Paper: Deriving Database Queries From Logical Forms By Abductive Definition Expansion

ACL ID A92-1001
Title Deriving Database Queries From Logical Forms By Abductive Definition Expansion
Venue Applied Natural Language Processing Conference
Session Main Conference
Year 1992
Authors

The paper describes a principled approach to the problem of deriving database queries from logical forms produced by a general NL in- terface. Our method attempts to construct a database query and a set of plausible assump- tions, such that the logical form is equivalent to the query given the assumptions. The do- main information needed is provided as declar- ative meaning postulates, including "defini- tional equivalences". The technical basis for the approach is that a "definition" of the form Head A Conditions ~ Body can be read pro- cedurally as "Expand Head to Body if it oc- curs in an environment where Conditions can be inferred". The "environment" is provided by the other conjuncts occurring together with Head in the original logical form, together with other meaning postulates and...