Distributed Computing and Artificial Intelligence, Special Sessions, 15th International Conference - Rodríguez, Sara; Prieto, Javier; Faria, Pedro; Kłos, Sławomir; Fernández, Alberto; Mazuelas, Santiago; Jiménez-López, M. Dolores; Moreno, María N.; Navarro, Elena M. (Springer International Publishing : Imprint: Springer, 2019)