de.lmu.ifi.dbs.elki.algorithm.clustering.correlation
Class FourC<V extends NumberVector<V,?>>

java.lang.Object
  de.lmu.ifi.dbs.elki.algorithm.AbstractAlgorithm<R>
      de.lmu.ifi.dbs.elki.algorithm.clustering.AbstractProjectedDBSCAN<Clustering<Model>,V>
          de.lmu.ifi.dbs.elki.algorithm.clustering.correlation.FourC<V>

Type Parameters:

V - type of NumberVector handled by this Algorithm

All Implemented Interfaces:

Algorithm, ClusteringAlgorithm<Clustering<Model>>, InspectionUtilFrequentlyScanned, Parameterizable

@Title(value="4C: Computing Correlation Connected Clusters")
@Description(value="4C identifies local subgroups of data objects sharing a uniform correlation. The algorithm is based on a combination of PCA and density-based clustering (DBSCAN).")
@Reference(authors="C. B\u00f6hm, K. Kailing, P. Kr\u00f6ger, A. Zimek",
           title="Computing Clusters of Correlation Connected Objects",
           booktitle="Proc. ACM SIGMOD Int. Conf. on Management of Data, Paris, France, 2004, 455-466",
           url="http://dx.doi.org/10.1145/1007568.1007620")
public class FourC<V extends NumberVector<V,?>>
extends AbstractProjectedDBSCAN<Clustering<Model>,V>

4C identifies local subgroups of data objects sharing a uniform correlation. The algorithm is based on a combination of PCA and density-based clustering (DBSCAN).

Reference: Christian Böhm, Karin Kailing, Peer Kröger, Arthur Zimek: Computing Clusters of Correlation Connected Objects.
In Proc. ACM SIGMOD Int. Conf. on Management of Data, Paris, France, 2004.

Nested Class Summary

static class

FourC.Parameterizer<O extends NumberVector<O,?>> Parameterization class.

Field Summary

private static Logging

logger The logger for this class.

Fields inherited from class de.lmu.ifi.dbs.elki.algorithm.clustering.AbstractProjectedDBSCAN

epsilon, EPSILON_ID, INNER_DISTANCE_FUNCTION_ID, LAMBDA_ID, minpts, MINPTS_ID, OUTER_DISTANCE_FUNCTION_ID

Constructor Summary

FourC(DoubleDistance epsilon, int minpts, LocallyWeightedDistanceFunction<V> distanceFunction, int lambda)
Constructor.

Method Summary

TypeInformation[]	getInputTypeRestriction() Get the input type restriction used for negotiating the data query.
protected Logging	getLogger() Get the (STATIC) logger for this class.
String	getLongResultName() Return the long result name.
String	getShortResultName() Return the short result name.

Methods inherited from class de.lmu.ifi.dbs.elki.algorithm.clustering.AbstractProjectedDBSCAN

expandCluster, run

Methods inherited from class de.lmu.ifi.dbs.elki.algorithm.AbstractAlgorithm

makeParameterDistanceFunction, run

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.lmu.ifi.dbs.elki.algorithm.clustering.ClusteringAlgorithm

run

Field Detail

logger

private static final Logging logger

The logger for this class.

Constructor Detail

FourC

public FourC(DoubleDistance epsilon,
             int minpts,
             LocallyWeightedDistanceFunction<V> distanceFunction,
             int lambda)

Constructor.

Parameters:

epsilon - Epsilon value

minpts - MinPts value

distanceFunction - Distance function

lambda - Lambda value

Method Detail

getLongResultName

public String getLongResultName()

Description copied from class: AbstractProjectedDBSCAN

Return the long result name.

Specified by:

getLongResultName in class AbstractProjectedDBSCAN<Clustering<Model>,V extends NumberVector<V,?>>

Returns:

Long name for result

getShortResultName

public String getShortResultName()

Description copied from class: AbstractProjectedDBSCAN

Return the short result name.

Specified by:

getShortResultName in class AbstractProjectedDBSCAN<Clustering<Model>,V extends NumberVector<V,?>>

Returns:

Short name for result

getInputTypeRestriction

public TypeInformation[] getInputTypeRestriction()

Description copied from class: AbstractAlgorithm

Get the input type restriction used for negotiating the data query.

Specified by:

getInputTypeRestriction in interface Algorithm

Overrides:

getInputTypeRestriction in class AbstractProjectedDBSCAN<Clustering<Model>,V extends NumberVector<V,?>>

Returns:

Type restriction

getLogger

protected Logging getLogger()

Description copied from class: AbstractAlgorithm

Get the (STATIC) logger for this class.

Specified by:

getLogger in class AbstractAlgorithm<Clustering<Model>>

Returns:

the static logger