Java – Bayesian network in Scala

I am looking for a library to create Bayesian networks and learn and reason in scala (or Java, if there is no better solution) The library should actively maintain and implement, preferably easy and absolutely documented, unless the usage is really simple Free, open source and commercial alternatives are possible, but commercial solutions need to be tried for free

An ideal solution would be equivalent to Net world Net by Microsoft Research

Thank you in advance!

Solution

Factorie is a young project, but it complies with the act and is implemented in scala:

It was developed in Massachusetts by Andrew McCallum and his laboratory, who are also responsible for the very useful mallet machine learning toolkit