- Changed ConditionalExponentialModel to use different weight formalism.   w_new = exp(w_old) - General clean-up - Changes to avoid division by zero - Minor changes to test code
- Changed ConditionalExponentialModel to use different weight formalism.
  w_new = exp(w_old)
- General clean-up
- Changes to avoid division by zero
- Minor changes to test code


svn/trunk@428

nltk/nltk,nltk/nltk,nltk/nltk