Abstract Solvers for Computing Cautious Consequences of ASP programs

Abstract solvers are a method to formally analyze algorithms that have been profitably used for describing, comparing and composing solving techniques in various fields such as Propositional Satisfiability (SAT), Quantified SAT, Satisfiability Modulo Theories, Answer Set Programming (ASP), and Const...

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Bibliographic Details
Published in:Theory and practice of logic programming Vol. 19; no. 5-6; pp. 740 - 756
Main Authors: AMENDOLA, GIOVANNI, DODARO, CARMINE, MARATEA, MARCO
Format: Journal Article
Language:English
Published: Cambridge, UK Cambridge University Press 01.09.2019
Subjects:
35th International Conference on Logic Programming
Algorithms
Boolean algebra
Computation
Declarative programming
Mathematical programming
Original Article
Reasoning
Solvers
Abstract solvers
Cautious reasoning
Answer Set Programming
ISSN:1471-0684, 1475-3081
Online Access:Get full text
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Summary:Abstract solvers are a method to formally analyze algorithms that have been profitably used for describing, comparing and composing solving techniques in various fields such as Propositional Satisfiability (SAT), Quantified SAT, Satisfiability Modulo Theories, Answer Set Programming (ASP), and Constraint ASP. In this paper, we design, implement and test novel abstract solutions for cautious reasoning tasks in ASP. We show how to improve the current abstract solvers for cautious reasoning in ASP with new techniques borrowed from backbone computation in SAT, in order to design new solving algorithms. By doing so, we also formally show that the algorithms for solving cautious reasoning tasks in ASP are strongly related to those for computing backbones of Boolean formulas. We implement some of the new solutions in the ASP solver wasp and show that their performance are comparable to state-of-the-art solutions on the benchmark problems from the past ASP Competitions.
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ISSN:1471-0684
1475-3081
DOI:10.1017/S1471068419000164