Using Application-Specific Ontologies to Improve Performance in a Bottom-up Parser

Abstract

This paper describes how the app1ication specific know1edge represented in onto1ogies is used to improve the processing of user interventions in a mu1ti1ingua1 dia1ogue system for mu1tip1e app1ications. The user interventions are processed by a 1eft-corner parser performing syntactic and semantic ana1ysis in para1-1e1. The parser uses app1ication-restricted grammars and 1exicons obtained from onto1ogies representing the app1ication specific know1edge. It a1so uses the know1-edge of the dia1ogue context to se1ect the grammar ru1es re1ated to the dia1ogue focus.