河Ha 俊 Jun 秀Soo

Hi, I'm an independent researcher working on (non-cooperative) games and deep learning. I received my Master's degree at Seoul National University, and I was fortunate to be advised by Gunhee Kim. I worked for a private quant fund in the last few years, and now I'm back to academia. My interest lies in theoretical deep learning, game theory, and their intersection. Simply put, I study how and when multiple neural networks would converge to their (local) equilibrium. (Résumé →)

NEWS: I'm looking for a Ph.D. opportunity for Fall 2027 (Research Pitch →)

Education

• M.S. in Artificial Intelligence, Seoul National University (Sep 2020 - Aug 2023)
• B.S. in Software, Hanyang University (Mar 2013 - Aug 2020, Graduated with high distinction)
• B.S. in Mathematics, Hanyang University (Aug 2014 - Aug 2020)

Publications

• High-Probability Convergence Guarantees of Stochastic Gradient Descent Ascent in Structured Nonconvex Min-Max Games
  Junsoo Ha.
  Conference on Learning Theory (COLT), 2026. [PDF]


• On Convergence of Lookahead in Smooth Games
  Junsoo Ha, Gunhee Kim.
  International Conference on Artificial Intelligence and Statistics (AISTATS), 2022. [PDF]


• A Neural Dicihlet Process Mixture Model for Task-Free Continual Learning
  Soochan Lee, Junsoo Ha, Dongsu Zhang, Gunhee Kim.
  International Conference on Learning Representations (ICLR), 2020. [PDF] [Code]


• Harmonizing Maximum Likelihood with GANs for Multimodal Conditional Generation Soochan Lee, Junsoo Ha, Gunhee Kim.
  International Conference on Learning Representations (ICLR), 2019. [PDF] [Code]

Professional Experience

I used to be a software engineer back before my academic career, and it has grown my appreciation of UNIX philosophy, single responsibility and minimal side-effects. As a researcher, my daily mantra follows The Bitter Lesson and The Zen of Python.

• Unknot (Seoul, Korea. Sep 2021 - Aug 2024) / Quantitatiev Research Scientist
• Buzzni (Seoul, Korea. Mar 2017 - July 2017) / Backend Software Engineer
• Geopia (Seoul, Korea. Apr 2015 - Feb 2017) / Full-Stack Software Engineer
• Nexol System (Seoul, Korea. Jan 2015 - Mar 2015) / Software Engineering Intern
• LG Electronics (Seoul, Korea. Jul 2014 - Aug 2014) / Software Engineering Intern

Profiles

• Google Scholar (@kuc2477)
• Semantic Scholar (@kuc2477)
• GitHub (@kuc2477)
• Linkedin (@kuc2477)
• Facebook (@하준수)