Package net.sf.tweety.lp.asp.beliefdynamics.revision

Class CredibilityRevision

  • All Implemented Interfaces:
    BaseRevisionOperator<ASPRule>
    public class CredibilityRevision
extends CredibilityRevisionNonIterative<ASPRule>
    Implements the credibility revision approach for ASP described in Kruempelmann et al. 2008. It extends the NonIterativeRevision interface by providing methods to receive the last calculated answer sets and it's projection. Internally the prefixes 'c__' 'neg_c' are used to prefix constants and the prefix 'p__' is used to prefix literals of the extended alphabet of the credibility program.
    Author:
    Tim Janus

    • Constructor Detail

      • CredibilityRevision

        public CredibilityRevision()
        Default Ctor: Do not forget to set the solver

      • CredibilityRevision

        public CredibilityRevision​(ASPSolver solver)
        Ctor: setting the solver at construction time
        Parameters:
        solver - Reference to the solver used for answer set generation.

      • CredibilityRevision

        public CredibilityRevision​(ASPSolver solver,
                           int maxInt)

    • Method Detail

      • getLastAnswerset

        public java.util.Collection<AnswerSet> getLastAnswerset()

      • getLastProjectedAnswerSet

        public java.util.Collection<AnswerSet> getLastProjectedAnswerSet()

      • revise

        public Program revise​(java.util.List<java.util.Collection<ASPRule>> ol)
        Description copied from class: CredibilityRevision
        Revises the belief bases in the orderer list into one belief base.
        Specified by:
        revise in class CredibilityRevision<ASPRule>
        Parameters:
        ol - An orderer list of belief bases which assumes that belief bases with a lower index have a lower priority.
        Returns:
        The belief base which is the result of the revision.

      • translate

        public Program translate​(java.util.List<Program> orderedList)
        Translates the given list of programs to the credibility logic program. The index of the program in the list represents its credibility, this means the first program in the list has lesser credibility than the second.
        Parameters:
        orderedList - The ordered list of extended logic programs which shall be translated.
        Returns:
        The credibility logic program representing the revision of the given ELPs.

      • main

        public static void main​(java.lang.String[] args)