Paper: Specifying The Parameters Of Centering Theory: A Corpus-Based Evaluation Using Text From Application-Oriented Domains

ACL ID P00-1051
Title Specifying The Parameters Of Centering Theory: A Corpus-Based Evaluation Using Text From Application-Oriented Domains
Venue Annual Meeting of the Association of Computational Linguistics
Session Main Conference
Year 2000
Authors

The definitions of the basic concepts, rules, and constraints of centering the- ory involve underspecified notions such as ‘previous utterance’, ‘realization’, and ‘ranking’. We attempted to find the best way of defining each such notion among those that can be annotated reli- ably, and using a corpus of texts in two domains of practical interest. Our main result is that trying to reduce the num- ber of utterances without a backward- looking center (CB) results in an in- creased number of cases in which some discourse entity, but not the CB,gets pronominalized, and viceversa. 1 MOTIVATION Centering Theory (Grosz et al. , 1995; Walker et al. , 1998b) is best characterized as a ‘parametric’ theory: its key definitions and claims involve no- tions such as ‘utterance’, ‘r...