English Multiword Expression-aware Dependency Parsing Including Named Entities
Akihiko Kato, Hiroyuki Shindo, Yūji Matsumoto · 2017
Because syntactic structures and spans of multiword expressions (MWEs) are independently annotated in many English syntactic corpora, they are generally inconsistent with respect to one another, which is harmful to the implementation of an aggregate system.In this work, we construct a corpus that ensures consistency between dependency structures and MWEs, including named entities.Further, we explore models that predict both MWEspans and an MWE-aware dependency structure.Experimental results show that our joint model using additional MWEspan features achieves an MWE recognition improvement of 1.35 points over a pipeline model.