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######################################################################
#
# BayesHMethods.R
#
# copyright (c) 2016-2016, Renato Rodrigues Silva
# last modified Mar, 2016
# first written Jan, 2016
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License,
# version 3, as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose. See the GNU
# General Public License, version 3, for more details.
#
# A copy of the GNU General Public License, version 3, is available
# at http://www.r-project.org/Licenses/GPL-3
#
# Part of the BayesH package
# Contains: predict.BayesH, plot.BayesH and summary.BayesH
# Remarks: This code is an adaptation of code written by Perez and
# De Los Campos (2014).
#
#######################################################################
predict.BayesH =function(object,newdata, ...)
{
if (!inherits(object, "BayesH")){
stop("This function only works for objects of class `BayesH'")
}
if(missing(newdata) || is.null(newdata)) {
return(object$fitted.values)
} else if(!is.null(newdata) && (is.matrix(newdata) || is.data.frame(newdata))){
return(as.matrix(newdata)%*%object$coef)
} else {
stop("You must define the newdata as matrix or data.frame")
}
}
plot.BayesH =function(x,...)
{
### Check that object is compatible
if(!inherits(x, "BayesH")){
stop("This function only works for objects of class `BayesH'")
}
#limits<-range(c(x$y,x$fitted.values),na.rm=TRUE)
plot(x$y,x$fitted.values,main="Training",xlab='Response',ylab='Prediction', pch=16)
abline(a=0,b=1,lty=3)
}
summary.BayesH = function(object,...)
{
if(!inherits(object, "BayesH")) {
stop("This function only works for objects of class `BayesH'")
}
tmp = paste('-------------------Summary of model -------------------------')
cat(tmp,'\n\n')
cat('Variance of observed response (TRN)=', round(var(object$y,na.rm=TRUE),4),'\n')
cat('Error variance=',round(mean(object$sigmaGibbs, na.rm=TRUE),4),'\n')
n = length(object$y)
if(any(is.na(object$y)))
{
tst = which(is.na(object$y))
cat('N-TRN=',n-length(tst), 'N-TST=',length(tst),'\n')
cat('Correlation TRN=',round(cor(object$y,object$fitted.values, use = "complete.obs"),4),'\n')
} else{
cat('N-TRN=',n,'N-TST=0', '\n\n')
}
}
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