Calibration of computer models with multivariate output

  • Authors:
  • Rui Paulo;Gonzalo GarcíA-Donato;JesúS Palomo

  • Affiliations:
  • Department of Mathematics and CEMAPRE, ISEG, Technical University of Lisbon, Portugal;Department of Economics and Finance, Universidad de Castilla-La Mancha, Spain;Department of Business Administration (Finance), Rey Juan Carlos University, Spain

  • Venue:
  • Computational Statistics & Data Analysis
  • Year:
  • 2012

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Abstract

The problem of calibrating computer models that produce multivariate output is considered, with a particular emphasis on the situation where the model is computationally demanding. The proposed methodology builds on Gaussian process-based response-surface approximations to each of the components of the output of the computer model to produce an emulator of the multivariate output. This emulator is then combined in a statistical model involving field observations, which is then used to produce calibration strategies for the parameters of the computer model. The results of applying this methodology to a simulated example and to a real application are presented.