Institution: | a Computer Science Department, Universidad Carlos III de Madrid, Av. Universidad, 30, 28911 Leganés, Madrid, Spain b Meta4 Spain, Centro Europa Empresarial, Edificio Roma, C/. Rozabella, 8, 28290 Las Rozas, Madrid, Spain c Department of Management & Finance, University of Murcia, Campus de, Espinardo, 30100 Espinardo, Murcia, Spain |