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bayesforecast (version 1.0.1)

inverse.gamma: Define an inverse gamma prior distribution

Description

inverse.gamma(shape,rate)

Usage

inverse.gamma(shape = 2, rate = 1)

Arguments

shape

the form parameter alpha in gamma distribution

rate

the rate parameter beta in gamma distribution

Value

a numerical vector interpreted as a prior in Stan

Details

Define a inverse.gamma prior distribution using the hyper parameters shape and rate, by default an inverse.gamma(2,1) distribution is return.

If sigma has a gamma distribution then 1/sigma has n inverse gamma distribution. The rate parameter is the inverse of an scale parameter.