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

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...