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State-of-the-art weather forecasts usually rely on ensemble prediction systems, accounting for the different sources of uncertainty. As ensembles are typically uncalibrated, they should get statistically postprocessed. Several multivariate…

统计方法学 · 统计学 2016-09-21 Roman Schefzik

Ensemble weather forecasts based on multiple runs of numerical weather prediction models typically show systematic errors and require post-processing to obtain reliable forecasts. Accurately modeling multivariate dependencies is crucial in…

大气与海洋物理 · 物理学 2024-02-02 Jieyu Chen , Tim Janke , Florian Steinke , Sebastian Lerch

Current postprocessing techniques often require separate models for each lead time and disregard possible inter-ensemble relationships by either correcting each member separately or by employing distributional approaches. In this work, we…

Predicting unseen weather phenomena is an important issue for disaster management. In this paper, we suggest a model for a convolutional sequence-to-sequence autoencoder for predicting undiscovered weather situations from previous satellite…

计算机视觉与模式识别 · 计算机科学 2017-12-04 Seungkyun Hong , Seongchan Kim , Minsu Joh , Sa-kwang Song

Variational autoencoders employ an encoding neural network to generate a probabilistic representation of a data set within a low-dimensional space of latent variables followed by a decoding stage that maps the latent variables back to the…

统计力学 · 物理学 2022-04-13 David Yevick

A data-driven framework is proposed towards the end of predictive modeling of complex spatio-temporal dynamics, leveraging nested non-linear manifolds. Three levels of neural networks are used, with the goal of predicting the future state…

计算物理 · 物理学 2020-09-14 Jiayang Xu , Karthik Duraisamy

The continuous representation of spatiotemporal data commonly relies on using abstract data types, such as \textit{moving regions}, to represent entities whose shape and position continuously change over time. Creating this representation…

数据库 · 计算机科学 2023-08-29 Tiago F. R. Ribeiro , Fernando Silva , Rogério Luís de C. Costa

Autoencoders represent an effective approach for computing the underlying factors characterizing datasets of different types. The latent representation of autoencoders have been studied in the context of enabling interpolation between data…

机器学习 · 计算机科学 2020-10-23 Alon Oring , Zohar Yakhini , Yacov Hel-Or

We use spatially-sparse two, three and four dimensional convolutional autoencoder networks to model sparse structures in 2D space, 3D space, and 3+1=4 dimensional space-time. We evaluate the resulting latent spaces by testing their…

计算机视觉与模式识别 · 计算机科学 2018-11-27 Benjamin Graham

Obtaining a sufficient forecast lead time for local precipitation is essential in preventing hazardous weather events. Global warming-induced climate change increases the challenge of accurately predicting severe precipitation events, such…

机器学习 · 计算机科学 2024-02-21 Sojung An , Junha Lee , Jiyeon Jang , Inchae Na , Wooyeon Park , Sujeong You

Weather forecasting centers currently rely on statistical postprocessing methods to minimize forecast error. This improves skill but can lead to predictions that violate physical principles or disregard dependencies between variables, which…

大气与海洋物理 · 物理学 2023-05-23 Francesco Zanetta , Daniele Nerini , Tom Beucler , Mark A. Liniger

We propose an extension of the non-homogeneous Gaussian regression (NGR) model by Gneiting et al. (2005) that yields locally calibrated probabilistic forecasts of tem- perature, based on the output of an ensemble prediction system (EPS).…

应用统计 · 统计学 2014-04-29 Michael Scheuerer , Luca Büermann

Seasonal climate predictions support planning and risk management by offering early information of the most likely-to-occur climate conditions in the coming months, and associated uncertainties. Ensemble forecasts enable this by simulating…

机器学习 · 计算机科学 2026-05-29 Parsa Gooya , Reinel Sospedra-Alfonso

There is an increasing number of real-world problems in computer vision and machine learning requiring to take into consideration multiple interpretation layers (modalities or views) of the world and learn how they relate to each other. For…

计算机视觉与模式识别 · 计算机科学 2024-02-14 Alexandru-Raul Todoran , Marius Leordeanu

A new model is presented for multisite statistical downscaling of temperature and precipitation using convolutional conditional neural processes (convCNPs). ConvCNPs are a recently developed class of models that allow deep learning…

机器学习 · 计算机科学 2021-01-21 Anna Vaughan , Will Tebbutt , J. Scott Hosking , Richard E. Turner

As global warming increases the complexity of weather patterns; the precision of weather forecasting becomes increasingly important. Our study proposes a novel preprocessing method and convolutional autoencoder model developed to improve…

机器学习 · 计算机科学 2024-11-11 Yo-Hwan Choi , Seon-Yu Kang , Minjong Cheon

One of the consequences of climate change is anobserved increase in the frequency of extreme cli-mate events. That poses a challenge for weatherforecast and generation algorithms, which learnfrom historical data but should embed an often…

计算机视觉与模式识别 · 计算机科学 2021-08-03 Dario Augusto Borges Oliveira , Jorge Guevara Diaz , Bianca Zadrozny , Campbell Watson

Learning latent representations of registered meshes is useful for many 3D tasks. Techniques have recently shifted to neural mesh autoencoders. Although they demonstrate higher precision than traditional methods, they remain unable to…

计算机视觉与模式识别 · 计算机科学 2020-10-22 Yi Zhou , Chenglei Wu , Zimo Li , Chen Cao , Yuting Ye , Jason Saragih , Hao Li , Yaser Sheikh

A convolutional autoencoder is trained using a database of airfoil aerodynamic simulations and assessed in terms of overall accuracy and interpretability. The goal is to predict the stall and to investigate the ability of the autoencoder to…

流体动力学 · 物理学 2023-02-22 Ettore Saetta , Renato Tognaccini , Gianluca Iaccarino

Robots act in their environment through sequences of continuous motor commands. Because of the dimensionality of the motor space, as well as the infinite possible combinations of successive motor commands, agents need compact…

机器人学 · 计算机科学 2018-05-17 Michael Garcia Ortiz , Alban Laflaquière