More details on Phrasal discriminative features

Various discriminative features can be specified under the [additional-featurizers] section in Phrasal *.ini files.

Discriminative Phrase Table

edu.stanford.nlp.mt.decoder.feat.sparse.DiscriminativePhraseTable(arg1,arg2,arg3)

 "arg1" --  true/false, whether to use lexicalized features or not (default=true)
 "arg2" --  true/false, whether to use class-based features or not (default=false)
 "arg3" --  int, whether to threshold feature counts (default=-1, no thresholding)

Discriminative Alignments

edu.stanford.nlp.mt.decoder.feat.sparse.DiscriminativeAlignments(arg1,arg2,arg3)

 "arg1" --  true/false, whether to add source deletions or not (default=false)
 "arg2" --  true/false, whether to add target insertions or not (default=false)
 "arg3" --  true/false, whether to use class-based features or not (default=false)

Lexical Reordering

edu.stanford.nlp.mt.decoder.feat.base.LexicalReorderingFeaturizer(args), each argument can take one of the following values:

 "conditionOnConstellations"
 "classes"
 "useClasses" --  use word classes
 "countFeatureIndexN" -- N is an int, whether to threshold feature counts (N<0, no thresholding).