Yixuan Even Xu


Yao Class 02, IIIS, Tsinghua


I am Yixuan (Even) Xu (徐翊轩), a senior-year undergraduate student majoring in Computer Science and Technology at IIIS, Tsinghua University (a.k.a. Yao Class, directed by Andrew Chi-Chih Yao).

My research interests lie broadly in artificial intelligence, especially topics related to economics and computation. I have worked on several projects centered around algorithmic game theory, including conference peer review, bilateral trade, and learning the coalition structure of strategic agents. See my CV and publications for more details about them.

Besides research, I have been actively participating in competitive programming. See my CV for selected awards in OI, ICPC and CCPC. You can also find me in Codeforces, Atcoder and Project Euler.


Apr 18, 2024 Our team got 10th place in the 46th ICPC World Finals!
Apr 8, 2024 I have just decided to attend CMU CSD’s PhD program this fall.
Feb 25, 2024 I have just attended AAAI 2024!
Jan 23, 2024 One paper got accepted at WWW 2024 as an oral!
Dec 16, 2023 I have just attended NeurIPS 2023!
Dec 9, 2023 Two papers got accepted at AAAI 2024!
Nov 7, 2023 I was awarded Wang Dazhong Scholarship by Tsinghua University!
Sep 22, 2023 One paper got accepted at NeurIPS 2023 as a spotlight!
Sep 17, 2023 I was awarded Yao Award by IIIS!
Sep 1, 2023 I have finished my visit at Carnegie Mellon University.
Jun 23, 2023 One paper got accepted at ESA 2023!
Feb 10, 2023 I am visiting Carnegie Mellon, advised by Prof. Fei Fang and Prof. Vincent Conitzer.
Oct 28, 2022 I was awarded Jiang Nanxiang Scholarship by Tsinghua University!
Jul 20, 2022 Our team got 3rd place in ICPC EC Final 2021!
Oct 25, 2021 I was awarded National Scholarship by Ministry of Education!
May 30, 2021 Our team got 3rd place in CCPC Final 2020!

Selected Publications

  1. Bidder Selection Problem in Position Auctions: A Fast and Simple Algorithm via Poisson Approximation
    Nick Gravin*Yixuan Even Xu*, and Renfei Zhou*
    To appear at The Web Conference, 2024
    Selected for Oral Presentation
  2. Learning Coalition Structures with Games
    Yixuan Even XuChun Kai Ling, and Fei Fang
    In Proceedings of the AAAI Conference on Artificial Intelligence, 2024
  3. Non-excludable Bilateral Trade between Groups
    Yixuan Even XuHanrui Zhang, and Vincent Conitzer
    In Proceedings of the AAAI Conference on Artificial Intelligence, 2024
  4. A One-Size-Fits-All Approach to Improving Randomness in Paper Assignment
    Yixuan Xu, Steven Jecmen, Zimeng Song, and Fei Fang
    In Advances in Neural Information Processing Systems, 2023
    Selected for Spotlight Presentation