The function mean_Delta_T computes the mean function of the difference process \(Z_x - \widetilde{Z}_x\) at x
.
mean_Delta_T(x, kmModel, simupoints, T.mat, F.mat)
a matrix \(r x d\) containing the \(r\) points where the function is to be computed.
the km model of the Gaussian process \(Z\).
the matrix \(l x d\) containing the pilot points \(G\).
the upper triangular factor of the Choleski decomposition of the covariance matrix of rbind(kmModel@X,simupoints)
the evaluation of the trend function at rbind(kmModel@X,simupoints)
, see model.matrix.
the value of the mean function at x
for the difference process \(Z^\Delta = Z_x - \widetilde{Z}_x\).