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Computer models are widely used across a range of scientific disciplines to describe various complex physical systems, however to perform full uncertainty quantification we often need to employ emulators. An emulator is a fast statistical…

Methodology · Statistics 2022-10-20 Ian Vernon , Jonathan Owen , Jonathan Carter

Theoretical simulation is helpful for accurate interpretation of experimental X-ray absorption near-edge structure (XANES) spectra that contain rich atomic and electronic structure information of materials. However, current simulation…

Materials Science · Physics 2026-01-15 Zichang Lin , Wenjie Chen , Yitao Lin , Xinxin Zhang , Yuegang Zhang

Transcranial ultrasound (TUS) has emerged as a promising tool in clinical and research settings due to its potential to modulate neuronal activity, open the blood-brain barrier, facilitate targeted drug delivery via nanoparticles, and…

Medical Physics · Physics 2024-10-29 Kasra Naftchi-Ardebili , Karanpartap Singh , Gerald R. Popelka , Kim Butts Pauly

N-body simulations are the most powerful method to study the non-linear evolution of large-scale structure. However, they require large amounts of computational resources, making unfeasible their direct adoption in scenarios that require…

Cosmology and Nongalactic Astrophysics · Physics 2023-04-14 Miguel Conceição , Alberto Krone-Martins , Antonio da Silva , Ángeles Moliné

Recent methods for neural surface representation and rendering, for example NeuS, have demonstrated the remarkably high-quality reconstruction of static scenes. However, the training of NeuS takes an extremely long time (8 hours), which…

Computer Vision and Pattern Recognition · Computer Science 2023-11-20 Yiming Wang , Qin Han , Marc Habermann , Kostas Daniilidis , Christian Theobalt , Lingjie Liu

Objective: To enable context-aware computer assistance in the operating room of the future, cognitive systems need to understand automatically which surgical phase is being performed by the medical team. The primary source of information…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Isabel Funke , Dominik Rivoir , Stefanie Krell , Stefanie Speidel

We present an algorithm which is designed to allow the efficient identification and preliminary dynamical analysis of thousands of structures and substructures in large N-body simulations. First we utilise a refined density gradient system…

Astrophysics · Physics 2009-11-10 Jochen Weller , Jeremiah P Ostriker , Paul Bode , Laurie Shaw

Neural networks (NNs) offer a path towards synthesizing and interpreting data on faster timescales than traditional physics-informed computational models. In this work we develop two neural networks relevant to equilibrium and shape control…

Plasma Physics · Physics 2022-07-06 J. T. Wai , M. D. Boyer , E. Kolemen

Single-cell sequencing is revolutionizing biology by enabling detailed investigations of cell-state transitions. Many biological processes unfold along continuous trajectories, yet it remains challenging to extract smooth, low-dimensional…

Machine Learning · Statistics 2025-06-30 Rong Ma , Xi Li , Jingyuan Hu , Bin Yu

We present a neural-network emulator for the thermal and chemical evolution in Population III star formation. The emulator accurately reproduces the thermochemical evolution over a wide density range spanning 21 orders of magnitude…

Astrophysics of Galaxies · Physics 2026-05-18 Sojun Ono , Kazuyuki Sugimura

Neural network-based methods for (un)conditional density estimation have recently gained substantial attention, as various neural density estimators have outperformed classical approaches in real-data experiments. Despite these empirical…

Machine Learning · Statistics 2025-10-02 Dehao Dai , Jianqing Fan , Yihong Gu , Debarghya Mukherjee

We present a physically-motivated topology of a deep neural network that can efficiently infer extensive parameters (such as energy, entropy, or number of particles) of arbitrarily large systems, doing so with O(N) scaling. We use a form of…

Computational Physics · Physics 2019-04-18 Kyle Mills , Kevin Ryczko , Iryna Luchak , Adam Domurad , Chris Beeler , Isaac Tamblyn

As researchers teach robots to perform more and more complex tasks, the need for realistic simulation environments is growing. Existing techniques for closing the reality gap by approximating real-world physics often require extensive real…

Robotics · Computer Science 2020-02-17 Adam Allevato , Elaine Schaertl Short , Mitch Pryor , Andrea L. Thomaz

Ultrasound Strain Elastography (USE) is a powerful non-invasive imaging technique for assessing tissue mechanical properties, offering crucial diagnostic value across diverse clinical applications. However, its clinical application remains…

Computer Vision and Pattern Recognition · Computer Science 2025-11-20 Shourov Joarder , Tushar Talukder Showrav , Md. Kamrul Hasan

Accurate prediction of laminar-turbulent transition is a critical element of computational fluid dynamics simulations for aerodynamic design across multiple flow regimes. Traditional methods of transition prediction cannot be easily…

Fluid Dynamics · Physics 2021-06-17 Muhammad I. Zafar , Meelan M. Choudhari , Pedro Paredes , Heng Xiao

Using unitary (instead of general) matrices in artificial neural networks (ANNs) is a promising way to solve the gradient explosion/vanishing problem, as well as to enable ANNs to learn long-term correlations in the data. This approach…

Machine Learning · Computer Science 2017-04-04 Li Jing , Yichen Shen , Tena Dubček , John Peurifoy , Scott Skirlo , Yann LeCun , Max Tegmark , Marin Soljačić

Herein, we present a deep-learning technique for reconstructing the dark-matter density field from the redshift-space distribution of dark-matter halos. We built a UNet-architecture neural network and trained it using the COmoving…

Cosmology and Nongalactic Astrophysics · Physics 2023-12-21 Zitong Wang , Feng Shi , Xiaohu Yang , Qingyang Li , Yanming Liu , Xiaoping Li

Accurate and efficient simulation-based emulators are essential for interpreting cosmological survey data down to nonlinear scales. Multifidelity emulation techniques reduce simulation costs by combining high- and low-fidelity data, but…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-12 Yanhui Yang , Simeon Bird , Ming-Feng Ho , Mahdi Qezlou

Network simulation is pivotal in network modeling, assisting with tasks ranging from capacity planning to performance estimation. Traditional approaches such as Discrete Event Simulation (DES) face limitations in terms of computational cost…

Networking and Internet Architecture · Computer Science 2026-03-13 Carlos Güemes-Palau , Miquel Ferriol-Galmés , Jordi Paillisse-Vilanova , Albert López-Brescó , Pere Barlet-Ros , Albert Cabellos-Aparicio

Recent advances in Capsule Networks (CapsNets) have shown their superior learning capability, compared to the traditional Convolutional Neural Networks (CNNs). However, the extremely high complexity of CapsNets limits their fast deployment…

Machine Learning · Computer Science 2020-07-03 Alberto Marchisio , Vojtech Mrazek , Muhammad Abudllah Hanif , Muhammad Shafique
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