TY - JOUR TI - Artificial Neural Networks Restriction for Road Accidents Severity Classification in Unbalanced Database AU - CHUERUBIM, M.L. AU - VALEJO, A. AU - BEZERRA, B.S. AU - SILVA, I.D. JO - Sigma Journal of Engineering and Natural Sciences PY - 2019 VL - 37 SP - 927 EP - 940 DO - ER -