1. Department of Information Engineering and Computer Science, University of Trento, Trento, Trentino, Italy
2. College of Computer & Information Science, Northeastern University, Boston, MA, United States
3. Fondazione Bruno Kessler, Trento, Trentino, Italy
4. Department of Psychology, Humboldt-Universität zu Berlin, Berlin, Germany
5. Department of Economy, Tomsk Polytechnical University, Tomsk, Russia