A logic-based calculus of events
New Generation Computing
Maintaining knowledge about temporal intervals
Communications of the ACM
A lexical functional grammar system in PROLOG
COLING '86 Proceedings of the 11th coference on Computational linguistics
Partial orderings and Aktionsarten in discourse representation theory
COLING '88 Proceedings of the 12th conference on Computational linguistics - Volume 1
Time, tense and aspect in natural language database interfaces
Natural Language Engineering
On representing the temporal structure of a natural language text
COLING '92 Proceedings of the 14th conference on Computational linguistics - Volume 1
Temporal structure of discourse
COLING '92 Proceedings of the 14th conference on Computational linguistics - Volume 1
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A proposal to deal with French tenses in the frame-work of Discourse Representation Theory is presented, as it has been implemented for a fragment at the IMS. It is based on the theory of tenses of H. Kamp and Ch. Rohrer.Instead of using operators to express the meaning of the tenses the Reichenbachian point of view is adopted and refined such that the impact of the tenses with respect to the meaning of the text is understood as contribution to the integration of the events of a sentences in the event structure of the preceeding text. Thereby a system of relevant times provided by the preceeding text and by the temporal adverbials of the sentence being processed is used. This system consists of one or more reference times and temporal perspective times, the speech time and the location time. The special interest of our proposal is to establish a plausible choice of "anchors" for the new event out of the system of relevant times and to update this system of temporal coordinates correctly. The problem of choice is largely neglected in the literature. In opposition to the approach of Kamp and Rohrer the exact meaning of the tenses is fixed by the resolution component and not in the process of syntactic analysis.