Combining Field Data and Computer Simulations for Calibration and Prediction
SIAM Journal on Scientific Computing
Gaussian processes and limiting linear models
Computational Statistics & Data Analysis
Mechanism-based emulation of dynamic simulation models: Concept and application in hydrology
Computational Statistics & Data Analysis
Cases for the nugget in modeling computer experiments
Statistics and Computing
Journal of Multivariate Analysis
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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.