Gumbel (max.) Distribution#

The Gumbel (max.) distribution is a two-parameter continuous probability distribution. The table below summarizes some important aspects of the distribution.

Notation

\(X \sim \mathrm{Gumbel}(\mu, \beta)\)

Parameters

\(\mu \in \mathbb{R}\) (location parameter)

\(\beta > 0\) (scale parameter)

Support

\(\mathcal{D}_X = (-\infty, \infty)\)

PDF

\(f_X (x; \mu, \beta) = \frac{1}{\beta} \exp{- \left[ \frac{x - \mu}{\beta} + \exp{-\left(\frac{x - \mu}{\beta} \right)} \right]}\)

CDF

\(F_X (x; \mu, \beta) = \exp{-\left[ \exp{- \left(\frac{x - \mu}{\beta} \right)} \right]}\)

ICDF

\(F^{-1}_X (x; \mu, \beta) = \mu + \beta \ln{(\ln{x})}\)

The plots of probability density functions (PDFs), sample histogram (of \(5'000\) points), cumulative distribution functions (CDFs), and inverse cumulative distribution functions (ICDFs) for different parameter values are shown below.

../../_images/gumbel_2_0.png