Incremental constraint satisfaction for equational logic programming:

Abstract: "In this paper we are concerned with an instance of the CLP scheme specialized in solving equations with respect to a Horn equational theory [epsilon]. The intended structure [eta]/[epsilon] is given by the finest partition induced by [epsilon] on the Herbrand Universe [eta] over a fi...

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Bibliographische Detailangaben
Hauptverfasser: Alpuente, María (VerfasserIn), Falaschi, Moreno (VerfasserIn), Scutellà, Maria Grazia (VerfasserIn)
Format: Buch
Sprache:English
Veröffentlicht: Pisa 1991
Schriftenreihe:Università degli Studi <Pisa> / Dipartimento di Informatica: Technical report 1991,20
Schlagworte:
Zusammenfassung:Abstract: "In this paper we are concerned with an instance of the CLP scheme specialized in solving equations with respect to a Horn equational theory [epsilon]. The intended structure [eta]/[epsilon] is given by the finest partition induced by [epsilon] on the Herbrand Universe [eta] over a finite one sorted alphabet. This work deals with the description of an incremental constraint solver as the kernel of an operational semantics for the language CLP ([eta]/[epsilon])
The primary issues are: how to verify the solvability of constraints in the structure [eta]/[epsilon] by using some sound and complete semantic unification procedure such as narrowing, how to simplify constraints in a computation sequence, how to achieve incrementality in the computation process and how to profit from finitely failed derivations as a heuristic for optimizing the algorithms. Fixpoint and model-theoretic semantics are obtained in a straightforward way.
Beschreibung:39 S.

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