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Sensitivity Approach of Sequential Sampling for Kriging Model

민감도법을 이용한 크리깅모델의 순차적 실험계획

  • 이태희 (한양대학교 기계공학부) ;
  • 정재준 (한양대학교 대학원 기계설계학과) ;
  • 황인교 (한양대학교 대학원 기계설계학과) ;
  • 이창섭 (한양대학교 대학원 기계설계학과)
  • Published : 2004.11.01

Abstract

Sequential sampling approaches of a metamodel that sampling points are updated sequentially become a significant consideration in metamodeling technique. Sequential sampling design is more effective than classical space filling design of all-at-once sampling because sequential sampling design is to add new sampling points by means of distance between sampling points or precdiction error obtained from metamodel. However, though the extremum points can strongly reflect the behaviors of responses, the existing sequential sampling designs are inefficient to approximate extremum points of original model. In this research, new sequential sampling approach using the sensitivity of Kriging model is proposed, so that new approach reflects the behaviors of response sequentially. Various sequential sampling designs are reviewed and the performances of the proposed approach are compared with those of existing sequential sampling approaches by using mean squared error. The accuracy of the proposed approach is investigated against optimization results of test problems so that superiority of the sensitivity approach is verified.

Keywords

Kriging Model;Sequential Sampling;Sensitivity Approach of Sequential Sampling

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