[1] Universidad de Sevilla,Research Group on Natural Computing, Department of Computer Science and Artificial Intelligence
[2] Universidad de Sevilla,SCORELab, I3US
[3] Università degli Studi di Milano-Bicocca,Dipartimento di Informatica, Sistemistica e Comunicazione (DISCo)
[4] Silesian University in Opava,Faculty of Philosophy and Science, Institute of Computer Science