# kmNoNugget.init

0th

Percentile

##### Fitting Kriging Models

kmNoNugget.init is used to give initial values to fit kriging models when there is no nugget effect nor noisy observations.

Keywords
models, internal, htest
##### Usage
kmNoNugget.init(model, fn, fnscale)
##### Arguments
model

an object of class km.

fn

the function considered: logLikFun or leaveOneOutFun.

fnscale

a real number which sign determines the direction for optimization: <0 for logLikFun, >0 for leaveOneOutFun.

##### Details

The procedure can be summarized in 2 stages:

 1) If no initial value is provided by the user for the covariance parameters, simulate them uniformly inside the domain delimited by model@lower and model@upper. The number of simulations is the one given in model@control\$pop.size.

##### Value

par

a matrix whose rows contain initial vectors of parameters.

value

a vector containing the function values corresponding to par.

cov

a list containing the covariance objects corresponding to par.

lower

,

upper

vectors containing lower and upper bounds for parameters.

km, kmEstimate