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Stabilization of parameter estimation for Kriging-based approximation with empirical semivariogram

机译:基于经验半变异函数的基于Kriging近似的参数估计的稳定

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摘要

This paper discusses stabilization of an optimization procedure to determine an appropriate semivariogram parameter using the empirical semivariogram for Kriging-based approximation. From a viewpoint of a computational cost for constructing a surrogate model, a semivariogram fitting approach using the empirical semivariogram can be usable for the parameter estimation of a semivariogram function. However, instability of the optimization procedure for determination of the semivariogram parameter may be observed in some cases and it causes to generate an invalid surrogate model.rnFor this problem, a simple technique for stabilization of the optimization for the parameter determination is proposed in this paper. The proposed approach employs a normalization technique of input data with respect to values of variables and an objective function. The proposed method is applied to some numerical examples, and the numerical results illustrate validity and effectiveness of the proposed method.
机译:本文讨论了使用经验半变异函数进行基于Kriging逼近的优化过程的稳定性,以确定适当的半变异函数参数。从构建替代模型的计算成本的角度来看,使用经验半变异函数的半变异函数拟合方法可用于半变异函数的参数估计。但是,在某些情况下,可能会发现确定半变异函数参数的优化过程不稳定,并导致生成无效的替代模型。针对此问题,本文提出了一种简单的稳定参数确定优化的技术。 。所提出的方法采用关于变量和目标函数的值的输入数据的归一化技术。将该方法应用于一些数值例子,数值结果说明了该方法的有效性和有效性。

著录项

  • 来源
    《Computer Methods in Applied Mechanics and Engineering》 |2010年第28期|p.1710-1721|共12页
  • 作者

    S. Sakata; F. Ashida; H. Tanaka;

  • 作者单位

    Department of Electronic Control Systems Engineering, Interdisciplinary Faculty of Science and Engineering, Shimane University, 1060, Nishikawatsu-cho, Matsue City, 690-8504, Japan;

    rnDepartment of Electronic Control Systems Engineering, Interdisciplinary Faculty of Science and Engineering, Shimane University, 1060, Nishikawatsu-cho, Matsue City, 690-8504, Japan;

    rnGraduate School of Science and Engineering, Shimane University, 1060, Nishikawatsu-cho, Matsue City, 690-8504, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    kriging method; semivariogram parameter estimation; empirical semivariogram; stabilization; optimization;

    机译:克里格法半变异函数参数估计;经验半变异函数稳定优化;

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