shifted_gamma: A shifted gamma prior
In epidemia: Modeling of Epidemics using Hierarchical Bayesian Models

Description Usage Arguments Details Value References

A gamma prior distribution which can be shifted.

1	shifted_gamma(shape = 1, scale = 1, shift = 0, autoscale = TRUE)

`shape, scale`	Sets the shape and scale parameters of the Gamma prior.
`shift`	The Gamma prior can be shifted to allow for positive support.
`autoscale`	Same as in `priors`.

rstanarm provides a set of distributions (see priors) which can be used for the priors on regression parameters. Intuitively, non-pharmaceutical interventions are unlikely to a-priori cause a large increase in the reproduction number. A shifted gamma prior can be used to model this idea, and has been used in \insertCiteFlaxman2020;textualepidemia. shifted_gamma can be used as the prior argument to epim. This specified a shifted gamma prior on the negative of the regression parameters. i.e. if there is no shift, the support is on the negative half of the real line.

A named list to be parsed internally by epim.

\insertAllCited

epidemia documentation built on Oct. 25, 2021, 9:09 a.m.