has been full professor at Department of Economics and Business of University of Catania since 2001. Since 2013, he has been also affiliated to the Business School of Portsmouth University. He is the vice-president of the Italian Association for Mathematics applied to Social and Economics Sciences.
He is one of the three coordinators of the EURO Working Group in Multiple Criteria Decision Aiding. His research is mainly focused on Multiple Criteria Decision Aiding and Rough Set Theory. In 2013 he received the Gold Medal of International Society on Multiple Criteria Decision Making.