Mercurial > pylearn
diff cost.py @ 434:0f366ecb11ee
log2->log in cost
| author | Olivier Breuleux <breuleuo@iro.umontreal.ca> |
|---|---|
| date | Mon, 04 Aug 2008 16:21:59 -0400 |
| parents | 319bf28c2dd5 |
| children | 45879c1ecde7 |
line wrap: on
line diff
--- a/cost.py Fri Jul 11 15:33:27 2008 -0400 +++ b/cost.py Mon Aug 04 16:21:59 2008 -0400 @@ -8,4 +8,4 @@ return T.mean(T.sqr(target - output), axis) def cross_entropy(target, output, axis=1): - return -T.mean(target * T.log2(output) + (1 - target) * T.log2(1 - output), axis=axis) + return -T.mean(target * T.log(output) + (1 - target) * T.log(1 - output), axis=axis)