@article{articlea01a71b2,
title   = {Balancing training data for automated annotation of keywords:: a case study},
author = {Batista, Gustavo Enrique de Almeida Prado Alves and Bazzan, Ana Lúcia Cetertich and Monard, Maria Carolina},
year = {2003},
journal   = {Revista Tecnologia da Informação}
}