Title
Expletives in Universal Dependency Treebanks.
Abstract
Although treebanks annotated according to the guidelines of Universal Dependencies (UD) now exist for many languages, the goal of annotating the same phenomena in a crosslinguistically consistent fashion is not always met. In this paper, we investigate one phenomenon where we believe such consistency is lacking, namely expletive elements. Such elements occupy a position that is structurally associated with a core argument (or sometimes an oblique dependent), yet are non-referential and semantically void. Many UD treebanks identify at least some elements as expletive, but the range of phenomena differs between treebanks, even for closely related languages, and sometimes even for different treebanks for the same language. In this paper, we present criteria for identifying expletives that are applicable across languages and compatible with the goals of UD, give an overview of expletives as found in current UD treebanks, and present recommendations for the annotation of expletives so that more consistent annotation can be achieved in future releases.
Year
Venue
Field
2018
UDW@EMNLP
Oblique case,Annotation,Computer science,Syntactic expletive,Universal dependencies,Artificial intelligence,Natural language processing,Phenomenon
DocType
Citations 
PageRank 
Conference
0
0.34
References 
Authors
0
6
Name
Order
Citations
PageRank
Gosse Bouma148370.88
Jan Hajic21184109.62
Dag Haug311.40
Joakim Nivre43652229.07
Per Erik Solberg5141.80
Lilja Øvrelid618727.28