Pentaho BA - WEKA relation

Hi,

I'm a newbie to Pentaho and have just started to explore Pentaho User Console in Pentaho BA.

I have some idea about WEKA but I'm not clear how it fits in/integrates with the Pentaho BA.

I referred this Pentaho link which says that WEKA can be integrated with the Pentaho platform(does that mean Pentaho BA?).

Can someone help me understand as to how Pentaho BA & Pentaho Data mining/WEKA are related ?

Regards,
Omkar