 | First-ranked Co-First Author, CCF-A |
| 6 | Yuhan Wu, Zirui Liu, Xiang Yu, et al. “MapEmbed: Perfect Hashing with High Load Factor and Fast Update.” | KDD 2021 | First-ranked Co-First Author, CCF-A |
| 7 | Yuhan Wu, Siyuan Dong, Yi Zhou, et al. “Kvsagg: Secure aggregation of distributed key-value sets.” | ICDE 2023 | First-ranked Co-First Author, CCF-A |
| 8 | Kaicheng Yang, Yuhan Wu, Ruijie Miao, et al. “ChameleMon: Shifting Measurement Attention as Network State Changes.” | SIGCOMM 2023 | Co-First Author, CCF-A |
| 9 | Jiarui Guo, Yisen Hong, Yuhan Wu, et al. “SketchPolymer: Estimate Per-item Tail Quantile Using One Sketch.” | KDD 2023 | Co-First Author, CCF-A |
| 10 | Zhuochen Fan, Zhoujing Hu, Yuhan Wu, et al. “PISketch: Finding Persistent and Infrequent Flows.” | IEEE/ACM Transactions on Networking | Co-First Author, CCF-A |
Hiking
| English | 中文 |
|---|---|
| Hiking | 徒步 |
| Captain of Peking University Hiking Team (2024), President of Peking University Hiking Association (2025), Led a team on the XiaTa Grand Loop in Xinjiang. | 北京大学徒步队队长（2024），北京大学徒步爱好者协会会长与常务理事（2025），曾带队新疆夏塔大环线。 |
| Trail Running | 越野跑 |
| Finisher of ULTRA-TRAIL MOUNT YUN BY UTMB® 50KM category. | 云丘山越野赛 by UTMB 50KM组 完赛者。 |
Photos
