## 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:
  $Revision: 920852 $ $Date: 2010-03-09 13:53:44 +0100 (mar. 09 mars 2010) $

Method Summary
`double` `getExponent()` Get the exponent characterising the distribution.
`int` `getNumberOfElements()` Get the number of elements (e.g.
`void` `setExponent(double s)` Deprecated. as of v2.1
`void` `setNumberOfElements(int n)` Deprecated. as of v2.1

Methods inherited from interface org.apache.commons.math.distribution.IntegerDistribution
`cumulativeProbability, cumulativeProbability, inverseCumulativeProbability, probability`

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

Methods inherited from interface org.apache.commons.math.distribution.Distribution
`cumulativeProbability, cumulativeProbability`

Method Detail

### getNumberOfElements

    int getNumberOfElements()

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

  Returns:
    the number of elements

### setNumberOfElements

    @Deprecated
    void setNumberOfElements(int n)

  Deprecated. as of v2.1

  Set the number of elements (e.g. corpus size) for the distribution. The parameter value must be positive; otherwise an `IllegalArgumentException` is thrown.

  Parameters:
    `n` - the number of elements
  Throws:
    `IllegalArgumentException` - if n ≤ 0

### getExponent

    double getExponent()

  Get the exponent characterising the distribution.

  Returns:
    the exponent

### setExponent

    @Deprecated
    void setExponent(double s)

  Deprecated. as of v2.1

  Set the exponent characterising the distribution. The parameter value must be positive; otherwise an `IllegalArgumentException` is thrown.

  Parameters:
    `s` - the exponent
  Throws:
    `IllegalArgumentException` - if s ≤ 0.0

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