31 Igino Corona Giorgio Giacinto Fabio Roli 2008 Intrusion Detection in Computer Systems using Multiple Classifer Systems Supervised and Unsupervised Ensemble Methods and Their Applications Springer-Verlag, Berlin/Heidelberg 91-114 Studies in Computational Intelligence O. Okun and G. Valentini mcs00 ids00 http://springerlink.com/content/p80275821781/front-matter.pdf