Class CyclicIndependentDistanceDouble

  • All Implemented Interfaces:
    PermutationDistanceMeasurerDouble

    public final class CyclicIndependentDistanceDouble
    extends Object
    implements PermutationDistanceMeasurerDouble

    This class implements the concept of a cyclic independent distance measure. This is relevant if any rotation of the permutation has the same problem dependent interpretation.

    In this case, this class computes the minimum of the distance from permutation p1 to rotations of p2, where the underlying distance measure is passed as a parameter to the constructor.

    • Constructor Detail

      • CyclicIndependentDistanceDouble

        public CyclicIndependentDistanceDouble​(PermutationDistanceMeasurerDouble d)
        Constructs a distance measure for measuring distance with cyclic independence, such that distance = min_{i in [0,N)} distance(p1,rotate(p2,i))
        Parameters:
        d - A distance measure.
    • Method Detail

      • distancef

        public double distancef​(Permutation p1,
                                Permutation p2)
        Measures the distance between two permutations, with cyclic independence: distance = min_{i in [0,N)} distance(p1,rotate(p2,i))
        Specified by:
        distancef in interface PermutationDistanceMeasurerDouble
        Parameters:
        p1 - first permutation
        p2 - second permutation
        Returns:
        distance between p1 and p2
        Throws:
        IllegalArgumentException - if p1.length() is not equal to p2.length().