R: Concentrated log-Likelihood of a km object - Analytical...

logLikGrad {DiceKriging} | 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.

### See Also

`km`, `logLikFun`

[Package DiceKriging version 1.5.8 Index]