Hyunsik Yoo
Ph.D. student in Computer Science at IL, UIUC
Contact: hy40_[at]_illinois.edu
Biography
I am a Ph.D. student in Computer Science at the University of Illinois Urbana-Champaign, where I am advised by Prof. Hanghang Tong. I received my M.S. and B.S. in Computer Science from Hanyang University, where I was advised by Prof. Sang-Wook Kim.
My research explores data mining and machine learning, specializing in graph (network) data learning. I aim to use insights from networks or temporal features to enhance real-world applications, with a current emphasis on ensuring algorithmic fairness and robustness in graph mining/recommender systems. I am also interested in continual learning and temporal aspects.
Interests
Graph Learning, Recommender Systems, Algorithmic Fairness and Robustness, Continual Learning
Publication
[1] Class-Imbalanced Graph Learning without Class Rebalancing
Zhining Liu, Ruizhong Qiu, Zhichen Zeng, Hyunsik Yoo, David Zhou, Zhe Xu, Yada Zhu, Kommy Weldemariam, Jingrui He, Hanghang Tong
ICML 2024
[2] Ensuring User-side Fairness in Dynamic Recommender Systems
Hyunsik Yoo, Zhichen Zeng, Jian Kang, Ruizhong Qiu, David Zhou, Zhining Liu, Fei Wang, Charlie Xu, Eunice Chan, and Hanghang Tong [paper]
ACM WWW 2024 | Oral presentation
[3] Disentangling Degree-related Biases and Interest for Out-of-Distribution Generalized Directed Network Embedding [paper | code]
Hyunsik Yoo, Yeon-Chang Lee, Kijung Shin, and Sang-Wook Kim
ACM WWW 2023
[4] Directed Network Embedding with Virtual Negative Edges [paper | project page | code]
Hyunsik Yoo*, Yeon-Chang Lee*, Kijung Shin, and Sang-Wook Kim
ACM WSDM 2022
Education
University of Illinois Urbana-Champaign, Illinois, U.S.
Ph.D. in Computer Science, Aug. 2022 - Present
Advisor: Prof. Hanghang Tong
Hanyang University, Seoul, South Korea
M.S. in Computer Science, Mar. 2020 - Feb. 2022
Advisor: Prof. Sang-Wook Kim
B.S. in Computer Science & Engineering, Mar. 2013 - Feb. 2020
(Period includes 21 months of military service in Republic of Korea Army)
Positions
ECIT, Queen's University Belfast, Northern Ireland, UK
Research Intern, Sept. 2018 - Dec. 2018
Advisor: Prof. BooJoong Kang
Honors & Awards
Summa Cum Laude Graduation Honors, 2020
Academic Excellence Award (Top 3% in CS), 2017, 2018
Excellent Mentoring Team Award, 2017
Teaching
Teaching Assitant
UIUC. CS412 Introduction to Data Mining, Fall 2023
Tutor
Hanyang Univ. Python training for high school students (student volunteer), Spring 2019