MALLET is a Java-based package for statistical natural language processing, document classification, clustering, topic modeling, information extraction, and other machine learning applications to text.
S. Sekine. Proceedings of the Sixth International Language Resources and Evaluation (LREC'08), Marrakech, Morocco, European Language Resources Association (ELRA), (Mai 2008)http://www.lrec-conf.org/proceedings/lrec2008/.