Affiliation: | 1.School of Computer and Information Engineering, Henan University, Kaifeng, China ;2.University of the Basque Country UPV/EHU, San Sebastian, Spain ;3.IKERBASQUE, Basque Foundation for Science, Bilbao, Spain ;4.Laboratoire d’Informatique et des Systèmes (LIS), Université de Toulon, Toulon, France ; |