Bernoulli: Independent Bernoulli Prior Distribution for Models
Description
Creates an object representing the prior distribution on models for BAS.
Usage
Bernoulli(probs = 0.5)
Value
returns an object of class "prior", with the family and
hyperparameters.
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 checks to see if the length is equal to the dimension of the
parameter vector for the full model and adds a 1 to include the intercept.
Author
Merlise Clyde
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.
See Also
bas.lm,
beta.binomial,uniform
Other priors modelpriors:
Bernoulli.heredity(),
beta.binomial(),
tr.beta.binomial(),
tr.poisson(),
tr.power.prior(),
uniform()