1. Department of Business Organization and Marketing, Faculty of Economics and Business, Complutense University of Madrid, Campus de Somosaguas, 28223 Pozuelo de Alarcón, Madrid, Spain
2. Department of Business Organization and Marketing, Faculty of Statistics, Complutense University of Madrid, Avenida Puerta de Hierro, s/n, 28040 Madrid, Spain
3. Faculty of Statistics,Complutense University of Madrid, Avenida Puerta de Hierro, s/n, 28040 Madrid, Spain
4. Andalusian Research Institute in Data Science and Computational Intelligence, University of Granada, Granada, Spain
5. Department of Computer Science and Artificial Intelligence, Faculty of Computer and Telecommunication Engineering (ETSIIT), University of Granada, Granada, Spain