1. CSAI research center, Department of Informatics, Systems and Communication, University of Milano-Bicocca, Viale Sarca 336, 20126, Milano, Italy
2. RCAST, The University of Tokyo, Komaba Campus, 4-6-1 Meguro-ku, 153-8904, Tokyo, Japan
3. CSAI research center, Department of Informatics, Systems and Communication, University of Milano-Bicocca, Viale Sarca 336, 20126, Milano, Italy. giuseppe.vizzari@unimib.it