Results 11 to 20 of about 13,817,849 (263)

Fusing Direct and Indirect Measurements Through Multi-Fidelity Learning For Accelerated Electrocaloric Materials Discovery. [PDF]

open access: yesAdv Sci (Weinh)
A multi‐fidelity framework integrates sparse direct and abundant indirect electrocaloric measurements. Multi‐objective active learning accelerates BaTiO3‐based electrocaloric materials discovery at –70∘C$^{\circ }{\rm C}$. A diffuse transition enables an electrocaloric strength of 0.06×$\times$10−6 Km/V at –70℃ with an operational temperature span of ...
Wang B   +8 more
europepmc   +2 more sources

Two-stage aerodynamic optimization method based on early termination of CFD convergence and variable-fidelity model

open access: yesXibei Gongye Daxue Xuebao, 2021
Efficient aerodynamic design optimization method is of great value for improving the aerodynamic performance of little UAV's airfoil. Using engineering or semi-engineering estimation method to analyze aerodynamic forces in solving aerodynamic ...

doaj   +1 more source

An optimization method for material sound absorption performance based on surrogate model

open access: yesActa Acustica, 2022
In some complex engineering design problems, the use of numerical simulation methods to solve the target value often consumes several hours or even longer, which limits the real-time response to the model.
Song Hao   +3 more
doaj   +1 more source

Kriging Model for Time-Dependent Reliability: Accuracy Measure and Efficient Time-Dependent Reliability Analysis Method

open access: yesIEEE Access, 2020
As the performance function of a mechanical structure is usually based on time-consuming computer codes, predicting time-dependent reliability analysis requires a large number of costly simulations in engineering.
Yutao Yan   +3 more
doaj   +1 more source

Kriging Model with Fractional Euclidean Distance Matrices [PDF]

open access: yesInformatica, 2019
Summary: The multidimensional data model for kriging is developed using fractional Euclidean distance matrices (FEDM). The properties of FEDM are studied by means of the kernel matrix mehod. It has been shown that the factorization of kernel matrix enables us to create the embedded set being a nonsingular simplex.
Pozniak, Natalija   +2 more
openaire   +4 more sources

Ultimate strength reliability analysis of ship plates based on improved AK-MCS method

open access: yesZhongguo Jianchuan Yanjiu, 2020
[Objectives] In view of the frequent occurrence of marine accidents caused by low ultimate bearing capacity of ships. To this end, the improved AK-MCS method is proposed for the research of the ultimate strength reliability of ship structures.[Methods ...
LUO Wenjun, WANG Deyu
doaj   +1 more source

An Improved High-Dimensional Kriging Surrogate Modeling Method through Principal Component Dimension Reduction

open access: yesMathematics, 2021
The Kriging surrogate model in complex simulation problems uses as few expensive objectives as possible to establish a global or local approximate interpolation.
Yaohui Li   +5 more
doaj   +1 more source

Exploration versus Exploitation Using Kriging Surrogate Modelling in Electromagnetic Design [PDF]

open access: yes, 2011
This paper discusses the use of kriging surrogate modelling in multiobjective design optimisation in electromagnetics. The importance of achieving appropriate balance between exploration and exploitation is emphasised when searching for the global ...
Rotaru, M.   +3 more
core   +2 more sources

Statistical Tests for Cross-Validation of Kriging Models [PDF]

open access: yesSSRN Electronic Journal, 2019
Kriging or Gaussian process models are popular metamodels (surrogate models or emulators) of simulation models; these metamodels give predictors for input combinations that are not simulated. To validate these metamodels for computationally expensive simulation models, the analysts often apply computationally efficient cross-validation. In this paper,
Jack P. C. Kleijnen, Wim C. M. van Beers
openaire   +2 more sources

Selection of additive elements for lead-free solders by use of a Kriging-based method for efficiently searching materials

open access: yesNihon Kikai Gakkai ronbunshu, 2015
A Kriging-based method for efficiently searching materials was used to select additive elements in lead-free solders that are effective for suppressing the grain-boundary diffusion, which is the cause of smaller breaking elongation than lead-contained ...
Norihiko NONAKA   +4 more
doaj   +1 more source

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