Initial version of grandparent/siblings deptree model.
Also, minor changes to DP model.
Grandparent and siblings model. First version (still incomplete) of
the inference algorithm. More specifically, implemented the first version
of the dynamic programming algorithm.
Grandparent/siblings model: first complete implementation of model
and inference. However, it has not been tested yet.
Grandparent/siblings DP task: tested version model and inference.
Yet, dataset parsing and template-based feature generation is
still missing.
DPGS: updated basic feature arrays on DPGSInput and implemented
a constructor for these basic features.
Added save dataset method to DPGSDataset. Removed bugs.
Minor bugs fixed.
ApplyCoreferenceModel: added option to generate edge dataset containing
only edges in the predicted coreference trees.
Non-artificial root implementation.
Fixed inference method for undirected latent trees with no root node.
Merge branch 'coreference'