C-3: Coherence and Coreference Corpus
Cristina Nicolae, Gabriel Nicolae, Kirk E Roberts · 2010
The phenomenon of coreference, covering entities, their mentions and their properties, is intricately linked to the phenomenon of coherence, covering the structure of rhetorical relations in a discourse.A text corpus that has both phenomena annotated can be used to test hypotheses about their interrelation or to detect other phenomena.We present the process by which C-3, a new corpus, was obtained by annotating the Discourse GraphBank coherence corpus with entity and mention information.The annotation followed a set of ACE guidelines adapted to favour coreference and to include entities of unknown types in the annotation.Together with the corpus we offer a new annotation tool specifically designed to annotate entity and mention information within a simple and functional graphical interface that combines the "best of all worlds" from available annotation tools.The potential usefulness of C-3 is discussed, as well as an application in which the corpus proved to be a valuable resource.