"cobweb" is a library that implements an old data clustering algorithm called COBWEB [1].

This library is under a LGPL License

/**
 * 
 * 
 * Copyright (C) 2013 Emmanuel DESMONTILS
 * 
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of the
 * License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 * 
 * 
 * 
 * E-mail:
 * Emmanuel.Desmontils@univ-nantes.fr
 * 
 * 
 **/
 
[1] Douglas H. Fisher, "Knowledge Acquisition Via Incremental Conceptual Clustering", 
    Machine Learning, 2: 139-172, Kluwer Academic Publishers, Boston, 1987