com.sun.labs.minion
Interface ClusterStatistics

All Known Implementing Classes:

ClusterStatisticsImpl

public interface ClusterStatistics

An interface for getting a number of statistics relating to a cluster of documents.

See Also:

ResultsCluster

Method Summary

double	mean() Gets the mean distance of the cluster elements from the cluster centroid.
int	size() Gets the number of elements in the cluster.
double	variance() Gets the variance of the distance of the cluster elements from the cluster centroid.

Method Detail

size

int size()

Gets the number of elements in the cluster.

Returns:

the number of elements in this cluster

mean

double mean()

Gets the mean distance of the cluster elements from the cluster centroid.

Returns:

the mean distance of the cluster elements from the cluster centroid.

variance

double variance()

Gets the variance of the distance of the cluster elements from the cluster centroid.

Returns:

the variance of the distance of the cluster elements from the cluster centroid.