Computer Science – Computation and Language
Scientific paper
1996-11-25
Proc. of the 20th Australasian Computer Science Conference, Sydney, 1997, pp. 307-315.
Computer Science
Computation and Language
9 pages, uses the included acsc.sty, and the included *.eps figures. To appear in the 20th Australasian Computer Science Confe
Scientific paper
Over the past thirty years, there has been considerable progress in the design of natural language interfaces to databases. Most of this work has concerned snapshot databases, in which there are only limited facilities for manipulating time-varying information. The database community is becoming increasingly interested in temporal databases, databases with special support for time-dependent entries. We have developed a framework for constructing natural language interfaces to temporal databases, drawing on research on temporal phenomena within logic and linguistics. The central part of our framework is a logic-like formal language, called TOP, which can capture the semantics of a wide range of English sentences. We have implemented an HPSG-based sentence analyser that converts a large set of English queries involving time into TOP formulae, and have formulated a provably correct procedure for translating TOP expressions into queries in the TSQL2 temporal database language. In this way we have established a sound route from English to a general-purpose temporal database language.
Androutsopoulos Ion
Ritchie G. D.
Thanisch P.
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