João Mendes-Moreira Alípio Mário Jorge Carlos Soares Jorge Freire de Sousa Ensemble Learning: A Study on Different Variants of the Dynamic Selection Approach. 191-205 2009 MLDM http://dx.doi.org/10.1007/978-3-642-03070-3_15 conf/mldm/2009 db/conf/mldm/mldm2009.html#Mendes-MoreiraJSS09