Bernoulli: Independent Bernoulli Prior Distribution for Models
Description
Creates an object representing the prior distribution on
models for BAS.
Usage
Bernoulli(probs=.5)
Arguments
probs
a scalar or vector of prior inclusion
probabilities. If a scalar, the values is replicated for all
variables ans a 1 is added for the intercept. BAS checs to see if
the length is equal to the dimension of the parameter vector for the
full mo
Value
returns an object of class "prior", with the family and
hyerparameters.
Details
The independent Bernoulli prior distribution is a commonly used
prior in BMA, with the Uniform distribution a special case with probs=.5. If all
indicator variables have a independent Bernoulli
distributions with common probability probs, the distribution on model
size binomial(p, probs) distribution.