Inducing Head-Driven PCFGs with Latent Heads: Refining a Tree-Bank Grammar for Parsing.

Detlef Prescher Inducing Head-Driven PCFGs with Latent Heads: Refining a Tree-Bank Grammar for Parsing. 292-304 2005 conf/ecml/2005 ECML http://dx.doi.org/10.1007/11564096_30 db/conf/ecml/ecml2005.html#Prescher05