Nothing
cor.bsreg <- function(target, dataset, threshold = 0.05) {
tic <- proc.time()
threshold <- log(threshold)
dm <- dim(dataset)
if ( is.null(dm) ) {
n <- length(target)
p <- 1
} else {
n <- dm[1] ## sample size
p <- dm[2] ## number of variables
}
if ( p > n ) {
res <- paste("The number of variables is hiher than the sample size.
No backward procedure was attempted")
} else {
dataset <- as.data.frame(dataset)
ci_test <- "testIndFisher"
mat <- cor.drop1(target, dataset, logged = TRUE)
mat <- cbind(1:p, mat[, 2], mat[, 1] )
colnames(mat) <- c("variable", "log.p-values", "statistic" )
rownames(mat) <- 1:p
sel <- which.max( mat[, 2] )
info <- matrix( c(0, -10, -10) , ncol = 3 )
sela <- sel
if ( mat[sel, 2] < threshold ) {
runtime <- proc.time() - tic
res <- list(runtime = runtime, info = matrix(0, 0, 3), mat = mat, ci_test = ci_test, final = lm(target ~., dataset) )
} else {
info[1, ] <- mat[sel, ]
mat <- mat[-sel, , drop = FALSE]
dat <- dataset[, -sel, drop = FALSE]
final <- "No variables were selected"
i <- 1
while ( info[i, 2] > threshold & dim(dat)[2] > 0 ) {
i <- i + 1
k <- p - i + 1
mod <- cor.drop1(target, dat, logged = TRUE)
stat <- mod[, 1]
pval <- mod[, 2]
ini <- lm(target ~., dat)
if ( k == 1 ) {
if (pval > threshold ) {
final <- "No variables were selected"
info <- rbind(info, c(mat[, 1], pval, stat) )
dat <- dataset[, -info[, 1], drop = FALSE ]
mat <- NULL
} else {
info <- rbind( info, c(0, -10, -10) )
final <- ini
mat[, 2:3] <- c(pval, stat)
}
} else {
mat[, 2:3] <- cbind( pval, stat )
sel <- which.max( mat[, 2] )
if ( mat[sel, 2] < threshold ) {
final <- ini
info <- rbind(info, c(0, -10, -10) )
} else {
info <- rbind(info, mat[sel, ] )
mat <- mat[-sel, , drop = FALSE]
dat <- dataset[, -info[, 1], drop = FALSE]
}
}
}
runtime <- proc.time() - tic
info <- info[ info[, 1] > 0, , drop = FALSE]
res <- list(runtime = runtime, info = info, mat = mat, ci_test = ci_test, final = final )
} ## end if ( mat[sel, 2] < threshold )
} ## end if ( p > n )
res
}
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.