Amir Navot Ran Gilad-Bachrach Yiftah Navot Naftali Tishby Is Feature Selection Still Necessary? 127-138 2005 conf/slsfs/2005 SLSFS http://dx.doi.org/10.1007/11752790_8 db/conf/slsfs/slsfs2005.html#NavotGNT05