mvcokm.fit

This function estimates parameters in
 the parallel partial cokriging model

For emulating multifidelity computer models. The major methods include univariate autoregressive cokriging and multivariate autoregressive cokriging. The autoregressive cokriging methods are implemented for both hierarchically nested design and non-nested design. For hierarchically nested design, the model parameters are estimated via standard optimization algorithms; For non-nested design, the model parameters are estimated via Monte Carlo expectation-maximization (MCEM) algorithms. In both cases, the priors are chosen such that the posterior distributions are proper. Notice that the uniform priors on range parameters in the correlation function lead to improper posteriors. This should be avoided when Bayesian analysis is adopted. The development of objective priors for autoregressive cokriging models can be found in Pulong Ma (2020) <DOI:10.1137/19M1289893>. The development of the multivariate autoregressive cokriging models with possibly non-nested design can be found in Pulong Ma, Georgios Karagiannis, Bledar A Konomi, Taylor G Asher, Gabriel R Toro, and Andrew T Cox (2022) <DOI:10.1111/rssc.12558>.

Pulong Ma

ARCokrig

Autoregressive Cokriging Models for Multifidelity Codes

mvcokm.fit function

<dl><dt>obj</dt>
<dd>a <code>mvcokm</code> object construted via the function <code>mvcokm</code> in 
this package</dd></dl>

Arguments

Pulong Ma &lt;mpulong@gmail.com&gt;

Author

fit the autoregressive cokriging model for multivariate output — mvcokm.fit

<dl>

<dt>obj</dt>
<dd>a <code>mvcokm</code> object construted via the function <code>mvcokm</code> in 
this package</dd>

</dl>

mvcokm.fit: fit the autoregressive cokriging model for multivariate output

Description

Usage

Arguments

Author

See Also