Grassberger's expectation of n^q

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Description

Expected value of n^q when n follows a Poisson law.

Usage

1
Enq(n, q)

Arguments

n

A positive integer vector.

q

A positive number.

Details

The expectation of n^q when n follows a Poisson ditribution has been derived by Grassberger (1988).

Value

A vector of the same length as x containing the transformed values.

Note

The function is computed using the beta.function.

Its value is 0 for n-q+1<0.

Author(s)

Eric Marcon <Eric.Marcon@ecofog.gf>

References

Grassberger, P. (1988). Finite sample corrections to entropy and dimension estimates. Physics Letters A 128(6-7): 369-373.

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