My name is Doyun Choi, and I am a Ph.D student in the Data Artificial Intelligence (DAI) Lab at Seoul National University (SNU), advised by Prof. Jaemin Yoo.
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[Contact]
π§ : doyun.choi@snu.ac.kr (doyun.choi@da.snu.ac.kr)
π₯οΈ : Github Repository
π : Google Scholar
[Research Interest]
Representation Learning on Structured Data
(Recommender Systems, Anomaly Detection, Knowledge Graphs, ...)
Robust Inference on Diverse Environments
(Distribution Shifts, Self-Interpretable Prediction, ...)
π§βπ Education
π§βπ Education
Ph.D Student (26.03 ~ )
School : Seoul National University (SNU)
Dept : Computer Science & Engineering (CSE)
M.S (24.02 ~ 26.02)
School : Korea Advanced Institute of Science and Technology (KAIST)
Dept : Electrical Engineering (EE)
Advisor : Prof. Jaemin Yoo
GPA : 4.07 / 4.3
Thesis : Advancing Graph Collaborative Filtering with Self-Supervised Data Augmentation and Social Network Information
Based on accepted conference publications [C2], [C3]
B.S (18.03 ~ 24.02)
School : University of Seoul (UOS)
Dept : Electrical & Computer Engineering (ECE)
GPA : 4.36 / 4.5 (Major GPA 4.38 / 4.5)Β
π Graduated Summa Cum Laude (2nd / 92) π
π Publications (Conference, Journal, Workshop)
π Publications (Conference, Journal, Workshop)
[C1] Parameter-Free Hypergraph Neural Network for Few-Shot Node Classification (NeurIPS 2025) (Paper, Code)
Chaewoon Bae, Doyun Choi, Jaehyun Lee, Jaemin Yoo
[C2] Simple and Behavior-Driven Augmentation for Recommendation with Rich Collaborative Signals (IEEE BigData 2025) (Paper, Code)
Doyun Choi, Cheonwoo Lee, Jaemin Yoo
[C3] PULSE: Socially-Aware User Representation Modeling Toward Parameter-Efficient Graph Collaborative Filtering (WWW 2026) (Paper, Code) (Oral)
Doyun Choi*, Cheonwoo Lee*, Biniyam Aschalew Tolera, Taewook Ham, Chanyoung Park, Jaemin Yoo
Top 9.4% (317 / 3370)
[C4] Generalizing Multi-Scale Time-Series Modeling with a Single Operator (ICML 2026) (Paper and Code will be added)
Cheonwoo Lee, Dooho Lee, Doyun Choi, Jaemin Yoo
Four papers are currently under review (two as first author)!
π Projects
π Projects
Gardener (Web Service for Home Gardening Community) (21.08 ~ 22. 08)
Pirogramming (Alliance Programming Club for Undergraduate Students)
Full Stack Developer (UI/UX Design, Front / Backend)
Enterprise Project: Automating Health Checkup Image Processing and Database Storage (22.07 ~ 22.09)
Rexsoft
Enhancing Wafer Anomaly Detection and Quality Prediction Using Time-Series Fab Data (24.08 ~ 26.02)
Samsung Electronics
βοΈ Skills
βοΈ Skills
Programming (Python, Matlab, ...)
Presentation Tools (PPT, Figma, ...)Β
English (Fluent)
π Awards & Scholarship
π Awards & Scholarship
Outstanding Admission Scholarship (2018)
Academic Merit Scholarship (All Semester)
2018-2, 2019-1, 2019-2, 2022-1, 2022-2, 2023-1, 2023-2
Outstanding Talent Scholarship in UOS (2022, 2023)
Boeing Scholarship (2022)
Boeing Korea
Academic Excellence Scholarship (2022)
Gwangju Seogu Scholarship Foundation
UOS Deep Learning Summer Bootcamp Competition - Project Director's Award (3rd) (2022)
Woonhae Foundation Scholarship (2023)
SNT Woonhae Foundation
UOS Startup Hackathon Camp Winner (1st) (2023)
UOS Best Participation Award in Extracurricular Education Program (1st) (2023)
π Teaching
π Teaching
[KAIST] - Teaching Assistants
Co-op (Individual Research) (2024-summer)
Foundation of Big Data Analytics (EE412) (2024-fall)
Programming Structure for Electrical Engineering (EE209) (2025-spring)
[SNU] - Teaching Assistants
Introduction to Data Mining (2026-spring)
[External] - Teaching Assistants
AI Application Specialist - Understanding Data Model (Samsung Electronics) (2024 ~ )
Give a Lecture on Recommender SystemsΒ & Time Series Practice
π€ Presentation
π€ Presentation
KSC 2025 (GFM Workshop) (Oral)
2026 SNU AI SUMMIT (Poster)Β
2026 DASFAA DI Workshop (Poster)
πͺ Military (Mandatory Service)
πͺ Military (Mandatory Service)
Auxiliary Police Officer, Hamyang Police Station (20.01~21.07)
Completed Full Term of Service
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