A compositional semantics of temporal expressions in English

Erhard W. Hinrichs
1987 Proceedings of the 25th annual meeting on Association for Computational Linguistics -  
This paper describes a compositional semantics for temporal expressions as part of the meaning representation language (MRL) of the JANUS system, a natural language understanding and generation system under joint development by BBN Laboratoires and the Information Sciences Institute. 1 The analysis is based on a higher order intansional logic described in detail in Hinrichs, Ayuso and Scha (1987). Temporal expressions of English are translated into this language as quantifiers over times which
more » ... s over times which bind temporal indices on predicates. The semantic evaluation of time-dependent predicates is defined relative to a set of discourse contexts, which, following Reichenbach (1947) , include the parameters of speech time and reference time. The resulting context-dependent and multi-indexed interpretation of temporal expressions solves a set of well-known problems that arise when traditional systems of tense logic are applied to natural language semantics. Based on the principle of rule-to-rule translation, the compositional nature of the analysis provides a straightforward and welldefined interface between the parsing component and the semantic interpretation component of JANUS.
doi:10.3115/981175.981177 dblp:conf/acl/Hinrichs87 fatcat:mymxozwa6bc37dalbuxblznj5a