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Two-phase flow phenomena underpin critical technologies such as hydrogen fuel cells, spray cooling, and combustion, where droplet dynamics govern performance and efficiency. Conventional optical diagnostics, including shadowgraphy and…

流体动力学 · 物理学 2025-11-27 Maximilian Dreisbach , Elham Kiyani , Jochen Kriegseis , George Karniadakis , Alexander Stroh

High-dimensional spatio-temporal dynamics can often be encoded in a low-dimensional subspace. Engineering applications for modeling, characterization, design, and control of such large-scale systems often rely on dimensionality reduction to…

机器学习 · 计算机科学 2023-01-05 Shaowu Pan , Steven L. Brunton , J. Nathan Kutz

Accurately predicting fluid dynamics and evolution has been a long-standing challenge in physical sciences. Conventional deep learning methods often rely on the nonlinear modeling capabilities of neural networks to establish mappings…

机器学习 · 计算机科学 2025-04-09 Huaguan Chen , Yang Liu , Hao Sun

We propose Pullback Flow Matching (PFM), a novel framework for generative modeling on data manifolds. Unlike existing methods that assume or learn restrictive closed-form manifold mappings for training Riemannian Flow Matching (RFM) models,…

机器学习 · 计算机科学 2025-07-10 Friso de Kruiff , Erik Bekkers , Ozan Öktem , Carola-Bibiane Schönlieb , Willem Diepeveen

We introduce in this paper new and very effective numerical methods based on neural networks for the approximation of the mean curvature flow of either oriented or non-orientable surfaces. To learn the correct interface evolution law, our…

数值分析 · 数学 2022-09-20 Elie Bretin , Roland Denis , Simon Masnou , Garry Terii

The interaction of neural networks with physical equations offers a wide range of applications. We provide a method which enables a neural network to transform objects subject to given physical constraints. Therefore an U-Net architecture…

人工智能 · 计算机科学 2021-03-22 Lukas Harsch , Johannes Burgbacher , Stefan Riedelbauch

Data-driven models for predicting dynamic responses of linear and nonlinear systems are of great importance due to their wide application from probabilistic analysis to inverse problems such as system identification and damage diagnosis. In…

机器学习 · 计算机科学 2020-12-29 Soheil Sadeghi Eshkevari , Martin Takáč , Shamim N. Pakzad , Majid Jahani

MeanFlow (MF) has recently been established as a framework for one-step generative modeling. However, its ``fastforward'' nature introduces key challenges in both the training objective and the guidance mechanism. First, the original MF's…

计算机视觉与模式识别 · 计算机科学 2026-05-12 Zhengyang Geng , Yiyang Lu , Zongze Wu , Eli Shechtman , J. Zico Kolter , Kaiming He

Streaming adaptations of manifold learning based dimensionality reduction methods, such as Isomap, are based on the assumption that a small initial batch of observations is enough for exact learning of the manifold, while remaining…

机器学习 · 统计学 2020-07-20 Suchismit Mahapatra , Varun Chandola

Reconstructing PDE-governed fields from sparse and irregular measurements is challenging due to their ill-posed nature. Deterministic surrogates are trained on dense fields that struggle with limited measurements and uncertainty…

机器学习 · 计算机科学 2026-05-18 Hao Zhou , Rui Zhang , Han Wan , Hao Sun

Generative flow networks (GFlowNets) are a family of algorithms that learn a generative policy to sample discrete objects $x$ with non-negative reward $R(x)$. Learning objectives guarantee the GFlowNet samples $x$ from the target…

Electric throttle valves represent a challenge for control design, as their dynamics involve strong nonlinearities, characterized by an asymmetric hysteresis. Carrying experiments on multiple valves, a large variability in the…

系统与控制 · 电气工程与系统科学 2023-05-03 Emmanuel Witrant , Ioan DorÉ Landau , Marie-Pierre Vaillant

Flow Matching (FM) is a simulation-free method for learning a continuous and invertible flow to interpolate between two distributions, and in particular to generate data from noise. Inspired by the variational nature of the diffusion…

机器学习 · 统计学 2025-07-14 Chen Xu , Xiuyuan Cheng , Yao Xie

Transformers achieve strong performance across diverse domains but implicitly assume Euclidean geometry in their attention mechanisms, limiting their effectiveness on data with non-Euclidean structure. While recent extensions to hyperbolic…

机器学习 · 计算机科学 2025-10-03 Ryan Y. Lin , Siddhartha Ojha , Nicholas Bai

Robotic manipulation in high-precision tasks is essential for numerous industrial and real-world applications where accuracy and speed are required. Yet current diffusion-based policy learning methods generally suffer from low computational…

机器人学 · 计算机科学 2025-06-23 Sen Wang , Le Wang , Sanping Zhou , Jingyi Tian , Jiayi Li , Haowen Sun , Wei Tang

Many engineered as well as naturally occurring dynamical systems do not have an accurate mathematical model to describe their dynamic behavior. However, in many applications, it is possible to probe the system with external inputs and…

最优化与控制 · 数学 2020-04-24 Vignesh Narayanan , Wei Miao , Jr-Shin Li

In this paper we present a new strategy to model the subgrid-scale scalar flux in a three-dimensional turbulent incompressible flow using physics-informed neural networks (NNs). When trained from direct numerical simulation (DNS) data,…

流体动力学 · 物理学 2021-03-03 Hugo Frezat , Guillaume Balarac , Julien Le Sommer , Ronan Fablet , Redouane Lguensat

Traditional numerical simulation methods require substantial computational resources to accurately determine the complete nonlinear thermoacoustic response of flames to various perturbation frequencies and amplitudes. In this paper, we have…

机器学习 · 计算机科学 2024-09-12 Jiawei Wu , Teng Wang , Jiaqi Nan , Lijun Yang , Jingxuan Li

Modern networks carry increasingly diverse and encrypted traffic types that demand classification techniques beyond traditional port-based and payload-based methods. This tutorial provides a practical, end-to-end guide to building…

网络与互联网体系结构 · 计算机科学 2026-01-08 Adrian Pekar , Richard Plny , Karel Hynek

This work presents, to the best of the authors' knowledge, the first generalizable and fully data-driven adaptive framework designed to stabilize deep learning (DL) autoregressive forecasting models over long time horizons, with the goal of…

流体动力学 · 物理学 2025-05-06 Rodrigo Abadía-Heredia , Manuel Lopez-Martin , Soledad Le Clainche
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