( 5 months ago )
In , one of the motivations to use feature selection is stated to be: "to gain knowledge about the process that generated the data".
What does this "process" actually mean? and How does feature selection help in recovering it?
 Guyon, Isabelle, and André Elisseeff. "An introduction to feature extraction." Feature extraction. Springer Berlin Heidelberg, 2006. 1-25.