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Parameter estimation, which represents a classical inverse problem, is often ill-posed as different parameter combinations can yield identical outputs. This non-uniqueness poses a critical barrier to accurate and unique identification. This…

Variable density flows occur in a variety of different systems with a wide range of scales, from astrophysics to atmospheric flows to inertial confinement fusion or reacting flows. Given the inherent limitations of RANS simulations, it is…

流体动力学 · 物理学 2020-01-01 Jan Felix Heyse , Zhu Huang , Gianluca Iaccarino

This paper considers distribution systems with a high penetration of distributed, renewable generation and addresses the problem of incorporating the associated uncertainty into the optimal operation of these networks. Joint chance…

最优化与控制 · 数学 2019-03-07 Kyri Baker , Andrey Bernstein

Machine learning enables rapid estimation of material parameters in solar cells via neural-network-based surrogate models. However, the reliability of extracted parameters depends on underlying assumptions such as the choice of…

材料科学 · 物理学 2026-02-11 Eunchi Kim , Thomas Kirchartz

Although uncertainty quantification has been making its way into nuclear theory, these methods have yet to be explored in the context of reaction theory. For example, it is well known that different parameterizations of the optical…

核理论 · 物理学 2017-03-01 A. E. Lovell , F. M. Nunes , J. Sarich , S. M. Wild

Real-Time Auction (RTA) Interception aims to filter out invalid or irrelevant traffic to enhance the integrity and reliability of downstream data. However, two key challenges remain: (i) the need for accurate estimation of traffic quality…

机器学习 · 计算机科学 2026-05-04 Gaoxiang Zhao , Ruinan Qiu , Pengpeng Zhao , Rongjin Wang , Xiaoting Wang , Zhangang Lin , Xiaoqiang Wang

Transformers are essential components for the reliable operation of power grids. The transformer core is constituted by a ferromagnetic material, and accordingly, depending on the magnetization state, the energization of the transformer can…

系统与控制 · 电气工程与系统科学 2025-03-31 Jone Ugarte Valdivielso , Jose I. Aizpurua , Manex Barrenetxea , Brian G. Stewart

Estimating parameters from data is a fundamental problem, customarily done by minimizing a loss function between a model and observed statistics. In scattering-based analysis, researchers often employ their domain expertise to select a…

计算物理 · 物理学 2024-09-05 Mengyang Gu , Yue He , Xubo Liu , Yimin Luo

The increasing integration of intermittent renewable generation, especially at the distribution level,necessitates advanced planning and optimisation methodologies contingent on the knowledge of thegrid, specifically the admittance matrix…

系统与控制 · 电气工程与系统科学 2021-12-21 Jean-Sébastien Brouillon , Emanuele Fabbiani , Pulkit Nahata , Keith Moffat , Florian Dörfler , Giancarlo Ferrari-Trecate

The increasing renewable penetration introduces significant uncertainty in power system operations. At the same time, the existing transmission grid is often already congested, and urgently needed reinforcements are frequently delayed due…

系统与控制 · 电气工程与系统科学 2025-09-18 Giacomo Bastianel , Dirk Van Hertem , Hakan Ergun , Line Roald

We introduce a new method for the estimation of the angular parameters [i.e., central directions of arrival (DOAs) and angular spreads] of multiple non-circular and incoherently-distributed (ID) sources and thoroughly analyze its…

信号处理 · 电气工程与系统科学 2019-01-07 Sonia Ben Hassen , Faouzi Bellili , Abdelaziz Samet , Sofiène Affes

The use of high-dimensional regression techniques from machine learning has significantly improved the quantitative accuracy of interatomic potentials. Atomic simulations can now plausibly target quantitative predictions in a variety of…

材料科学 · 物理学 2025-03-04 Danny Perez , Aparna P. A. Subramanyam , Ivan Maliyov , Thomas D. Swinburne

In a grid with a significant share of renewable generation, operators will need additional tools to evaluate the operational risk due to the increased volatility in load and generation. The computational requirements of the forward…

系统与控制 · 电气工程与系统科学 2022-09-27 Oliver Stover , Pranav Karve , Sankaran Mahadevan , Wenbo Chen , Haoruo Zhao , Mathieu Tanneau , Pascal Van Hentenryck

Uncertainty quantification in Artificial Intelligence (AI)-based predictions of material properties is of immense importance for the success and reliability of AI applications in material science. While confidence intervals are commonly…

机器学习 · 计算机科学 2023-01-16 Francesca Tavazza , Brian De Cost , Kamal Choudhary

In probability density function (PDF) methods of turbulent flows, the joint PDF of several flow variables is computed by numerically integrating a system of stochastic differential equations for Lagrangian particles. A mathematically exact…

流体动力学 · 物理学 2010-06-17 J. Bakosi

We present a novel method for generating sequential parameter estimates and quantifying epistemic uncertainty in dynamical systems within a data-consistent (DC) framework. The DC framework differs from traditional Bayesian approaches due to…

统计方法学 · 统计学 2024-05-15 Carlos del-Castillo-Negrete , Rylan Spence , Troy Butler , Clint Dawson

We critically assess the robustness of uncertainties on parton distribution functions (PDFs) determined using neural networks from global sets of experimental data collected from multiple experiments. We view the determination of PDFs as an…

高能物理 - 唯象学 · 物理学 2025-03-25 Andrea Barontini , Mark N. Costantini , Giovanni De Crescenzo , Stefano Forte , Maria Ubiali

We investigate the switching current distributions of ferromagnetic anomalous Josephson junctions subjected to a linearly increasing bias current. Our study uncovers a significant correlation between the position of the switching current…

超导电性 · 物理学 2023-10-12 Claudio Guarcello , F. Sebastián Bergeret , Roberta Citro

Machine learning is becoming increasingly important for nonlinear system identification, including dynamical systems with spatially distributed outputs. However, classical identification and forecasting approaches become markedly less…

系统与控制 · 电气工程与系统科学 2026-04-21 Achraf El Messaoudi , Noureddine Khaous , Karim Cherifi

This report serves as a technology description of a Julia-based re-implementation of the fixed-point current injection algorithm, available in PowerModelsDistribution.jl [1]. This report does not describe a novel method for solving…

最优化与控制 · 数学 2023-05-09 Frederik Geth , Sander Claeys , Rahmat Heidari
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