An Introduction to Variable and Feature Selection (Kernel Machines Section) Isabelle Guyon, André Elisseeff; 3(Mar):1157--1182, 2003. [abs][pdf] [ps.gz] [ps] Distributional Word Clusters vs. Words for Text Categorization (Kernel Machines Section) Ron Bekkerman, Ran El-Yaniv, Naftali Tishby, Yoad Winter; 3(Mar):1183--1208, 2003. [abs][pdf] [ps.gz] [ps] [data] Extensions to Metric Based M