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Existing contrastive language-image pre-training aims to learn a joint representation by matching abundant image-text pairs. However, the number of image-text pairs in medical datasets is usually orders of magnitude smaller than that in…

计算机视觉与模式识别 · 计算机科学 2024-01-04 Jiarun Liu , Hong-Yu Zhou , Cheng Li , Weijian Huang , Hao Yang , Yong Liang , Shanshan Wang

The underlying physics behind an experimental observation often lacks a simple analytical description. This is especially the case for scanning probe microscopy techniques, where the interaction between the probe and the sample is…

We explore the data-parallel acceleration of physics-informed machine learning (PIML) schemes, with a focus on physics-informed neural networks (PINNs) for multiple graphics processing units (GPUs) architectures. In order to develop…

计算工程、金融与科学 · 计算机科学 2023-08-24 Paul Escapil-Inchauspé , Gonzalo A. Ruz

Reconstructing fields from sparsely observed data is an ill-posed problem that arises in many engineering and science applications. Here, we investigate the use of physics-informed neural networks (PINNs) to reconstruct complete…

流体动力学 · 物理学 2024-10-11 Nagahiro Ohashi , Leslie K. Hwang , Beomjin Kwon

Recently, data-driven simulators based on graph neural networks have gained attention in modeling physical systems on unstructured meshes. However, they struggle with long-range dependencies in fluid flows, particularly in refined mesh…

机器学习 · 计算机科学 2025-04-08 Youn-Yeol Yu , Jeongwhan Choi , Jaehyeon Park , Kookjin Lee , Noseong Park

Particle image velocimetry (PIV) is essential in experimental fluid dynamics. In the current work, we propose a new velocity field estimation paradigm, which achieves a synergetic combination of the deep learning method and the traditional…

流体动力学 · 物理学 2022-01-12 Qi Gao , Hongtao Lin , Han Tu , Haoran Zhu , Runjie Wei , Guoping Zhang , Xueming Shao

We present an open-source MATLAB package, entitled OpenPIV-Matlab, for analyzing particle image velocimetry (PIV) data. We extend the PIV analysis with additional tools for post-processing the PIV results including the estimation of…

流体动力学 · 物理学 2020-07-28 Hadar Ben Gida , Roi Gurka , Alex Liberzon

Measurement of the velocity field in thermal-hydraulic experiments is of great importance for phenomena interpretation and code validation. Direct measurement employing Particle Image Velocimetry (PIV) is challenging in some multiphase…

流体动力学 · 物理学 2025-09-03 Xicheng Wang , YiMeng Chan , KinWing Wong , Dmitry Grishchenko , Pavel Kudinov

The framework of Partial Information Decomposition (PID) unveils complex nonlinear interactions in network systems by dissecting the mutual information (MI) between a target variable and several source variables. While PID measures have…

数据分析、统计与概率 · 物理学 2024-09-23 Chiara Barà , Yuri Antonacci , Marta Iovino , Ivan Lazic , Luca Faes

In response to the prevalent challenge of overfitting in deep neural networks, this paper introduces Simultaneous Learning, a regularization approach drawing on principles of Transfer Learning and Multi-task Learning. We leverage auxiliary…

The power spectrum and voxel intensity distribution (VID) are two summary statistics that can be applied to condense the information encoded in line-intensity maps. The information contained in both summary statistics is highly…

宇宙学与河外天体物理 · 物理学 2024-04-18 Vivian I. Sabla , José Luis Bernal , Gabriela Sato-Polito , Marc Kamionkowski

Multimodal image alignment is the process of finding spatial correspondences between images formed by different imaging techniques or under different conditions, to facilitate heterogeneous data fusion and correlative analysis. The…

计算机视觉与模式识别 · 计算机科学 2022-07-01 Johan Öfverstedt , Joakim Lindblad , Nataša Sladoje

Particle Image Velocimetry (PIV) has become increasingly popular to study structures in turbulent flows. PIV allows direct extraction and investigation of spatial structures in the given flow field. Increasing temporal resolution of PIV…

流体动力学 · 物理学 2021-12-10 Tom T. B. Wester , André Fuchs , Joachim Peinke , Gerd Gülker

Brillouin imaging relies on the reliable extraction of subtle spectral information from hyperspectral datasets. To date, the mainstream practice has been using line fitting of spectral features to retrieve the average peak shift and…

图像与视频处理 · 电气工程与系统科学 2021-04-07 YuChen Xiang , Kai Ling C. Seow , Carl Paterson , Peter Török

A wide variety of feed gases are used to generate low-temperature plasmas for the microelectronics and the sustainability applications. These plasmas often have a complex combination of reactive and non-reactive species which may have…

Protein-ligand interactions (PLIs) are fundamental to biochemical research and their identification is crucial for estimating biophysical and biochemical properties for rational therapeutic design. Currently, experimental characterization…

机器学习 · 统计学 2021-12-01 Carter Knutson , Mridula Bontha , Jenna A. Bilbrey , Neeraj Kumar

In this work, we present a planar laser-induced fluorescence (PLIF) system for two-dimensional (2D) spatial and phase-resolved ion velocity distribution function (IVDF) measurements. A continuous-wave tunable diode laser produces a laser…

等离子体物理 · 物理学 2025-04-04 Sung Hyun Son , Ivan Romadanov , Nirbhav Singh Chopra , Yevgeny Raitses

The existing particle image velocimetry (PIV) do not consider the curvature effect of the non-straight particle trajectory, because it seems to be impossible to obtain the curvature information from a pair of particle images. As a result,…

计算机视觉与模式识别 · 计算机科学 2021-12-08 Yong Lee , Shuang Mei

Deep learning has revolutionized modern society but faces growing energy and latency constraints. Deep physical neural networks (PNNs) are interconnected computing systems that directly exploit analog dynamics for energy-efficient,…

Physics-informed neural networks (PINNs) have recently emerged as a promising alternative for extracting unknown quantities from experimental data. Despite this potential, much of the recent literature has relied on sparse, high-fidelity…

流体动力学 · 物理学 2026-01-09 Christian Toma , Bharathram Ganapathisubramani , Sean Symon