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On the cooperation of the constraint domains ℋ, ℛ, and ℱ in CFLP

Published online by Cambridge University Press:  01 July 2009

S. ESTÉVEZ-MARTÍN ,
T. HORTALÁ-GONZÁLEZ ,
M. RODRÍGUEZ-ARTALEJO ,
R. DEL VADO-VÍRSEDA ,
F. SÁENZ-PÉREZ  and
A. J. FERNÁNDEZ
S. ESTÉVEZ-MARTÍN
Affiliation:
Dpto. de Sistemas Informáticos y Computación, Universidad Complutense de Madrid, Spain (e-mail: [email protected], [email protected], [email protected], [email protected])
T. HORTALÁ-GONZÁLEZ
Affiliation:
Dpto. de Sistemas Informáticos y Computación, Universidad Complutense de Madrid, Spain (e-mail: [email protected], [email protected], [email protected], [email protected])
M. RODRÍGUEZ-ARTALEJO
Affiliation:
Dpto. de Sistemas Informáticos y Computación, Universidad Complutense de Madrid, Spain (e-mail: [email protected], [email protected], [email protected], [email protected])
R. DEL VADO-VÍRSEDA
Affiliation:
Dpto. de Sistemas Informáticos y Computación, Universidad Complutense de Madrid, Spain (e-mail: [email protected], [email protected], [email protected], [email protected])
F. SÁENZ-PÉREZ
Affiliation:
Dpto. de Ingeniería del Software e Inteligencia Artificial, Universidad Complutense de Madrid, Spain (e-mail: [email protected])
A. J. FERNÁNDEZ
Affiliation:
Dpto. de Lenguajes y Ciencias de la Computación, Universidad de Málaga, Spain (e-mail: [email protected])
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Abstract

This paper presents a computational model for the cooperation of constraint domains and an implementation for a particular case of practical importance. The computational model supports declarative programming with lazy and possibly higher-order functions, predicates, and the cooperation of different constraint domains equipped with their respective solvers, relying on a so-called constraint functional logic programming (CFLP) scheme. The implementation has been developed on top of the CFLP system , supporting the cooperation of the three domains ℋ, ℛ, and ℱ , which supply equality and disequality constraints over symbolic terms, arithmetic constraints over the real numbers, and finite domain constraints over the integers, respectively. The computational model has been proved sound and complete w.r.t. the declarative semantics provided by the CFLP scheme, while the implemented system has been tested with a set of benchmarks and shown to behave quite efficiently in comparison to the closest related approach we are aware of.

Keywords

cooperating constraint domainsconstraint functional logic programmingconstrained lazy narrowingimplementation
Type
Regular Papers
Information
Theory and Practice of Logic Programming , Volume 9 , Issue 4 , July 2009 , pp. 415 - 527
Copyright
Copyright © Cambridge University Press 2009

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