[douglas]

You mean forces belonging to an AI player? They do if they happen to end a turn in the right sector, but the AI isn't smart enough to use them deliberately. The only way AI controlled fleets usually get trained is if the race is psychic and has the system-wide training facilities built everywhere, which don't stack.

If you mean ships with master computers instead of bridge, life support, and crew quarters, there's no difference. The master computers get trained at exactly the same rate as everything else.