January-March 2011, Vol. 4, No. 1 Journal of InformatIon technology research Special Issue on Medical Diagnosis Systems Guest Editorial Preface i Medical Diagnosis Systems Alejandro Rodríguez González, Universidad Carlos III de Madrid, Spain Miguel A. Mayer, Universitat Pompeu Fabra of Barcelona, Spain Research Articles 1 The Consistency of the Medical Expert System CADIAG-2: A Probabilistic Approach Pavel Klinov, The University of Manchester, UK Bijan Parsia, The University of Manchester, UK David Picado Muiño, Institut für Diskrete Mathematik und Geometrie, Austria 21 Development of a Knowledge Based System for an Intensive Care Environment Using Ontologies Ana Torres Morgade, University of A Coruña, Spain Marcos Martínez-Romero, University of A Coruña, Spain José M. Vázquez-Naya, University of A Coruña, Spain Miguel Pereira Loureiro, Meixoeiro Hospital of Vigo, Spain Ángel González Albo, University of A Coruña, Spain Javier Pereira Loureiro, University of A Coruña, Spain 34 Breast Cancer Diagnosis Using Optimized Atribute Division in Modular Neural Networks Rahul Kala, Indian Institute of Information Technology and Management Gwalior, India Anupam Shukla, Indian Institute of Information Technology and Management Gwalior, India Ritu Tiwari, Indian Institute of Information Technology and Management Gwalior, India 48 DISMON: Using Social Web and Semantic Technologies to Monitor Diseases in Limited Environments Ángel Lagares-Lemos, Universidad Carlos III de Madrid, Spain Miguel Lagares-Lemos, Universidad Carlos III de Madrid, Spain Ricardo Colomo-Palacios, Universidad Carlos III de Madrid, Spain Ángel García-Crespo, Universidad Carlos III de Madrid, Spain Juan M. Gómez-Berbís, Universidad Carlos III de Madrid, Spain table of Contents