1. a Department of Computer Science , Pontifical Catholic University of Minas Gerais , Av. Padre Francis Cletus Cox, 1661, 37701‐355, Poços de Caldas, MG, Brazil
2. b School of Electrical and Computer Engineering , State University of Campinas , SP, Brazil
3. c Department of Electrical Engineering , Federal University of Rio Grande do Norte , Natal, RN, Brazil
4. d Agrometeorology Research Center , State University of Campinas , SP, Brazil