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A key science goal of upcoming dark energy surveys is to seek time evolution of the dark energy. This problem is one of {\em model selection}, where the aim is to differentiate between cosmological models with different numbers of…

We present a novel approach for training deep neural networks in a Bayesian way. Classical, i.e. non-Bayesian, deep learning has two major drawbacks both originating from the fact that network parameters are considered to be deterministic.…

Machine Learning · Statistics 2019-03-11 Konstantin Posch , Jan Steinbrener , Jürgen Pilz

Deep energy-based models are powerful, but pose challenges for learning and inference (Belanger and McCallum, 2016). Tu and Gimpel (2018) developed an efficient framework for energy-based models by training "inference networks" to…

Computation and Language · Computer Science 2020-10-13 Lifu Tu , Richard Yuanzhe Pang , Kevin Gimpel

In recent years, research on image generation methods has been developing fast. The auto-encoding variational Bayes method (VAEs) was proposed in 2013, which uses variational inference to learn a latent space from the image database and…

Computer Vision and Pattern Recognition · Computer Science 2018-07-12 Guoqiang Zhong , Wei Gao , Yongbin Liu , Youzhao Yang

Auto-encoding generative adversarial networks (GANs) combine the standard GAN algorithm, which discriminates between real and model-generated data, with a reconstruction loss given by an auto-encoder. Such models aim to prevent mode…

Machine Learning · Statistics 2017-10-24 Mihaela Rosca , Balaji Lakshminarayanan , David Warde-Farley , Shakir Mohamed

Deep neural networks achieve remarkable performance in multiple fields. However, after proper training they suffer from an inherent vulnerability against adversarial examples (AEs). In this work we shed light on inner representations of the…

Machine Learning · Computer Science 2022-04-13 Štefan Pócoš , Iveta Bečková , Igor Farkaš

Deep directed generative models have attracted much attention recently due to their generative modeling nature and powerful data representation ability. In this paper, we review different structures of deep directed generative models and…

Machine Learning · Computer Science 2017-10-16 Siqi Nie , Meng Zheng , Qiang Ji

Recent progress in deep learning-based models has improved photo-realistic (or perceptual) single-image super-resolution significantly. However, despite their powerful performance, many methods are difficult to apply to real-world…

Computer Vision and Pattern Recognition · Computer Science 2022-03-16 Namhyuk Ahn , Byungkon Kang , Kyung-Ah Sohn

In all but the most trivial optimization problems, the structure of the solutions exhibit complex interdependencies between the input parameters. Decades of research with stochastic search techniques has shown the benefit of explicitly…

Neural and Evolutionary Computing · Computer Science 2017-03-23 Shumeet Baluja

A deep generative model is developed for representation and analysis of images, based on a hierarchical convolutional dictionary-learning framework. Stochastic {\em unpooling} is employed to link consecutive layers in the model, yielding…

Computer Vision and Pattern Recognition · Computer Science 2015-12-25 Yunchen Pu , Xin Yuan , Andrew Stevens , Chunyuan Li , Lawrence Carin

In the field of pattern recognition research, the method of using deep neural networks based on improved computing hardware recently attracted attention because of their superior accuracy compared to conventional methods. Deep neural…

Computer Vision and Pattern Recognition · Computer Science 2018-09-27 Kyongsik Yun , Alexander Huyen , Thomas Lu

Deep generative models parametrised by neural networks have recently started to provide accurate results in modelling natural images. In particular, generative adversarial networks provide an unsupervised solution to this problem. In this…

High Energy Physics - Experiment · Physics 2018-11-27 Pasquale Musella , Francesco Pandolfi

A simple speed-up cosmology model is proposed to account for the dark energy puzzle. We condense contributions from dark energy and curvature term into one effective parameter in order to reduce parameter degeneracies and to find any…

Astrophysics · Physics 2007-10-10 Xin-He Meng , Meng Su , Zheng Wang

A cosmological model with an energy transfer between dark matter (DM) and dark energy (DE) can give rise to comparable energy densities at the present epoch. The present work deals with the perturbation analysis, parameter estimation and…

Cosmology and Nongalactic Astrophysics · Physics 2021-07-02 Srijita Sinha

We present a novel approach for the search of dark matter in the DarkSide-50 experiment, relying on Bayesian Networks. This method incorporates the detector response model into the likelihood function, explicitly maintaining the connection…

High Energy Physics - Experiment · Physics 2023-04-27 50 Collaboration , P. Agnes , I. F. M. Albuquerque , T. Alexander , A. K. Alton , M. Ave , H. O. Back , G. Batignani , K. Biery , V. Bocci , W. M. Bonivento , B. Bottino , S. Bussino , M. Cadeddu , M. Cadoni , F. Calaprice , A. Caminata , M. D. Campos , N. Canci , M. Caravati , N. Cargioli , M. Cariello , M. Carlini , V. Cataudella , P. Cavalcante , S. Cavuoti , S. Chashin , A. Chepurnov , C. Cicalò , G. Covone , D. D'Angelo , S. Davini , A. De Candia , S. De Cecco , G. De Filippis , G. De Rosa , A. V. Derbin , A. Devoto , M. D'Incecco , C. Dionisi , F. Dordei , M. Downing , D. D'Urso , M. Fairbairn , G. Fiorillo , D. Franco , F. Gabriele , C. Galbiati , C. Ghiano , C. Giganti , G. K. Giovanetti , A. M. Goretti , G. Grilli di Cortona , A. Grobov , M. Gromov , M. Guan , M. Gulino , B. R. Hackett , K. Herner , T. Hessel , B. Hosseini , F. Hubaut , E. V. Hungerford , An. Ianni , V. Ippolito , K. Keeter , C. L. Kendziora , M. Kimura , I. Kochanek , D. Korablev , G. Korga , A. Kubankin , M. Kuss , M. La Commara , M. Lai , X. Li , M. Lissia , G. Longo , O. Lychagina , I. N. Machulin , L. P. Mapelli , S. M. Mari , J. Maricic , A. Messina , R. Milincic , J. Monroe , M. Morrocchi , X. Mougeot , V. N. Muratova , P. Musico , A. O. Nozdrina , A. Oleinik , F. Ortica , L. Pagani , M. Pallavicini , L. Pandola , E. Pantic , E. Paoloni , K. Pelczar , N. Pelliccia , S. Piacentini , A. Pocar , D. M. Poehlmann , S. Pordes , S. S. Poudel , P. Pralavorio , D. D. Price , F. Ragusa , M. Razeti , A. Razeto , A. L. Renshaw , M. Rescigno , J. Rode , A. Romani , D. Sablone , O. Samoylov , E. Sandford , W. Sands , S. Sanfilippo , C. Savarese , B. Schlitzer , D. A. Semenov , A. Shchagin , A. Sheshukov , M. D. Skorokhvatov , O. Smirnov , A. Sotnikov , S. Stracka , Y. Suvorov , R. Tartaglia , G. Testera , A. Tonazzo , E. V. Unzhakov , A. Vishneva , R. B. Vogelaar , M. Wada , H. Wang , Y. Wang , S. Westerdale , M. M. Wojcik , X. Xiao , C. Yang , G. Zuzel

We present a Bayesian machine learning architecture that combines a physically motivated parametrization and an analytic error model for the likelihood with a deep generative model providing a powerful data-driven prior for complex signals.…

Instrumentation and Methods for Astrophysics · Physics 2019-12-10 Francois Lanusse , Peter Melchior , Fred Moolekamp

Deep generative models have achieved impressive success in recent years. Generative Adversarial Networks (GANs) and Variational Autoencoders (VAEs), as emerging families for generative model learning, have largely been considered as two…

Machine Learning · Computer Science 2018-07-12 Zhiting Hu , Zichao Yang , Ruslan Salakhutdinov , Eric P. Xing

A suitable similarity index for comparing learnt neural networks plays an important role in understanding the behaviour of the highly-nonlinear functions, and can provide insights on further theoretical analysis and empirical studies. We…

Machine Learning · Computer Science 2020-03-26 Shuai Tang , Wesley J. Maddox , Charlie Dickens , Tom Diethe , Andreas Damianou

An information theoretic approach inspired by quantum statistical mechanics was recently proposed as a means to optimize network models and to assess their likelihood against synthetic and real-world networks. Importantly, this method does…

Statistical Mechanics · Physics 2018-09-12 Carlo Nicolini , Vladimir Vlasov , Angelo Bifone

Despite continuous improvements, precipitation forecasts are still not as accurate and reliable as those of other meteorological variables. A major contributing factor to this is that several key processes affecting precipitation…

Atmospheric and Oceanic Physics · Physics 2022-11-09 Lucy Harris , Andrew T. T. McRae , Matthew Chantry , Peter D. Dueben , Tim N. Palmer