laurent-dinh/pylearn — comment on commit 77005583b913d276827de0999cc6961ea7b3082b
File: pylearn2/costs/error.py line 2
By goodfeli:

Since this is in a module called 'costs', it's a bit confusing to use the word 'error'.

I think it would make more sense to call these SupervisedCost and UnsupervisedCost. To avoid having more submodules we should put them in pylearn2/costs/__init__.py.