org.apache.commons.math.distribution
Interface ZipfDistribution

All Superinterfaces:

DiscreteDistribution, Distribution, IntegerDistribution

All Known Implementing Classes:

ZipfDistributionImpl

public interface ZipfDistribution
extends IntegerDistribution

The Zipf (or zeta) Distribution.

References:

• Zipf Distribution

Version:

$Id: ZipfDistribution.java 1131229 2011-06-03 20:49:25Z luc $

Method Summary

double	getExponent() Get the exponent characterising the distribution.
int	getNumberOfElements() Get the number of elements (e.g. corpus size) for the distribution.

Methods inherited from interface org.apache.commons.math.distribution.IntegerDistribution

cumulativeProbability, cumulativeProbability, inverseCumulativeProbability, probability, reseedRandomGenerator, sample, sample

Methods inherited from interface org.apache.commons.math.distribution.DiscreteDistribution

probability

Methods inherited from interface org.apache.commons.math.distribution.Distribution

cumulativeProbability, cumulativeProbability, getNumericalMean, getNumericalVariance, isSupportConnected, isSupportLowerBoundInclusive, isSupportUpperBoundInclusive

Method Detail

getNumberOfElements

int getNumberOfElements()

Get the number of elements (e.g. corpus size) for the distribution.

Returns:

the number of elements

getExponent

double getExponent()

Get the exponent characterising the distribution.

Returns:

the exponent