Table 1. A summary of the SlimPLS variants and their properties.

Family	Feature Selector	Description
CONST	n-HIGH-TOP	Use n components, with an equal number of top features from each component
CONST	n-HIGH-TCOMP	As above, but use the modified components as the extracted features
CONST	n-HC-TOP	Use n components, with an equal number of features from each component; Select the features in each component by hill climbing from the K/n top ones, where K is the total number of features selected.
CONST	n-HC-TCOMP	As above, but use the modified components as the extracted features
PVAL-HIGH	p-HIGH-TOP	Select only components that show correlation p-value<p with the label vector; select the number of features from each component according to their relative p-values
PVAL-HIGH	p-HIGH-TCOMP	As above, but use the modified components as the extracted features
PVAL-HC	p-HC-TOP	Select only components that show correlation p-value<p with the label vector; select the number of features from each component according to their relative p-values; Improve by hill climbing
PVAL-HC	p-HC-TCOMP	As above, but use the modified components as the extracted features

In all variants the total number of features selected was set to 50 unless otherwise specified. n is a natural number and p is a real number 0<p<1. This difference in range of the first part of the name distinguishes the CONST from the PVAL variants.