Class LID<O>

  • Type Parameters:
    O - Object type
    All Implemented Interfaces:
    Algorithm, OutlierAlgorithm

    @Title("LID: Intrinsic Dimensionality Outlier")
    @Reference(authors="Michael E. Houle, Erich Schubert, Arthur Zimek",
               title="On the Correlation Between Local Intrinsic Dimensionality and Outlierness",
               booktitle="Proc. 11th Int. Conf. Similarity Search and Applications (SISAP\'2018)",
               url="https://doi.org/10.1007/978-3-030-02224-2_14",
               bibkey="DBLP:conf/sisap/HouleSZ18")
    public class LID<O>
    extends java.lang.Object
    implements OutlierAlgorithm
    Use intrinsic dimensionality for outlier detection.

    Reference:

    Michael E. Houle, Erich Schubert, Arthur Zimek
    On the Correlation Between Local Intrinsic Dimensionality and Outlierness
    Proc. 11th Int. Conf. Similarity Search and Applications (SISAP'2018)

    This idea was also briefly explored before by Michael Houle, Arthur Zimek, Jonathan von Br√ľnken, et al.

    Since:
    0.7.0
    Author:
    Erich Schubert
    • Field Detail

      • LOG

        private static final Logging LOG
        Class logger.
      • distance

        protected Distance<? super O> distance
        Distance function used.
      • kplus

        protected int kplus
        Number of neighbors to use + query point.
    • Constructor Detail

      • LID

        public LID​(Distance<? super O> distance,
                   int k,
                   IntrinsicDimensionalityEstimator<? super O> estimator)
        Constructor.
        Parameters:
        distance - Distance function
        k - Neighborhood size
        estimator - Estimator for intrinsic dimensionality
    • Method Detail

      • getInputTypeRestriction

        public TypeInformation[] getInputTypeRestriction()
        Description copied from interface: Algorithm
        Get the input type restriction used for negotiating the data query.
        Specified by:
        getInputTypeRestriction in interface Algorithm
        Returns:
        Type restriction
      • run

        public OutlierResult run​(Relation<O> relation)
        Run the algorithm
        Parameters:
        relation - Data relation
        Returns:
        Outlier result