Description Usage Arguments Details Value Examples
Density function for the Marshall-Olkin Extended Zipf distribution with parameters α and β.
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x |
Vector of positive integer values. |
alpha |
Value of the α parameter (α > 1 ). |
beta |
Value of the β parameter (β > 0 ). |
log |
Logical; if TRUE, probabilities p are given as log(p). |
show.plot |
Logical; if TRUE shows the plot of the distibution (default = FALSE). |
The probability mass function at a positive integer value x of the MOEZipf distribution with parameters α and β is computed as follows:
p(x | α, β) = \frac{x^{-α} β ζ(α) }{[ζ(α) - \bar{β} ζ (α, x)] [ζ (α) - \bar{β} ζ (α, x + 1)]}, α > 1, β > 0,
where ζ(α) is the Riemann-zeta function at α, ζ(α, x) is the Hurtwitz zeta function with arguments α and x, and \bar{β} = 1 - β.
The probability associated to each value in vector x
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