Cdec source feature cleanup (untested).
Bug fixes.
Disable sigmoid for NCE.
Update readme.
Stop training when test perplexity converges.
Early stopping for conditional models.
Add rectifier non-linearity.
Add ReLU to factored models.
Update ReadMe.
Fix unit test.
Introduce argument for model evaluation frequency.
Print config in evaluate scripts.
Introduce extra hidden layers in the model.
Fix identity gradient.
Reduce minibatch size for model validation.
Update score.cc to compute perplexity through the FF API.
Tree factored model.
Script for creating tree files.
Fix memory leak.
Flatten trees up to some branching factor.