Package oracle.spatial.network.lod

Class SilhouetteClusterEvaluator

java.lang.Object

oracle.spatial.network.lod.SilhouetteClusterEvaluator

All Implemented Interfaces:

ClusterEvaluator

public class SilhouetteClusterEvaluator
extends java.lang.Object
implements ClusterEvaluator

This implementation uses the Silhouette method to measure cluster quality. The returned score lies between -1 and 1. The closer the score to 1, the better the cluster quality. http://en.wikipedia.org/wiki/Silhouette_(clustering)

Since:

release specific (what release of product did this appear in)

Constructor Summary

Constructors

Constructor	Description
SilhouetteClusterEvaluator(NetworkExplorer ne, int userDataCategory, int xCoordUserDataIndex, int yCoordUserDataIndex, int geometryUserDataIndex)

Method Summary

Modifier and Type	Method	Description
double	evaluate(PointOnNet[] points, ClusterResult clusterResult)

Methods inherited from class java.lang.Object

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

Constructor Detail

SilhouetteClusterEvaluator

public SilhouetteClusterEvaluator(NetworkExplorer ne,
                                  int userDataCategory,
                                  int xCoordUserDataIndex,
                                  int yCoordUserDataIndex,
                                  int geometryUserDataIndex)

Method Detail

evaluate

public double evaluate(PointOnNet[] points,
                       ClusterResult clusterResult)
                throws LODNetworkException

Specified by:

evaluate in interface ClusterEvaluator

Throws:

LODNetworkException