no code implementations • 8 Dec 2024 • Namgyu Kang, Jaemin Oh, Youngjoon Hong, Eunbyung Park
The approximation of Partial Differential Equations (PDEs) using neural networks has seen significant advancements through Physics-Informed Neural Networks (PINNs).
no code implementations • 2 Dec 2024 • Myeong-Su Lee, Jaemin Oh, Dong-Chan Lee, Kangwook Lee, Sooncheol Park, Youngjoon Hong
In this work, we address the challenges posed by the high nonlinearity of the Butler-Volmer (BV) equation in forward and inverse simulations of the pseudo-two-dimensional (P2D) model using the physics-informed neural network (PINN) framework.
1 code implementation • 1 Nov 2024 • Dogyun Park, Sojin Lee, Sihyeon Kim, Taehoon Lee, Youngjoon Hong, Hyunwoo J. Kim
Moreover, we propose two techniques to further improve estimation accuracy: initial velocity conditioning for the acceleration model and a reflow process for the initial velocity.
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no code implementations • 9 Oct 2024 • Mingu Kang, Dongseok Lee, Woojin Cho, Jaehyeon Park, Kookjin Lee, Anthony Gruber, Youngjoon Hong, Noseong Park
Large language models (LLMs), like ChatGPT, have shown that even trained with noisy prior data, they can generalize effectively to new tasks through in-context learning (ICL) and pre-training techniques.
1 code implementation • 27 Apr 2024 • Youngjoon Hong, Seungchan Ko, Jaeyong Lee
In this paper, we provide a theoretical analysis of a type of operator learning method without data reliance based on the classical finite element approximation, which is called the finite element operator network (FEONet).
1 code implementation • 10 Mar 2024 • Jaemin Oh, Seung Yeon Cho, Seok-Bae Yun, Eunbyung Park, Youngjoon Hong
In this study, we introduce a method based on Separable Physics-Informed Neural Networks (SPINNs) for effectively solving the BGK model of the Boltzmann equation.
no code implementations • 3 Oct 2023 • JunHo Choi, Taehyun Yun, Namjung Kim, Youngjoon Hong
In this paper, we introduce the Spectral Coefficient Learning via Operator Network (SCLON), a novel operator learning-based approach for solving parametric partial differential equations (PDEs) without the need for data harnessing.
1 code implementation • 13 Sep 2023 • Sanghyeon Kim, Hyunmo Yang, Younghyun Kim, Youngjoon Hong, Eunbyung Park
The recent surge in large-scale foundation models has spurred the development of efficient methods for adapting these models to various downstream tasks.
1 code implementation • 9 Aug 2023 • Jae Yong Lee, Seungchan Ko, Youngjoon Hong
Partial differential equations (PDEs) underlie our understanding and prediction of natural phenomena across numerous fields, including physics, engineering, and finance.
no code implementations • 20 Jul 2023 • Soohan Kim, Jimyeong Kim, Hong Kee Sul, Youngjoon Hong
The purpose of this research is to devise a tactic that can closely track the daily cumulative volume-weighted average price (VWAP) using reinforcement learning.
1 code implementation • NeurIPS 2023 • Junwoo Cho, Seungtae Nam, Hyunmo Yang, Seok-Bae Yun, Youngjoon Hong, Eunbyung Park
Furthermore, we present that SPINN can solve a chaotic (2+1)-d Navier-Stokes equation significantly faster than the best-performing prior method (9 minutes vs 10 hours in a single GPU), maintaining accuracy.
1 code implementation • 16 Nov 2022 • Junwoo Cho, Seungtae Nam, Hyunmo Yang, Seok-Bae Yun, Youngjoon Hong, Eunbyung Park
SPINN operates on a per-axis basis instead of point-wise processing in conventional PINNs, decreasing the number of network forward passes.
no code implementations • 16 Nov 2022 • Seungchan Ko, Seok-Bae Yun, Youngjoon Hong
In this paper, we perform the convergence analysis of unsupervised Legendre--Galerkin neural networks (ULGNet), a deep-learning-based numerical method for solving partial differential equations (PDEs).
1 code implementation • 15 Oct 2022 • Byeongkeun Ahn, Chiyoon Kim, Youngjoon Hong, Hyunwoo J. Kim
Normalizing flows model probability distributions by learning invertible transformations that transfer a simple distribution into complex distributions.
1 code implementation • 22 Sep 2022 • Soohan Kim, Seok-Bae Yun, Hyeong-Ohk Bae, Muhyun Lee, Youngjoon Hong
The Black-Scholes option pricing model is one of the most widely used models by market participants.
no code implementations • 19 Aug 2022 • Gung-Min Gie, Youngjoon Hong, Chang-Yeol Jung
We propose a new semi-analytic physics informed neural network (PINN) to solve singularly perturbed boundary value problems.
2 code implementations • 26 Jul 2022 • Namgyu Kang, Byeonghyeon Lee, Youngjoon Hong, Seok-Bae Yun, Eunbyung Park
With the increases in computational power and advances in machine learning, data-driven learning-based methods have gained significant attention in solving PDEs.
no code implementations • 21 Jul 2022 • JunHo Choi, Namjung Kim, Youngjoon Hong
Machine learning methods have been lately used to solve partial differential equations (PDEs) and dynamical systems.
no code implementations • 24 Oct 2020 • Bryce Chudomelka, Youngjoon Hong, Hyunwoo Kim, Jinyoung Park
Nonlinear differential equations are challenging to solve numerically and are important to understanding the dynamics of many physical systems.
1 code implementation • ECCV 2020 • Byungjoo Kim, Bryce Chudomelka, Jinyoung Park, Jaewoo Kang, Youngjoon Hong, Hyunwoo J. Kim
Motivated by the SSP property and a generalized Runge-Kutta method, we propose Strong Stability Preserving networks (SSP networks) which improve robustness against adversarial attacks.
no code implementations • 12 Jul 2020 • Youngjoon Hong, Bongsuk Kwon, Byung-Jun Yoon
We consider the optimal experimental design problem for an uncertain Kuramoto model, which consists of N interacting oscillators described by coupled ordinary differential equations.