R: Concentrated log-Likelihood of a km object - Analytical...
logLikGrad
R Documentation
Concentrated log-Likelihood of a km object - Analytical gradient
Description
Returns the exact gradient vector of the concentrated log-likelihood.
Usage
logLikGrad(param, model, envir)
Arguments
param
a vector containing the optimization variables.
model
an object of class km.
envir
an environment specifying where to get intermediate values calculated in logLikFun.
Value
the gradient of the concentrated log-likelihood.
Author(s)
O. Roustant, D. Ginsbourger, Ecole des Mines de St-Etienne
References
J.-S. Park and J. Baek (2001), Efficient computation of maximum likelihood estimators in a spatial linear model with power exponential covariogram, Computer Geosciences, 27 no. 1, 1-7.