Pareto distribution 2026-10-07
In the shape–minimum parameterization, the density is , with . The survival function is for . Large shape concentrates the distribution near its lower bound. This convention is useful for uniform-Pareto conjugacy.
Multiplying the likelihood function by the Pareto distribution prior gives
The integral of this kernel is , so the normalized posterior distribution is
Thus it is . This proves uniform-Pareto conjugacy: applying Bayes theorem preserves the family of prior distributions.