Hikaru Ibayashi's Portfolio
Short Bio
Hikaru Ibayashi is a Software Engineer at Google YouTube Ads ML. He was formerly a Research Scientist at Meta (Instagram). He holds a Ph.D. in Computer Science from USC, an M.S. in Computer Science and a B.S. in Physics from the University of Tokyo. His work focuses on the foundations of deep neural networks and physics-informed machine learning.
海外留学を考えている方へ: アメリカの大学院への進学に関して聞きたいことなどあれば、気軽にコーヒーチャットを申し込んでください。
Publications
Allegro-Legato: Scalable, Fast, and Robust Neural-Network Quantum Molecular Dynamics via Sharpness-Aware Minimization.
Hikaru Ibayashi, Taufeq Mohammed Razakh, Liqiu Yang, Thomas Linker, Marco Olguin , Shinnosuke Hattori, Ye Luo, Rajiv K. Kalia, Aiichiro Nakano, Ken-ichi Nomura, and Priya Vashishta. International Supercomputing Conference 2023. [link]Summary: The Allegro-Legato model enhances the robustness of the Allegro model with sharpness aware minimization, offering molecular dynamics simulation that can accommodate longer simulations.
Why does SGD prefer flat minima?: Through the lens of dynamical systems.
Hikaru Ibayashi and Masaaki Imaizumi. When Machine Learning Meets Dynamical Systems: Theory and Applications 2023. [link]Summary: Stochastic gradient descent (SGD) has been shown to escape from sharp minima exponentially fast even before reaching stationary distribution, providing insight into how SGD finds highly generalizable parameters from non-convex target functions, according to a recent study that uses Large Deviation Theory as a fundamental theory in dynamical systems.
Simulating Liquids on Dynamically Warping Grids.
Hikaru Ibayashi, Chris Wojtan, Nils Thuerey, Takeo Igarashi, and Ryoichi Ando. IEEE Transactions on Visualization and Computer Graphics 2018. [link]Summary: Dynamically warping grids for adaptive liquid simulation provides a fast, flexible, and simple approach to combine the advantages of regular and unstructured grids, achieving practical and controllable spatial adaptivity while still taking advantage of existing highly-tuned algorithms.
Essay Comics
Presentations
Writings
For Fun
That's Not a Word!
A pronunciation quiz game. Say the word shown on screen and get brutally honest feedback on your pronunciation.I'm a Magician
I've been practicing magic since high school and have performed at several shows. This video features the "Snap Deal," a card technique created by the legendary Lennart Green.
