example_draws {posterior} | R Documentation |
Example draws
objects
Description
Objects for use in examples, vignettes, and tests.
Usage
example_draws(example = "eight_schools")
Arguments
example |
(string) The name of the example |
Details
The following example draws
objects are available.
eight_schools: A draws_array
object with 100 iterations
from each of 4 Markov chains obtained by fitting the eight schools model
described in Gelman et al. (2013) with Stan. The
variables are:
-
mu
: Overall mean of the eight schools -
tau
: Standard deviation between schools -
theta
: Individual means of each of the eight schools
multi_normal: A draws_array
object with 100 iterations from each of
the 4 Markov chains obtained by fitting a 3-dimensional multivariate normal
model to 100 simulated observations. The variables are:
-
mu
: Mean parameter vector of length 3 -
Sigma
: Covariance matrix of dimension 3 x 3
Value
A draws
object.
Note
These objects are only intended to be used in demonstrations and tests. They contain fewer iterations and chains than recommended for performing actual inference.
References
Andrew Gelman, John B. Carlin, Hal S. Stern, David B. Dunson, Aki Vehtari and Donald B. Rubin (2013). Bayesian Data Analysis, Third Edition. Chapman and Hall/CRC.
Examples
draws_eight_schools <- example_draws("eight_schools")
summarise_draws(draws_eight_schools)
draws_multi_normal <- example_draws("multi_normal")
summarise_draws(draws_multi_normal)