[1] Politecn Milan, Dipartimento Elettron Informaz & Bioingn, Milan, Italy
[2] Univ Cologne, Fac Management Econ & Social Sci, Cologne Inst Informat Syst, Cologne, Germany
[3] Hong Kong Univ Sci & Technol, Dept Ind Engn & Decis Analyt, Hong Kong, Peoples R China
[4] Delft Univ Technol, Dept Ind Design, Delft, Netherlands
[5] Politecn Milan, META Social Sci & Humanities Sci & Technol, Milan, Italy