DOC: improve RBM example
Fix typos in example
PEP8 and indentation
DOC add plot and example to docs
DOC rewrite BernoulliRBM example description
Set seed through params, not globally
FIX handling of random state, hide some of API
nudging the digits dataset for BernouilliRBM example
Pep8 example
Update example params by grid search, and docstring
One space after dot
DOCFIX neural networks module
DOCFIX spacing and clarification in RBM docstring
More stable implementation of logistic function and its derivative by @fabianp
Use gen_even_slices instead of homebaked code
TST added a 'fit [[0],[1]] + gibbs sample it' test for RBMs
replaced test_gibbs by a smoke test for NaNs
check for pseudo_likelihood clipping
ENH Add fast and stable logistic sigmoid to utils and RBM
ENH Support sparse input in RBMs