bundles / scipy latest / scipy / stats / _discrete_distns / zipf_gen

class

`scipy.stats._discrete_distns:zipf_gen`

source: /scipy/stats/_discrete_distns.py :1301

Signature

   class     zipf_gen (    a    =  0   ,    b    =  inf   ,    name    =  None   ,    badvalue    =  None   ,    moment_tol    =  1e-08   ,    values    =  None   ,    inc    =  1   ,    longname    =  None   ,    shapes    =  None   ,    seed    =  None     )

Members

Summary

A Zipf (Zeta) discrete random variable.

Extended Summary

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Notes

The probability mass function for zipf is:

f (k, a) = \frac{1}{ζ ( a ) k ^{a}}

for $k \geq 1$ , $a > 1$ .

zipf takes $a > 1$ as shape parameter. $ζ$ is the Riemann zeta function (scipy.special.zeta)

The Zipf distribution is also known as the zeta distribution, which is a special case of the Zipfian distribution (zipfian).

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See also

zipfian

Aliases

scipy.stats._discrete_distns.zipf_gen