Nothing
PEVMEANMM <-
function(Train,Test, Kinv,K, lambda=1e-5, C=NULL, Vg=NULL, Ve=NULL){
ntrain<-length(Train)
M<-matrix(-1/ntrain,ntrain,ntrain)+diag(ntrain)
X<-matrix(1, ncol=1, nrow=ntrain)
namesinPforfactorlevels<-rownames(Kinv)
factorTrain<-factor(as.character(Train), levels=namesinPforfactorlevels)
factorTest<-factor(as.character(Test), levels=namesinPforfactorlevels)
Ztrain<-as.matrix(model.matrix(~factorTrain-1))
Ztest<-as.matrix(model.matrix(~factorTest-1))
if ((is.null(Vg)||is.null(Ve))){
if (!is.null(C)){Ztest<-C%*%Ztest}
PEVMAT<-Ztest%*%solve(crossprod(Ztrain,M%*%Ztrain)+lambda*Kinv)%*%t(Ztest)
} else {
bigX<-kronecker(diag(ncol(Vg)), X)
bigZtrain<-kronecker(diag(ncol(Vg)), Ztrain)
bigZtest<-kronecker(diag(ncol(Vg)), Ztest)
if (!is.null(C)){bigZtest<-C%*%bigZtest}
Ginv<-kronecker(solve(Vg), Kinv)
Rinv<-kronecker(solve(Ve), diag(ntrain))
XtRinvX<-t(bigX)%*%Rinv%*%bigX
ZtRinvX<-t(bigZtrain)%*%Rinv%*%bigX
ZtRinvZ<-t(bigZtrain)%*%Rinv%*%bigZtrain
PEVMAT<- (bigZtest%*%solve(ZtRinvZ+Ginv-ZtRinvX%*%solve(XtRinvX)%*%t(ZtRinvX))%*%t(bigZtest))
}
return(mean(diag(PEVMAT)))
}
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