Weka (Waikato Environment for Knowledge Analysis) 3 is a popular machine learning suite written in Java. The algorithms included in weka 3 can either be applied directly to your data or called from your Java code.
More about Weka 3:
Weka 3 | The homepage of Weka 3. |
Weka 3 at sourcforge.net | The project page of Weka 3 hosted on sourceforge.net. |