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We propose a physics-constrained convolutional neural network (PC-CNN) to solve two types of inverse problems in partial differential equations (PDEs), which are nonlinear and vary both in space and time. In the first inverse problem, we…

流体动力学 · 物理学 2024-12-03 Daniel Kelshaw , Luca Magri

Graph neural networks (GNNs) have achieved remarkable success in molecular property prediction. However, traditional graph representations struggle to effectively encode the inherent 3D spatial structures of molecules, as molecular…

机器学习 · 计算机科学 2025-07-03 Dian Jin

Recent advances in hardware and big data acquisition have accelerated the development of deep learning techniques. For an extended period of time, increasing the model complexity has led to performance improvements for various tasks.…

Convolutional neural networks or standard CNNs (StdCNNs) are translation-equivariant models that achieve translation invariance when trained on data augmented with sufficient translations. Recent work on equivariant models for a given group…

机器学习 · 计算机科学 2020-06-09 Sandesh Kamath , Amit Deshpande , K V Subrahmanyam

In this paper, we introduce group convolutional neural networks (GCNNs) equivariant to color variation. GCNNs have been designed for a variety of geometric transformations from 2D and 3D rotation groups, to semi-groups such as scale.…

计算机视觉与模式识别 · 计算机科学 2026-04-14 Yulong Yang , Felix O'Mahony , Christine Allen-Blanchette

We consider solving partial differential equations (PDEs) with Fourier neural operators (FNOs), which operate in the frequency domain. Since the laws of physics do not depend on the coordinate system used to describe them, it is desirable…

机器学习 · 计算机科学 2023-07-28 Jacob Helwig , Xuan Zhang , Cong Fu , Jerry Kurtin , Stephan Wojtowytsch , Shuiwang Ji

Recent work in deep learning focuses on solving physical systems in the Ordinary Differential Equation or Partial Differential Equation. This current work proposed a variant of Convolutional Neural Networks (CNNs) that can learn the hidden…

机器学习 · 计算机科学 2021-11-02 Mansura Habiba , Barak A. Pearlmutter

Convolutional Neural Networks with 3D kernels (3D-CNNs) currently achieve state-of-the-art results in video recognition tasks due to their supremacy in extracting spatiotemporal features within video frames. There have been many successful…

计算机视觉与模式识别 · 计算机科学 2021-10-19 Okan Köpüklü , Stefan Hörmann , Fabian Herzog , Hakan Cevikalp , Gerhard Rigoll

Motivated by recent research on Physics-Informed Neural Networks (PINNs), we make the first attempt to introduce the PINNs for numerical simulation of the elliptic Partial Differential Equations (PDEs) on 3D manifolds. PINNs are one of the…

数值分析 · 数学 2021-03-05 Zhuochao Tang , Zhuojia Fu

We present the partial evolutionary tensor neural networks (pETNNs), a novel framework for solving time-dependent partial differential equations with high accuracy and capable of handling high-dimensional problems. Our architecture…

数值分析 · 数学 2025-12-08 Tunan Kao , He Zhang , Lei Zhang , Jin Zhao

Partial Differential Equations are infinite dimensional encoded representations of physical processes. However, imbibing multiple observation data towards a coupled representation presents significant challenges. We present a fully…

机器学习 · 计算机科学 2020-03-09 Gurpreet Singh , Soumyajit Gupta , Matt Lease , Clint N. Dawson

Partial differential equations (PDEs) govern a wide range of physical phenomena, but their numerical solution remains computationally demanding, especially when repeated simulations are required across many parameter settings. Recent…

机器学习 · 计算机科学 2026-05-13 Hamda Hmida , Hsiu-Wen Chang Joly , Youssef Mesri

Normalizing flows are an essential alternative to GANs for generative modelling, which can be optimized directly on the maximum likelihood of the dataset. They also allow computation of the exact latent vector corresponding to an image…

机器学习 · 计算机科学 2021-08-10 Sandeep Nagar , Marius Dufraisse , Girish Varma

Learning and reasoning about 3D molecular structures with varying size is an emerging and important challenge in machine learning and especially in drug discovery. Equivariant Graph Neural Networks (GNNs) can simultaneously leverage the…

机器学习 · 计算机科学 2022-03-03 Tuan Le , Frank Noé , Djork-Arné Clevert

Convolutional networks are successful, but they have recently been outperformed by new neural networks that are equivariant under rotations and translations. These new networks work better because they do not struggle with learning each…

计算机视觉与模式识别 · 计算机科学 2021-02-16 Philip Müller , Vladimir Golkov , Valentina Tomassini , Daniel Cremers

Locally Rotation Invariant (LRI) image analysis was shown to be fundamental in many applications and in particular in medical imaging where local structures of tissues occur at arbitrary rotations. LRI constituted the cornerstone of several…

计算机视觉与模式识别 · 计算机科学 2020-03-20 Vincent Andrearczyk , Julien Fageot , Valentin Oreiller , Xavier Montet , Adrien Depeursinge

This work investigates use of equivariant neural networks as efficient and high-performance frameworks for image reconstruction and denoising in nuclear medicine. Our work aims to tackle limitations of conventional Convolutional Neural…

图像与视频处理 · 电气工程与系统科学 2025-02-03 Amirreza Hashemi , Yuemeng Feng , Arman Rahmim , Hamid Sabet

Partial differential equations (PDEs) play a dominant role in the mathematical modeling of many complex dynamical processes. Solving these PDEs often requires prohibitively high computational costs, especially when multiple evaluations must…

机器学习 · 计算机科学 2022-09-07 Muhammad I. Zafar , Jiequn Han , Xu-Hui Zhou , Heng Xiao

Convolutional neural networks (CNNs) are inherently equivariant to translation. Efforts to embed other forms of equivariance have concentrated solely on rotation. We expand the notion of equivariance in CNNs through the Polar Transformer…

计算机视觉与模式识别 · 计算机科学 2018-02-02 Carlos Esteves , Christine Allen-Blanchette , Xiaowei Zhou , Kostas Daniilidis

Recent research efforts in optical computing have gravitated towards developing optical neural networks that aim to benefit from the processing speed and parallelism of optics/photonics in machine learning applications. Among these…

光学 · 物理学 2020-12-25 Deniz Mengu , Yair Rivenson , Aydogan Ozcan