Nothing
Predict_kernel_Ridge_MM <-
function( Model_kernel_Ridge_MM, Matrix_covariates_target,
X_target=as.vector(rep(1,dim(Matrix_covariates_target)[1])),
Z_target=diag(1,dim(Matrix_covariates_target)[1]) )
{
###=====================================###
### Get fixed effects from model object ###
###=====================================###
Beta_hat=Model_kernel_Ridge_MM$Beta_hat
###===============================================###
### kernel Ridge regression (aka RKHS regression) ###
###===============================================###
if ( identical( Model_kernel_Ridge_MM$method, "RKHS" ) )
{
###-----------------###
### Gaussian kernel ###
###-----------------###
if ( identical( Model_kernel_Ridge_MM$kernel, "Gaussian" ) )
{
p=dim(Model_kernel_Ridge_MM$Matrix_covariates_train)[2]
rbf=rbfdot(sigma = (1/p)*Model_kernel_Ridge_MM$rate_decay_kernel)
K_target_train=kernelMatrix(rbf, Matrix_covariates_target, Model_kernel_Ridge_MM$Matrix_covariates_train)
if ( length(Beta_hat) > 1 )
{
f_hat = X_target%*%Beta_hat + Z_target%*%K_target_train%*%Model_kernel_Ridge_MM$Vect_alpha
}else{
f_hat = X_target*Beta_hat + Z_target%*%K_target_train%*%Model_kernel_Ridge_MM$Vect_alpha
}
return( f_hat )
###------------------###
### Laplacian kernel ###
###------------------###
} else if ( identical( Model_kernel_Ridge_MM$kernel, "Laplacian" ) ) {
p=dim(Model_kernel_Ridge_MM$Matrix_covariates_train)[2]
rbf=laplacedot(sigma = (1/p)*Model_kernel_Ridge_MM$rate_decay_kernel)
K_target_train=kernelMatrix(rbf, Matrix_covariates_target, Model_kernel_Ridge_MM$Matrix_covariates_train)
if ( length(Beta_hat) > 1 )
{
f_hat = X_target%*%Beta_hat + Z_target%*%K_target_train%*%Model_kernel_Ridge_MM$Vect_alpha
}else{
f_hat = X_target*Beta_hat + Z_target%*%K_target_train%*%Model_kernel_Ridge_MM$Vect_alpha
}
return( f_hat )
###-------------------###
### Polynomial kernel ###
###-------------------###
} else if ( identical( Model_kernel_Ridge_MM$kernel, "Polynomial" ) ) {
rbf=polydot(degree = Model_kernel_Ridge_MM$degree_poly, scale = Model_kernel_Ridge_MM$scale_poly,
offset = Model_kernel_Ridge_MM$offset_poly )
K_target_train=kernelMatrix(rbf, Matrix_covariates_target, Model_kernel_Ridge_MM$Matrix_covariates_train)
if ( length(Beta_hat) > 1 )
{
f_hat = X_target%*%Beta_hat + Z_target%*%K_target_train%*%Model_kernel_Ridge_MM$Vect_alpha
}else{
f_hat = X_target*Beta_hat + Z_target%*%K_target_train%*%Model_kernel_Ridge_MM$Vect_alpha
}
return( f_hat )
###--------------###
### ANOVA kernel ###
###--------------###
} else if ( identical( Model_kernel_Ridge_MM$kernel, "ANOVA" ) ){
p=dim(Model_kernel_Ridge_MM$Matrix_covariates_train)[2]
rbf=anovadot(sigma = (1/p)*Model_kernel_Ridge_MM$rate_decay_kernel, degree = Model_kernel_Ridge_MM$degree_anova)
K_target_train=kernelMatrix(rbf, Matrix_covariates_target, Model_kernel_Ridge_MM$Matrix_covariates_train)
if ( length(Beta_hat) > 1 )
{
f_hat = X_target%*%Beta_hat + Z_target%*%K_target_train%*%Model_kernel_Ridge_MM$Vect_alpha
}else{
f_hat = X_target*Beta_hat + Z_target%*%K_target_train%*%Model_kernel_Ridge_MM$Vect_alpha
}
return( f_hat )
}
###==========================================================================================###
### Ridge regression with estimated marker effects (aka RR-BLUP or GBLUP with linear kernel) ###
###==========================================================================================###
} else if ( identical( Model_kernel_Ridge_MM$method, "RR-BLUP" ) ){
Matrix_covariates_target=scale(Matrix_covariates_target, center=TRUE, scale=FALSE)
if ( length(Beta_hat) > 1 )
{
f_hat = X_target%*%Beta_hat + Z_target%*%Matrix_covariates_target%*%Model_kernel_Ridge_MM$Gamma_hat
}else{
f_hat = X_target*Beta_hat + Z_target%*%Matrix_covariates_target%*%Model_kernel_Ridge_MM$Gamma_hat
}
return( f_hat )
###================###
### GBLUP directly ###
###================###
} else if ( identical( Model_kernel_Ridge_MM$method, "GBLUP" ) ){
###----------------------------###
### Linear kernel (i.e. GBLUP) ###
###----------------------------###
Matrix_covariates_target=scale(Matrix_covariates_target, center=TRUE, scale=FALSE)
K_target_train=Matrix_covariates_target%*%t(Model_kernel_Ridge_MM$Matrix_covariates_train)
if ( length(Beta_hat) > 1 )
{
f_hat = X_target%*%Beta_hat + Z_target%*%K_target_train%*%Model_kernel_Ridge_MM$Vect_alpha
}else{
f_hat = X_target*Beta_hat + Z_target%*%K_target_train%*%Model_kernel_Ridge_MM$Vect_alpha
}
return( f_hat )
}
}
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