Generalized DATR for flexible lexical access : PROLOG specification

This report discusses criteria for a computational lexicon with flexible access strategies, and specifies a new generalised, constraint-oriented query language for DATR lexica (EDQL) which meets these requirements. A specification of EDQL semantics is given in Pure Prolog, and an implementation based on this specification, the Open DATR Engine (ODE), is described. The implementation is in Sicstus Prolog. The approach to integrated lexica is illustrated with a "microlexicon" containing elementary semantic and surface lexical information. The ODE concept is intended as a general specification for spoken language lexicon acquisition and application research in the VERBMOBIL project (Work Packages 5.1 and 5.9); it is not a specification for the VERBMOBIL lexicon system. Dieser Bericht behandelt Kriterien fur Computerlexika mit flexiblen Zugriffsstrategien und stellt eine neue, generalisierte, constraint-orientierte Anfragesprache fur DATR-Lexika vor (EDQL). Die Semantik fur EDQL wird in Kern-Prolog spezifiziert und eine auf dieser Spezifikation basierende Implementierung, die "Open DATR Engine", ODE, wird beschrieben. Die Implementierungssprache ist Sicstus-Prolog. Der Ansatz im Bereich der integrierten Lexika wird anhand eines Mikrolexikons mit elementarer semantischer und Oberflachen-Information veranschaulicht. Das ODE-Modell soll eine allgemeine Spezifikation fur die Akquisition und die Anwendung von Lexika im VERBMOBIL-Projekt (Arbeitspakete 5.1, 5.9) darstellen; es handelt sich nicht um eine Spezifikation des VERBMOBILLexikonsystems.

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