I took my degree in 1988 at the Faculty of Economics of the University of Catania where I have been a researcher since 1994, associated professor since 1998 and full professor since 2001. I have been teaching Decision Theory, General Mathematics and Financial Mathematics. My research regards Multiple Criteria Decision Aiding (MCDA).  Together with Benedetto Matarazzo and Roman Slowinski, I proposed the Dominance-based Rough Set Approach (DRSA) which permits to apply rough set theory within MCDA. Together with other colleagues, I have also proposed Robust Ordinal Regression (ROR) which permits to take into account the whole set of value functions representing the preference information given by the decision maker. I have  been working also on application of non-additive integrals to MCDA proposing, together with Benedetto Matarazzo and Silvio Giove, a new powerful generalization of the Choquet integral: the level dependent Choquet integral. Together with Josè Figueira and Matthias Ehrgott, I am the editor of a state of art collection in MCDA, published by Springer in 2005, which has become a reference book receiving 1281 citations according to Google Scholar: J. Figueira, S. Greco, M. Ehrgott (eds.) (2005). Multiple Criteria Decision Analysis: State of the Art Surveys. NEW YORK: Springer.