Paper: Algorithms For Analysing The Temporal Structure Of Discourse

ACL ID E95-1035
Title Algorithms For Analysing The Temporal Structure Of Discourse
Venue Annual Meeting of The European Chapter of The Association of Computational Linguistics
Session Main Conference
Year 1995
Authors

We describe a method for analysing the temporal structure of a discourse which takes into account the effects of tense, aspect, temporal adverbials and rhetorical structure and which minimises unnecessary ambiguity in the temporal structure• It is part of a discourse grammar implemented in Carpenter's ALE formalism. The method for building up the tempo- ral structure of the discourse com- bines constraints and preferences: we use constraints to reduce the number of possible structures, exploiting the HPSG type hierarchy and unification for this purpose; and we apply prefer- ences to choose between the remain- ing options using a temporal center- ing mechanism• We end by recom- mending that an underspecified repre- sentation of the structure using these techniques be used to avoid gener...