J. Ariel Carrasco-Ochoa graduated with a B.Sc. in Computer Science from Autonomous University of Puebla, Mexico, in 1989. Later, he received M.Sc. and Ph.D. degrees in Computer Science from the National Polytechnic Institute (CIC-IPN). He is currently working with the National Institute for Astrophysics, Optics and Electronics, Puebla, Mexico. His research interests include logical combinatorial pattern recognition, mixed data analysis, clustering, conceptual clustering, feature selection, prototype selection (instance selection), fast most similar neighbor classifiers, text analysis, text categorization, frequent Pattern mining, and pattern recognition methods for data mining.