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Upcoming 21cm surveys will map the spatial distribution of cosmic neutral hydrogen (HI) over very large cosmological volumes. In order to maximize the scientific return of these surveys, accurate theoretical predictions are needed.…

宇宙学与河外天体物理 · 物理学 2021-07-29 Digvijay Wadekar , Francisco Villaescusa-Navarro , Shirley Ho , Laurence Perreault-Levasseur

In this work, we introduce a novel computational framework that we developed to use numerical simulations to investigate the complexity of brain tissue at a microscopic level with a detail never realised before. Directly inspired by the…

医学物理 · 物理学 2018-06-20 Marco Palombo , Daniel C. Alexander , Hui Zhang

Utilization of classification latent space information for downstream reconstruction and generation is an intriguing and a relatively unexplored area. In general, discriminative representations are rich in class-specific features but are…

The future astronomical imaging surveys are set to provide precise constraints on cosmological parameters, such as dark energy. However, production of synthetic data for these surveys, to test and validate analysis methods, suffers from a…

Recently a type of neural networks called Generative Adversarial Networks (GANs) has been proposed as a solution for fast generation of simulation-like datasets, in an attempt to bypass heavy computations and expensive cosmological…

宇宙学与河外天体物理 · 物理学 2021-07-21 Marion Ullmo , Aurélien Decelle , Nabila Aghanim

Background showers triggered by hadrons represent over 99.9% of all particles arriving at ground-based gamma-ray observatories. An important stage in the data analysis of these observatories, therefore, is the removal of hadron-triggered…

高能天体物理现象 · 物理学 2022-09-21 T. Capistrán , K. L. Fan , J. T. Linnemann , I. Torres , P. M. Saz Parkinson , P. L. H. Yu

Deep learning, a rebranding of deep neural network research works, has achieved a remarkable success in recent years. With multiple hidden layers, deep learning models aim at computing the hierarchical feature representations of the…

神经与进化计算 · 计算机科学 2018-06-06 Jiawei Zhang , Limeng Cui , Fisher B. Gouza

This paper presents a novel generative model to synthesize fluid simulations from a set of reduced parameters. A convolutional neural network is trained on a collection of discrete, parameterizable fluid simulation velocity fields. Due to…

机器学习 · 计算机科学 2019-09-05 Byungsoo Kim , Vinicius C. Azevedo , Nils Thuerey , Theodore Kim , Markus Gross , Barbara Solenthaler

We introduce the \emph{Symplectic Generative Network (SGN)}, a deep generative model that leverages Hamiltonian mechanics to construct an invertible, volume-preserving mapping between a latent space and the data space. By endowing the…

机器学习 · 统计学 2025-10-30 Agnideep Aich , Ashit Aich

In recent years, increasingly complex computational models are being built to describe physical systems which has led to increased use of surrogate models to reduce computational cost. In problems related to Structural Health Monitoring…

机器学习 · 计算机科学 2024-07-08 Nicholas E. Silionis , Theodora Liangou , Konstantinos N. Anyfantis

Several families of continual learning techniques have been proposed to alleviate catastrophic interference in deep neural network training on non-stationary data. However, a comprehensive comparison and analysis of limitations remains…

机器学习 · 计算机科学 2021-12-14 Timm Hess , Martin Mundt , Iuliia Pliushch , Visvanathan Ramesh

One of the most promising ways to observe the Universe is by detecting the 21cm emission from cosmic neutral hydrogen (HI) through radio-telescopes. Those observations can shed light on fundamental astrophysical questions only if accurate…

The paper introduces the Hidden Tree Markov Network (HTN), a neuro-probabilistic hybrid fusing the representation power of generative models for trees with the incremental and discriminative learning capabilities of neural networks. We put…

机器学习 · 计算机科学 2017-11-22 Davide Bacciu

In this work, we present and study Continuous Generative Neural Networks (CGNNs), namely, generative models in the continuous setting: the output of a CGNN belongs to an infinite-dimensional function space. The architecture is inspired by…

机器学习 · 统计学 2025-06-25 Giovanni S. Alberti , Matteo Santacesaria , Silvia Sciutto

The High-Altitude Water Cherenkov Gamma Ray Observatory (HAWC) is designed to perform a synoptic survey of the TeV sky. The high energy coverage of the experiment will enable studies of fundamental physics beyond the Standard Model, and the…

高能天体物理现象 · 物理学 2013-10-02 HAWC Collaboration , A. U. Abeysekara , R. Alfaro , C. Alvarez , J. D. Álvarez , R. Arceo , J. C. Arteaga-Velázquez , H. A. Ayala Solares , A. S. Barber , B. M. Baughman , N. Bautista-Elivar , E. Belmont , S. Y. BenZvi , D. Berley , M. Bonilla Rosales , J. Braun , R. A. Caballero-Lopez , K. S. Caballero-Mora , A. Carramiñana , M. Castillo , U. Cotti , J. Cotzomi , E. de la Fuente , C. De León , T. DeYoung , R. Diaz Hernandez , J. C. Díaz-Vélez , B. L. Dingus , M. A. DuVernois , R. W. Ellsworth , A. Fernandez , D. W. Fiorino , N. Fraija , A. Galindo , F. Garfias , L. X. González , M. M. González , J. A. Goodman , V. Grabski , M. Gussert , Z. Hampel-Arias , C. M. Hui , P. Hüntemeyer , A. Imran , A. Iriarte , P. Karn , D. Kieda , G. J. Kunde , A. Lara , R. J. Lauer , W. H. Lee , D. Lennarz , H. León Vargas , E. C. Linares , J. T. Linnemann , M. Longo , R. Luna-GarcIa , A. Marinelli , H. Martinez , O. Martinez , J. Martínez-Castro , J. A. J. Matthews , P. Miranda-Romagnoli , E. Moreno , M. Mostafá , J. Nava , L. Nellen , M. Newbold , R. Noriega-Papaqui , T. Oceguera-Becerra , B. Patricelli , R. Pelayo , E. G. Pérez-Pérez , J. Pretz , C. Rivière , D. Rosa-González , H. Salazar , F. Salesa , F. E. Sanchez , A. Sandoval , E. Santos , M. Schneider , S. Silich , G. Sinnis , A. J. Smith , K. Sparks , R. W. Springer , I. Taboada , P. A. Toale , K. Tollefson , I. Torres , T. N. Ukwatta , L. Villaseñor , T. Weisgarber , S. Westerhoff , I. G. Wisher , J. Wood , G. B. Yodh , P. W. Younk , D. Zaborov , A. Zepeda , H. Zhou

Next-generation cosmic microwave background (CMB) surveys are expected to provide valuable information about the primordial universe by creating maps of the mass along the line of sight. Traditional tools for creating these lensing…

宇宙学与河外天体物理 · 物理学 2022-05-17 Peikai Li , Ipek Ilayda Onur , Scott Dodelson , Shreyas Chaudhari

Deep generative models have significantly advanced medical imaging analysis by enhancing dataset size and quality. Beyond mere data augmentation, our research in this paper highlights an additional, significant capacity of deep generative…

计算机视觉与模式识别 · 计算机科学 2024-10-18 Xiaodan Xing , Junzhi Ning , Yang Nan , Guang Yang

Generating high-resolution, photo-realistic images has been a long-standing goal in machine learning. Recently, Nguyen et al. (2016) showed one interesting way to synthesize novel images by performing gradient ascent in the latent space of…

计算机视觉与模式识别 · 计算机科学 2017-04-13 Anh Nguyen , Jeff Clune , Yoshua Bengio , Alexey Dosovitskiy , Jason Yosinski

A generative model is developed for deep (multi-layered) convolutional dictionary learning. A novel probabilistic pooling operation is integrated into the deep model, yielding efficient bottom-up (pretraining) and top-down (refinement)…

机器学习 · 统计学 2015-04-17 Yunchen Pu , Xin Yuan , Lawrence Carin

Machine learning in drug discovery has been focused on virtual screening of molecular libraries using discriminative models. Generative models are an entirely different approach that learn to represent and optimize molecules in a continuous…

定量方法 · 定量生物学 2020-11-17 Matthew Ragoza , Tomohide Masuda , David Ryan Koes