Using transposed betas, lowercased model.x and y, fixed called to dump
when scores aren't updated.
Lowercased model.x and model.y.
Do transpose out of gpu, got out-of-memory.
No need to compute_costs if we are just doing dump.
update_dump needs to be an internal method.
Always output pred, it could be different than head even if we follow
the mincost path.
Initialize m.pred if m.dump.
Copyable.
Copyable.
Copyable.
Profile improvements, test and dump validated, training works.
Updates.