Class DfInconsistencyMeasure<S extends Formula>

  • Type Parameters:
    S - The specific type of formulas
    All Implemented Interfaces:
    PostulateEvaluatable<S>, InconsistencyMeasure<BeliefSet<S,​?>>

    public class DfInconsistencyMeasure<S extends Formula>
    extends BeliefSetInconsistencyMeasure<S>
    This class implements the family of "Measures of the Degree of Inconsistency" from [Mu,Liu,Jin, Bell. A syntax-based approach to measuring the degree of inconsistency for belief bases. IJAR 52(7), 2011.]
    Author:
    Matthias Thimm
    • Method Summary

      Modifier and Type Method Description
      private double[] getConsistentSetCounts​(java.util.Collection<S> inFormulas, java.util.Collection<S> restFormulas, java.util.Collection<java.util.Collection<S>> mus, int card)
      Computes the numbers of consistent subsets for cardinalities |inFormulas|...|inFormulas|+|restFormulas| (the knowledge base considered is inFormulas\cup restFormulas and the formulas in inFormulas have to be part of every considered subset).
      java.lang.Double inconsistencyMeasure​(java.util.Collection<S> formulas)
      This method measures the inconsistency of the given set of formulas.
      java.lang.String toString()  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
    • Field Detail

      • measureFunction

        private SimpleFunction<double[],​java.lang.Double> measureFunction
        The measure function used to aggregate the normalized cardinalities of minimal inconsistent subsets.
    • Constructor Detail

      • DfInconsistencyMeasure

        public DfInconsistencyMeasure​(SimpleFunction<double[],​java.lang.Double> measureFunction,
                                      MusEnumerator<S> enumerator)
        Creates a new inconsistency measure.
        Parameters:
        measureFunction - the measure function used to aggregate the normalized cardinalities of minimal inconsistent subsets.
        enumerator - some MUs enumerator
    • Method Detail

      • inconsistencyMeasure

        public java.lang.Double inconsistencyMeasure​(java.util.Collection<S> formulas)
        Description copied from class: BeliefSetInconsistencyMeasure
        This method measures the inconsistency of the given set of formulas.
        Specified by:
        inconsistencyMeasure in class BeliefSetInconsistencyMeasure<S extends Formula>
        Parameters:
        formulas - a collection of formulas.
        Returns:
        a Double indicating the degree of inconsistency.
      • getConsistentSetCounts

        private double[] getConsistentSetCounts​(java.util.Collection<S> inFormulas,
                                                java.util.Collection<S> restFormulas,
                                                java.util.Collection<java.util.Collection<S>> mus,
                                                int card)
        Computes the numbers of consistent subsets for cardinalities |inFormulas|...|inFormulas|+|restFormulas| (the knowledge base considered is inFormulas\cup restFormulas and the formulas in inFormulas have to be part of every considered subset).
        Parameters:
        inFormulas - a set of formulas that are in.
        restFormulas - the remaining formulas
        mus - the set of mus
        card - the cardinality of the whole knowledge base.
        Returns:
        the numbers of consistent subsets for cardinalities |inFormulas|...|inFormulas|+|restFormulas|
      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object