Refactoring and clarifications.
Some fixes and clean-up.
Step in eliminating input from RBM state.
Another step in eliminating input from RBM state.
3rd step in eliminating input from RBM state.
Finished removing input from state of RBM.
Removed inputs and outputs from state of DBN.
Changes for consistency.
Refactoring and cleanup.
Modifications for consistency.
Cleanup.
Changes for pep8 compliance.