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The Cahn--Hilliard equation is one of the most common models to describe phase segregation processes in binary mixtures. In recent times, various dynamic boundary conditions have been introduced to model interactions of the materials with…

偏微分方程分析 · 数学 2021-10-12 Patrik Knopf , Andrea Signori

Degenerate Cahn-Hilliard phase-field models provide a robust approximation of surface-diffusion-driven interface motion without explicit front tracking. In computations, however, the geometric volume enclosed by the interface -- the region…

数值分析 · 数学 2026-02-03 Josef Musil

We investigate a new phase field model for representing non-oriented interfaces, approximating their area and simulating their area-minimizing flow. Our contribution is related to the approach proposed in arXiv:2105.09627 that involves ad…

最优化与控制 · 数学 2025-07-03 Elie Bretin , Antonin Chambolle , Simon Masnou

The Allen-Cahn equation is a fundamental model for phase transitions, offering critical insights into the dynamics of interface evolution in various physical systems. This paper investigates the stability and robustness of frequently…

数值分析 · 数学 2025-04-11 Wenrui Hao , Sun Lee , Xiaofeng Xu , Zhiliang Xu

Clustering is a widely used unsupervised learning technique involving an intensive discrete optimization problem. Associative Memory models or AMs are differentiable neural networks defining a recursive dynamical system, which have been…

机器学习 · 计算机科学 2023-06-07 Bishwajit Saha , Dmitry Krotov , Mohammed J. Zaki , Parikshit Ram

In this paper, we propose a categorical embedding discontinuity-capturing shallow neural network for anisotropic elliptic interface problems. The architecture comprises three hidden layers: a discontinuity-capturing layer, which maps domain…

数值分析 · 数学 2025-09-30 Wei-Fan Hu , Te-Sheng Lin , Yu-Hau Tseng , Ming-Chih Lai

The aim of this article is to study a Cahn-Hilliard model for a multicomponent mixture with cross-diffusion effects, degenerate mobility and where only one of the species does separate from the others. We define a notion of weak solution…

偏微分方程分析 · 数学 2020-07-03 Virginie Ehrlacher , Greta Marino , Jan-Frederik Pietschmann

We propose machine learning methods for solving fully nonlinear partial differential equations (PDEs) with convex Hamiltonian. Our algorithms are conducted in two steps. First the PDE is rewritten in its dual stochastic control…

计算金融 · 定量金融 2022-05-23 William Lefebvre , Grégoire Loeper , Huyên Pham

In this paper, we propose and analyze a linear second-order numerical method for solving the Allen-Cahn equation with a general mobility. The proposed fully-discrete scheme is carefully constructed based on the combination of first and…

数值分析 · 数学 2023-03-03 Dianming Hou , Lili Ju , Zhonghua Qiao

Fast and accurate solutions of time-dependent partial differential equations (PDEs) are of pivotal interest to many research fields, including physics, engineering, and biology. Generally, implicit/semi-implicit schemes are preferred over…

We present a novel spatial discretization for the Cahn-Hilliard equation including transport. The method is given by a mixed discretization for the two elliptic operators, with the phase field and chemical potential discretized in…

数值分析 · 数学 2024-10-18 Golo A. Wimmer , Ben S. Southworth , Qi Tang

Learning the flows of hybrid systems that have both continuous and discrete time dynamics is challenging. The existing method learns the dynamics in each discrete mode, which suffers from the combination of mode switching and…

机器学习 · 计算机科学 2025-12-12 Sangli Teng , Hang Liu , Jingyu Song , Koushil Sreenath

Multi-modal medical image segmentation plays an essential role in clinical diagnosis. It remains challenging as the input modalities are often not well-aligned spatially. Existing learning-based methods mainly consider sharing trainable…

计算机视觉与模式识别 · 计算机科学 2021-01-06 Jingkun Chen , Wenqi Li , Hongwei Li , Jianguo Zhang

The recent advancement in deep learning (DL) for automatic modulation classification (AMC) of wireless signals has encouraged numerous possible applications on resource-constrained edge devices. However, developing optimized DL models…

信号处理 · 电气工程与系统科学 2024-04-25 Nayan Moni Baishya , B. R. Manoj , Prabin K. Bora

We generalize our earlier results concerning meshfree collocation methods for semilinear elliptic second order problems to the quasilinear case. The stability question, however, is treated differently, namely by extending a paper on…

数值分析 · 数学 2018-06-19 Klaus Böhmer , Robert Schaback

We propose a nonlinear acoustic echo cancellation system, which aims to model the echo path from the far-end signal to the near-end microphone in two parts. Inspired by the physical behavior of modern hands-free devices, we first introduce…

声音 · 计算机科学 2021-06-28 Amir Ivry , Israel Cohen , Baruch Berdugo

End-to-end learners for autonomous driving are deep neural networks that predict the instantaneous steering angle directly from images of the ahead-lying street. These learners must provide reliable uncertainty estimates for their…

机器学习 · 统计学 2021-10-05 Clara Hoffmann , Nadja Klein

The Cahn-Hilliard equation is one of the most common models to describe phase separation processes in mixtures of two materials. For a better description of short-range interactions between the material and the boundary, various dynamic…

数值分析 · 数学 2023-01-23 Stefan Metzger

When modeling scientific and industrial problems, geometries are typically modeled by explicit boundary representations obtained from computer-aided design software. Unfitted (also known as embedded or immersed) finite element methods offer…

计算工程、金融与科学 · 计算机科学 2024-05-24 Pere A. Martorell , Santiago Badia

We extend the doubly degenerate Cahn-Hilliard (DDCH) models for isotropic surface diffusion, which yield more accurate approximations than classical degenerate Cahn-Hilliard (DCH) models, to the anisotropic case. We consider both weak and…

数值分析 · 数学 2020-12-17 Marco Salvalaglio , Maximilian Selch , Axel Voigt , Steven M. Wise