Selected professional activities

Editorial board, Fundamenta Informaticae.
Editorial Board, International Journal of Intelligent Automation and Soft Computing.
Member, Institut für semantische Informationsverarbeitung, Universität Osnabrück
Referee for numerous journals.
Reviewer for Mathematical Reviews.
Organizer of the session Rough set data analysis - from theory to application at IMACS World Congress, August 1997.
Co-organizer Workshop on Synthesis of Intelligent Agent Systems from Experimental Data, ECAI'98, Brighton, August 1998.
Invited lecture at RelMiCS 4, Banach Center, Warsaw, September 1998.
Invited lecture at the COST 15 workshop Multi-valued Logic in Computer Science Applications, Heraklion, 1999.
Tutorial "Relation algebras in spatial reasoning", COSIT 99
Tutorial "Non-invasive data analysis", KES 2000
Invited lecture at the Alfred Tarski Centenial Conference, Warsaw, May 2001.