Zhaohua Chen's photo
Me with skate-boards.

Minimum About Me

My name in simplified Chinese: 陈炤桦 (Chén Zhàohuà).

I am currently a second-year Ph.D student at Center on Frontiers of Computing Studies (CFCS), School of Computer Science, Peking University, honered to be advised by Prof. Xiaotie Deng. I received my BSc (Summa Cum Laude) in artificial intelligence (Turing class) from Peking University, 2021.

Research Interests

I am much interested in the interplay of computer science and economics, also known as algorithmic game theory. More specifically, I am currently working on various problems in ad auctions. Previously, I have worked on the scalability issue of blockchain, when I mainly focused on the application of game theory and mechanism design in the field of blockchain.

Working Papers

Coordinated Dynamic Bidding in Repeated Second-Price Auctions with Budgets
Yurong Chen, Zhaohua Chen, Xiaotie Deng, Zhijian Duan, Haoran Sun, Qian Wang, Xiang Yan

On the Re-Solving Heuristic for (Binary) Contextual Bandits with Knapsacks
Rui Ai, Zhaohua Chen, Xiaotie Deng, Yuqi Pan, Chang Wang, Mingwei Yang
arXiv: 2211.13952

Dynamic Budget Throttling in Repeated Second-Price Auctions
Zhaohua Chen*, Chang Wang*, Qian Wang*, Yuqi Pan, Zhuming Shi, Zheng Cai, Yukun Ren, Zhihua Zhu, Xiaotie Deng
arXiv: 2207.04690

Budget-Constrained Auctions with Unassured Priors: Strategic Equivalence and Structural Properties
Zhaohua Chen*, Xiaotie Deng*, Jicheng Li*, Chang Wang*, Mingwei Yang*, Zheng Cai, Yukun Ren, Zhihua Zhu
arXiv: 2203.16816
SSRN: 4071291

On Tightness of Tsaknakis-Spirakis Descent Methods for Approximate Nash Equilibria
Zhaohua Chen, Xiaotie Deng, Wenhan Huang, Hanyu Li and Yuhao Li
(Extended version of "On Tightness of the Tsaknakis-Spirakis Algorithm for Approximate Nash Equilibrium")
arXiv: 2107.01471
SSRN: 4173771

Publications

An Efficient and Robust Committee Structure for Sharding Blockchain
Mengqian Zhang*, Jichen Li*, Zhaohua Chen*, Hongyin Chen* and Xiaotie Deng
Journal: IEEE Transactions on Cloud Computing
(Extended version of "CycLedger: A Scalable and Secure Parallel Protocol for Distributed Ledger via Sharding")
doi: 10.1109/TCC.2022.3217856 (Early access)
arXiv: 2112.15322

A Provable Softmax Reputation-based Protocol for Permissioned Blockchains
Hongyin Chen*, Zhaohua Chen*, Yukun Cheng, Xiaotie Deng, Wenhan Huang, Jichen Li, Hongyi Ling* and Mengqian Zhang
Journal: IEEE Transactions on Cloud Computing
(Extended version of "An Efficient Permissioned Blockchain Model with Provable Reputation Mechanism")
doi: 10.1109/TCC.2021.3130244 (Early access)

Decentralized Asset Custody Scheme with Security against Rational Adversary
Zhaohua Chen and Guang Yang
Conference: WINE 2021
doi: 10.1007/978-3-030-94676-0_25
arXiv: 2008.10895
Cryptology ePrint Archive: 2020/1229

On Tightness of the Tsaknakis-Spirakis Algorithm for Approximate Nash Equilibrium
Zhaohua Chen, Xiaotie Deng, Wenhan Huang, Hanyu Li* and Yuhao Li
Conference: SAGT 2021
doi: 10.1007/978-3-030-85947-3_7

An Efficient Permissioned Blockchain Model with Provable Reputation Mechanism
Hongyin Chen*, Zhaohua Chen*, Yukun Cheng, Xiaotie Deng, Wenhan Huang, Jichen Li, Hongyi Ling* and Mengqian Zhang
Conference: ICDCS 2021 (Poster)
doi: 10.1109/ICDCS51616.2021.00123
arXiv: 2002.06852

CycLedger: A Scalable and Secure Parallel Protocol for Distributed Ledger via Sharding
Mengqian Zhang*, Jichen Li*, Zhaohua Chen*, Hongyin Chen* and Xiaotie Deng
Conference: IPDPS 2020 (Best paper nominee)
doi: 10.1109/IPDPS47924.2020.00045
arXiv: 2001.06778

Patents

CN112419060A. Asset hosting system, asset management method, node and medium (资产托管系统、资产管理方法、节点及介质)
Inventor: YANG GUANG (杨光), CHEN ZHAOHUA (陈炤桦), WU MING (伍鸣), LONG FAN (龙凡), LI CHENXING (李辰星)

Teachings

Advisor:
Billiards   Yuanpei College, Peking University, October 2022 -- December 2022

Teaching Assistant:
Study and Practice on Topics of Frontier Computing (I)   Peking University, September 2022 -- January 2023
Discrete Math and Structures (I)   Peking University, September 2021 -- January 2022
Discrete Math and Structures (I)   Peking University, September 2020 -- January 2021
Blockchain Theory and Technique   Peking University, September 2019 -- January 2020

Professional Services

Conference Reviewing: GameSec 2021, IPDPS 2020

Journal Reviewing: SIAM Journal on Computing

Volunteer Experience: CSIAM-BTAF 2021, IJTCS 2021 (Undergraduate Research Forum Chair), WINE 2020 (Volunteer Group Leader, in Local Organization Committee), IJTCS 2020

More About Me

I indulge in billiards. Billiards is like breath to me. I'm now in the billiards team of Peking University.
I love snooker, of course. Yet I'm not good at that.
I love basketball and shuttlecock as well.
I also play table tennis.

My favorite snooker player is Kyren Wilson.
I'm a super fan of Golden State Warriors in NBA.

I love guitar. I began playing guitar as I was deeply impressed by Tayu Lo (罗大佑) and Jonathan Lee (李宗盛). I learned to play some Kotaro Oshio's music when getting started. Nevertheless, due to the increasing work and pressure, I haven't played guitar for two years or so. I'm now trying to get it back.

Last updated: 2023-02-06.