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The coastal regions of the eastern and southern United States are impacted by severe storm events, leading to significant loss of life and properties. Accurately forecasting storm surge and wind impacts from hurricanes is essential for…

机器学习 · 计算机科学 2026-03-10 Noujoud Nadera , Hadi Majed , Stefanos Giaremis , Rola El Osta , Clint Dawson , Carola Kaiser , Hartmut Kaiser

By means of zoom-in hydrodynamic simulations we quantify the amount of neutral hydrogen (HI) hosted by groups and clusters of galaxies. Our simulations, which are based on an improved formulation of smoothed particle hydrodynamics (SPH),…

Generative models and in particular Generative Adversarial Networks (GANs) have become very popular and powerful data generation tool. In recent years, major progress has been made in extending this concept into the quantum realm. However,…

量子物理 · 物理学 2023-09-19 Wiktor Jurasz , Christian B. Mendl

In this paper, we study a physics-informed algorithm for Wasserstein Generative Adversarial Networks (WGANs) for uncertainty quantification in solutions of partial differential equations. By using groupsort activation functions in…

数值分析 · 数学 2022-08-10 Yihang Gao , Michael K. Ng

Standard Distributional Synthetic Controls (DSC) estimate counterfactual distributions by minimizing the Euclidean $L_2$ distance between quantile functions. We demonstrate that this geometric reliance renders estimators fragile: they lack…

计量经济学 · 经济学 2026-01-27 Xinran Liu

Event simulation for electron neutrino interactions plays a foundational role in precision measurements in particle physics experiments, yet the computational demand of traditional Monte Carlo methods remains a significant challenge,…

高能物理 - 唯象学 · 物理学 2026-04-21 Dipthi S. , Kalyani Desikan

Generative adversarial networks (GANs) have enjoyed much success in learning high-dimensional distributions. Learning objectives approximately minimize an $f$-divergence ($f$-GANs) or an integral probability metric (Wasserstein GANs)…

机器学习 · 计算机科学 2020-06-19 Jiaming Song , Stefano Ermon

Generative Adversarial Networks (GANs) are one of the most practical methods for learning data distributions. A popular GAN formulation is based on the use of Wasserstein distance as a metric between probability distributions.…

机器学习 · 计算机科学 2018-05-23 Maziar Sanjabi , Jimmy Ba , Meisam Razaviyayn , Jason D. Lee

Hydrogen, the most abundant element in the Universe, has traditionally been used to investigate astrophysical processes within and around our own Galaxy. In its chemically neutral, atomic form (known as HI in the astronomical literature),…

宇宙学与河外天体物理 · 物理学 2024-11-14 Hamsa Padmanabhan

The characterisation of the atomic and molecular hydrogen content of high-redshift galaxies is a major observational challenge that will be addressed over the coming years with a new generation of radio telescopes. We investigate this…

宇宙学与河外天体物理 · 物理学 2012-04-13 Alan R. Duffy , Scott T. Kay , Richard A. Battye , C. M. Booth , Claudio Dalla Vecchia , Joop Schaye

Stochastic generators are useful for estimating climate impacts on various sectors. Projecting climate risk in various sectors, e.g. energy systems, requires generators that are accurate (statistical resemblance to ground-truth), reliable…

机器学习 · 计算机科学 2024-10-22 Emmanuel Balogun , Ram Rajagopal , Arun Majumdar

Neutral atomic hydrogen (HI) observations are fundamental to understand the dynamics of galaxies, their assembly, the fuelling of their star formation and environmental interactions. HI studies have so far been limited by the capabilities…

星系天体物理 · 物理学 2024-08-16 F. M. Maccagni , W. J. G. de Blok

This paper reports on WaterGAN, a generative adversarial network (GAN) for generating realistic underwater images from in-air image and depth pairings in an unsupervised pipeline used for color correction of monocular underwater images.…

计算机视觉与模式识别 · 计算机科学 2017-10-27 Jie Li , Katherine A. Skinner , Ryan M. Eustice , Matthew Johnson-Roberson

The presence, distribution and kinematics of atomic neutral hydrogen in the central regions of galaxies can be traced by the HI 21~cm line observed in absorption. Depending only on the strength of the radio continuum, the associated…

星系天体物理 · 物理学 2024-12-11 Raffaella Morganti

Intensity mapping surveys will provide access to a coarse view of the cosmic large-scale structure in unprecedented large volumes at high redshifts. Given the large fractions of the sky that can be efficiently scanned using emission from…

宇宙学与河外天体物理 · 物理学 2019-01-09 Oliver Leicht , Cora Uhlemann , Francisco Villaescusa-Navarro , Sandrine Codis , Lars Hernquist , Shy Genel

In this work we test Wasserstein distance in conjunction with persistent homology, as a tool for discriminating large scale structures of simulated universes with different values of $\sigma_8$ cosmological parameter (present…

宇宙学与河外天体物理 · 物理学 2023-05-11 Maksym Tsizh , Vitalii Tymchyshyn , Franco Vazza

\textsc{Hi} intensity mapping will provide maps of the large-scale distribution of neutral hydrogen (\textsc{Hi}) in the universe. These are prime candidates to be used to constrain primordial non-Gaussianity using the Large Scale Structure…

宇宙学与河外天体物理 · 物理学 2021-12-03 José Fonseca , Michele Liguori

The evolution of neutral hydrogen (HI) across redshifts is a powerful probe of cosmology, large scale structure in the universe and the intergalactic medium. Using a data-driven halo model to describe the distribution of HI in the…

宇宙学与河外天体物理 · 物理学 2018-05-22 Hamsa Padmanabhan

Deep Neural Networks (DNNs) come into the limelight in High Energy Physics (HEP) in order to manipulate the increasing amount of data encountered in the next generation of accelerators. Recently, the HEP community has suggested Generative…

量子物理 · 物理学 2021-01-28 Su Yeon Chang , Sofia Vallecorsa , Elías F. Combarro , Federico Carminati

When researchers develop new econometric methods it is common practice to compare the performance of the new methods to those of existing methods in Monte Carlo studies. The credibility of such Monte Carlo studies is often limited because…

计量经济学 · 经济学 2020-07-23 Susan Athey , Guido Imbens , Jonas Metzger , Evan Munro