中文
相关论文

相关论文: Machine-Learned HASDM Model with Uncertainty Quant…

200 篇论文

Data assimilation (DA) methods combine model predictions with observational data to improve state estimation in dynamical systems, inspiring their increasingly prominent role in geophysical and climate applications. Classical DA methods…

数值分析 · 数学 2025-10-23 Lizuo Liu , Tongtong Li , Anne Gelb

Based on recent advancements in using machine learning for classical density functional theory for systems with one-dimensional, planar inhomogeneities, we propose a machine learning model for application in two dimensions (2D) akin to…

统计力学 · 物理学 2025-05-22 Felix Glitsch , Jens Weimar , Martin Oettel

We present model independent reconstructions of quintessence and the Swampland conjectures (SC) using both Machine Learning (ML) and cosmography. In particular, we demonstrate how the synergies between theoretical analyses and ML can…

宇宙学与河外天体物理 · 物理学 2021-03-31 Rubén Arjona , Savvas Nesseris

Predictive uncertainty quantification is crucial in decision-making problems. We investigate how to adequately quantify predictive uncertainty with missing covariates. A bottleneck is that missing values induce heteroskedasticity on the…

统计方法学 · 统计学 2024-05-27 Margaux Zaffran , Julie Josse , Yaniv Romano , Aymeric Dieuleveut

Deep learning models frequently make incorrect predictions with high confidence when presented with test examples that are not well represented in their training dataset. We propose a novel and straightforward approach to estimate…

机器学习 · 计算机科学 2019-10-04 Tiago Ramalho , Miguel Miranda

Most of the methods that produce space weather forecasts are based on deterministic models. In order to generate a probabilistic forecast, a model needs to be run several times sampling the input parameter space, in order to generate an…

空间物理 · 物理学 2019-05-01 Enrico Camporeale , Xiangning Chu , Oleksiy Agapitov , Jacob Bortnik

Probabilistic machine learning techniques can learn both complex relations between input features and output quantities of interest as well as take into account stochasticity or uncertainty within a data set. In this initial work, we…

核理论 · 物理学 2020-10-28 A. E. Lovell , A. T. Mohan , P. Talou

Morden deep ensembles technique achieves strong uncertainty estimation performance by going through multiple forward passes with different models. This is at the price of a high storage space and a slow speed in the inference (test) time.…

机器学习 · 计算机科学 2024-03-13 Ha Manh Bui , Anqi Liu

Machine learning methods and uncertainty quantification have been gaining interest throughout the last several years in low-energy nuclear physics. In particular, Gaussian processes and Bayesian Neural Networks have increasingly been…

核理论 · 物理学 2022-07-27 A. E. Lovell , A. T. Mohan , T. M. Sprouse , M. R. Mumpower

This paper studies the Model Selection Confidence Set (MSCS) methodology for univariate time series models involving autoregressive and moving average components, and applies it to study model selection uncertainty in the Italian…

计量经济学 · 经济学 2026-02-19 Piersilvio De Bortoli , Davide Ferrari , Francesco Ravazzolo , Luca Rossini

Machine Learning (ML) has offered innovative perspectives for accelerating the discovery of new functional materials, leveraging the increasing availability of material databases. Despite the promising advances, data-driven methods face…

Density functional theory is the standard theory for computing the electronic structure of materials, which is based on a functional that maps the electron density to the energy. However, a rigorous form of the functional is not known and…

材料科学 · 物理学 2021-12-02 Ryo Nagai , Ryosuke Akashi , Osamu Sugino

Existing point cloud modeling datasets primarily express the modeling precision by pose or trajectory precision rather than the point cloud modeling effect itself. Under this demand, we first independently construct a set of LiDAR system…

计算机视觉与模式识别 · 计算机科学 2023-04-11 Changjie Qiu , Zhiyong Wang , Xiuhong Lin , Yu Zang , Cheng Wang , Weiquan Liu

In this study, a method for predicting unsteady aerodynamic forces under different initial conditions using a limited number of samples based on transfer learning is proposed, aiming to avoid the need for large-scale high-fidelity…

流体动力学 · 物理学 2024-05-27 Wen Ji , Xueyuan Sun , Chunna Li , Xuyi Jia , Gang Wang , Chunlin Gong

We present nonparametric techniques for constructing and verifying density estimates from high-dimensional data whose irregular dependence structure cannot be modelled by parametric multivariate distributions. A low-dimensional…

应用统计 · 统计学 2009-07-02 Susan M. Buchman , Ann B. Lee , Chad M. Schafer

Data-driven forecasts of air quality have recently achieved more accurate short-term predictions. Despite their success, most of the current data-driven solutions lack proper quantifications of model uncertainty that communicate how much to…

机器学习 · 计算机科学 2021-12-07 Abdulmajid Murad , Frank Alexander Kraemer , Kerstin Bach , Gavin Taylor

Numerical modeling of different structural materials that have highly nonlinear behaviors has always been a challenging problem in engineering disciplines. Experimental data is commonly used to characterize this behavior. This study aims to…

机器学习 · 计算机科学 2020-07-28 Elif Ecem Bas , Denis Aslangil , Mohamed A. Moustafa

In this second part of our two-part paper, we provide a detailed, frequentist framework for propagating uncertainties within our multivariate linear least squares model. This permits us to quantify the impact of uncertainties in…

应用统计 · 统计学 2019-08-09 Pranay Seshadri , Andrew Duncan , Duncan Simpson , George Thorne , Geoffrey Parks

To make best use of multi-faceted astronomical and nuclear data-sets, probability distributions of neutron star models that can be used to propagate errors consistently from one domain to another are required. We take steps toward a…

高能天体物理现象 · 物理学 2021-09-22 Lauren Balliet , William Newton , Sarah Cantu , Srdan Budimir

We investigate the possibility of measuring the Hubble constant, the fractional energy density components and the equation of state parameter of the ``dark energy'' using lensed multiple images of high-redshift supernovae. With future…

天体物理学 · 物理学 2009-11-07 A. Goobar , E. Mortsell , R. Amanullah , P. Nugent