remove dead code, add adagrad crf learner
fix for ubuntu systems
l1 version of adagrad optimizer
Reduce memory overhead for constructing the intersector.
Reduce unordered_map calls.
Merge branch 'master' of https://github.com/redpony/cdec
Clean up leave-one-out sampling.
Serialize vocabulary.
Script for grammar extraction only.
Write config file after compiling data structures.
Merge branch 'master' of github.com:pauldb89/cdec
Unify sampling backoff strategy.