Results 21 to 30 of about 73,328 (265)

Bayesian optimization of ESG (Environmental Social Governance) financial investments

open access: yesEnvironmental Research Communications, 2023
Financial experts seek to predict the variability of financial markets to ensure investors’ successful investments. However, there has been a big trend in finance in the last few years, which are the ESG (Economic, Social and Governance) criteria, due to
Eduardo C Garrido-Merchán   +2 more
doaj   +1 more source

An approximate high-dimensional optimization method using hierarchical design space reduction strategy

open access: yesXibei Gongye Daxue Xuebao, 2021
To overcome the complicated engineering model and huge computational cost, a hierarchical design space reduction strategy based approximate high-dimensional optimization(HSRAHO) method is proposed to deal with the high-dimensional expensive black-box ...

doaj   +1 more source

Black-box optimization methods for hypersonic flow problems [PDF]

open access: yesInternational Journal of Fluid Engineering
This review examines the application of black-box optimization methods to hypersonic flow problems, with a particular emphasis on scenarios where computational fluid dynamics (CFD) simulations function as opaque, nontransparent models.
Davood Hoseinzade   +2 more
doaj   +1 more source

Framework for Embedding Process Simulator in GAMS via Kriging Surrogate Model Applied to C3MR Natural Gas Liquefaction Optimization

open access: yesChemical Engineering Transactions, 2021
Rigorous black-box simulations are useful to describe complex systems. However, it cannot be directly integrated into mathematical programming models in some algebraic modeling environments because of the lack of symbolic formulation.
Lucas F. Santos   +3 more
doaj   +1 more source

Black Box Optimization Benchmarking of the GLOBAL Method [PDF]

open access: yesEvolutionary Computation, 2012
GLOBAL is a multi-start type stochastic method for bound constrained global optimization problems. Its goal is to find the best local minima that are potentially global. For this reason it involves a combination of sampling, clustering, and local search.
László Pál   +3 more
openaire   +3 more sources

Attacking Black-Box Image Classifiers With Particle Swarm Optimization

open access: yesIEEE Access, 2019
In order to better solve the shortcomings of Deep Neural Networks (DNNs) susceptible to adversarial examples, evaluating existing neural network classification performance and increasing training sets to improve the robustness of classification models ...
Quanxin Zhang   +3 more
doaj   +1 more source

Surrogate‐based methods for black‐box optimization [PDF]

open access: yesInternational Transactions in Operational Research, 2016
AbstractIn this paper, we survey methods that are currently used in black‐box optimization, that is, the kind of problems whose objective functions are very expensive to evaluate and no analytical or derivative information is available. We concentrate on a particular family of methods, in which surrogate (or meta) models are iteratively constructed and
Ky Khac Vu   +3 more
openaire   +2 more sources

Opening the black boxes in data flow optimization [PDF]

open access: yesProceedings of the VLDB Endowment, 2012
Many systems for big data analytics employ a data flow abstraction to define parallel data processing tasks. In this setting, custom operations expressed as user-defined functions are very common. We address the problem of performing data flow optimization at this level of abstraction, where the semantics of operators are not known.
Fabian Hueske   +6 more
openaire   +2 more sources

Fully autonomous materials screening methodology combining first-principles calculations, machine learning and high-performance computing system

open access: yesScience and Technology of Advanced Materials: Methods, 2023
Materials screening by high-throughput first-principles calculations is a powerful tool for exploring novel materials with preferable properties. Machine learning techniques are expected to accelerate materials screening by constructing surrogate models ...
Akira Takahashi   +4 more
doaj   +1 more source

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