MALLET

MALLET is an open-source Java-based machine learning toolkit designed for advanced natural language processing tasks. It provides tools for document classification, clustering, topic modeling (such as LDA), and information extraction, with efficient routines for converting text to features, a variety of machine learning algorithms, and robust numerical optimization methods. This toolkit is intended for researchers, developers, and data scientists who need statistical NLP and text mining tools, and also includes extensible support for sequence tagging and custom pipelines.