Default dimension to 128
added lexicon reconstruction
bugfix for dimension
added lexicon for a little bit of supervision
use of inverse in sigmoid computation for safer arithmetic (probably)
serious bugfix for zero initialization
TODO: do not lexically penalize at the leaf level, but penalize on each non-terminal
removed lexicon from the model
include span when its error is less than infinity
added lexical feedback
updated parsing code again for checking unique spans
Removed lexical constraint.
output derivation
updated gitignore for the latest autoconf tools
Fixed commen to reflect the final implementation
Bugfix for selecting the appropriate ordering matrix.
use of total error for reconstruction
Lexical correspondence from Model 1
temporarily exclude lexical probabilities, but encode surrounding context for embedding
added operator-= for parameters