covf_mat25pow: Matern covariance function with power transform
In outerbase: Outer Product Regression

covf_mat25pow

R Documentation

Matern covariance function with power transform

covf = new(covf_mat25pow)

This is the standard Matern covariance function with a power transformation which has form

c(x_1,x_2) = (1+ |h| + h^2/3) \exp(-|h|)

where h = (x_1^α-x_2^α)/ρ and hyp is a two dimensional vector with ρ=exp(2*hyp[0]+0.25*hyp[1]) and α=exp(0.25*hyp[1]).

no returns, this is a class which contains methods