== Organizing Committee == The Fourth Answer Set Programming Competition is hosted and regulated jointly by Knowledge Representation research groups at the University of Calabria (Italy) and the Vienna University of Technology (Austria). * ''Co-Chairs'': Giovambattista Ianni, Thomas Krennwallner * ''Publicity Chair'': Francesco Calimeri * ''Collaborators'': Guenther Charwat, Minh Dao-Tran, Bernhard Kragl, Bernhard Kragl, Johannes Oetsch, Andreas Pfandler, Jörg Pührer, Christoph Redl, Francesco Ricca, Martin Schwengerer, Martin Schwengerer, ohannes Peter Wallner, Guohui Xiao. * ''Wiki and Webmaster'': Patrik Schneider