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detach(name="package:fsdaR", unload=TRUE)
## --------------------------------------------
library(fsdaR)
n=100; p=8; state=1
## randn('state', state);
## The 'seed', 'state', and 'twister' inputs to the randn function are not recommended.
## Use the rng function instead. For more information,
## see Replace Discouraged Syntaxes of rand and randn.
y <- rnorm(n)
X <- matrix(rnorm(n*p), nrow=n)
y[1:10] <- y[1:10] + 5
## % Run the forward search with Exploratory Data Analysis purposes
## % LMS using 10000 subsamples
## [outLXS]=LXS(y,X,'nsamp',10000);
outLTX <- fsreg(y~X, method="LTS", nsamp=10000)
## % Forward Search
## [out]=FSReda(y,X,outLXS.bs);
out <- fsreg(y~X, method="FS", bsb=outLTX$bs, monitoring=TRUE)
## %The monitoring residuals plot shows a set of positive residuals which
## %starting from the central part of the search tend to have a residual much
## %larger than that of the other units.
resfwdplot(out)
## %The minimum deletion residual from m=90 starts going above the 99% threshold.
## mdrplot(out);
## %The curve which monitors the normality test shows a sudden big increase with the outliers included
oldpar <- par(mfrow=c(2,2))
plot(out$nor[,1], out$nor[,2], xlim=c(10,100), main="Asimmetry test", type="l", xlab="", ylab="")
abline(h=qchisq(0.99, 1), col="red")
plot(out$nor[,1], out$nor[,3], xlim=c(10,100), main="Kurtosis test", type="l", xlab="", ylab="")
abline(h=qchisq(0.99, 1), col="red")
plot(out$nor[,1], out$nor[,4], xlim=c(10,100), main="Normality test", type="l", xlab="Subset of size m", ylab="")
abline(h=qchisq(0.99, 2), col="red")
par(oldpar)
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