Qirun Zeng
Ph.D. candidate in Computer Science at City University of Hong Kong
I study learning and decision-making under uncertainty, focusing on bandit learning, feedback design, and adversarial robustness. My interests also include sequential inference and combinatorial optimization. My advisor is Prof. Jinhang Zuo.
Previously, I worked as a research assistant with Prof. Sibo Wang at the Chinese University of Hong Kong from July to October 2024. I received my bachelor’s degree in Computer Science and Technology from the School of the Gifted Young at the University of Science and Technology of China, where I was advised by Prof. Xue Chen and Prof. Jinhang Zuo.
Selected Publications
⋆ Equal contribution.
Practical Adversarial Attacks on Stochastic Bandits via Fake Data Injection
Recent News
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Our paper WEREWOLF: Reputation-Aware Red-Teaming for Self-Organizing LLM Multi-Agent Systems was accepted to Findings of EMNLP 2026.
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Our paper One Rounding Fits All: Memory-Efficient Approximation Algorithms for Partition-Constrained Influence Maximization was accepted to KDD 2026.
Service
Reviewer
- 2027
AISTATS and WWW.
- 2026
ICLR and NeurIPS.
- 2025
ICML and NeurIPS.
Programming
| Account | Rating | Peak | Solved |
|---|---|---|---|
| Codeforces | 1630 | 1648 | 118 |
| AtCoder | 984 | 1023 | 71 |
| LeetCode | 1920 | 1920 | 116 |
| Luogu | 1216 | 1216 | 82 |
Updated
Explore topics & languages
387 platform solves across 4 accounts
Problems by topic
Problems can have multiple topics.
- Unclassified192
- Greedy78
- Math60
- Simulation58
- Dynamic programming45
- Brute force39
Other (20) 267
- Constructive algorithms34
- Sorting31
- Other algorithms30
- Data structures26
- Search24
- Binary search22
- Strings16
- Graphs13
- Number theory13
- Bitmasks10
- Trees10
- Two pointers9
- Game theory8
- Interactive6
- Combinatorics5
- Divide and conquer3
- Geometry2
- Hashing2
- Scheduling2
- Probability1
Languages
Problems can appear in multiple languages.
- C++241
- Not public82
- Python60
- C4
- Rust2
Topic coverage: Codeforces and Luogu. Language coverage: Codeforces, AtCoder and LeetCode. Missing data remains visible as Unclassified or Not public.