Package elki.clustering.dbscan.predicates

Class MinPtsCorePredicate

  • All Implemented Interfaces:
    CorePredicate<elki.database.ids.DBIDs>
    @Reference(authors="Martin Ester, Hans-Peter Kriegel, J\u00f6rg Sander, Xiaowei Xu",
           title="A Density-Based Algorithm for Discovering Clusters in Large Spatial Databases with Noise",
           booktitle="Proc. 2nd Int. Conf. on Knowledge Discovery and Data Mining (KDD \'96)",
           url="http://www.aaai.org/Library/KDD/1996/kdd96-037.php",
           bibkey="DBLP:conf/kdd/EsterKSX96")
public class MinPtsCorePredicate
extends java.lang.Object
implements CorePredicate<elki.database.ids.DBIDs>
    The DBSCAN default core point predicate -- having at least minpts neighbors.

    Reference:

    Martin Ester, Hans-Peter Kriegel, Jörg Sander, Xiaowei Xu
    A Density-Based Algorithm for Discovering Clusters in Large Spatial Databases with Noise
    Proc. 2nd Int. Conf. on Knowledge Discovery and Data Mining (KDD '96)

    Since:
    0.5.0
    Author:
    Erich Schubert

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static elki.logging.Logging LOG
      Class logger.
      protected int minpts
      The minpts parameter.

    • Constructor Summary

      Constructors 
      Constructor Description
      MinPtsCorePredicate​(int minpts)
      Default constructor.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean acceptsType​(elki.data.type.SimpleTypeInformation<? extends elki.database.ids.DBIDs> type)
      Test whether the neighborhood type T is accepted by this predicate.
      MinPtsCorePredicate.Instance instantiate​(elki.database.Database database)
      Instantiate for a database.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • LOG

        public static final elki.logging.Logging LOG
        Class logger.

      • minpts

        protected int minpts
        The minpts parameter.

    • Constructor Detail

      • MinPtsCorePredicate

        public MinPtsCorePredicate​(int minpts)
        Default constructor.
        Parameters:
        minpts - Minimum number of neighbors to be a core point.

    • Method Detail

      • instantiate

        public MinPtsCorePredicate.Instance instantiate​(elki.database.Database database)
        Description copied from interface: CorePredicate
        Instantiate for a database.
        Specified by:
        instantiate in interface CorePredicate<elki.database.ids.DBIDs>
        Parameters:
        database - Database to instantiate for
        Returns:
        Instance

      • acceptsType

        public boolean acceptsType​(elki.data.type.SimpleTypeInformation<? extends elki.database.ids.DBIDs> type)
        Description copied from interface: CorePredicate
        Test whether the neighborhood type T is accepted by this predicate.
        Specified by:
        acceptsType in interface CorePredicate<elki.database.ids.DBIDs>
        Parameters:
        type - Type information
        Returns:
        true when the type is accepted