Informed K-Means: A Clustering Process biased by Prior Knowledge. - Wagner Francisco Castilho; Hércules Antônio do Prado; Marcelo Ladeira (ICEIS (2), 2004)

A Method Based on the Ontology of Language to Support Clusters' Interpretation. - Wagner Francisco Castilho; Gentil José de Lucena Filho; Hércules Antônio do Prado; Edilson Ferneda (ICEIS (2), 2006)

A Conceptual Model for Guiding the Clustering Analysis. - Wagner Francisco Castilho; Gentil José de Lucena Filho; Hércules Antônio do Prado; Edilson Ferneda; Margarete Axt (KES (2), 2008)