fit-method-init: Extract user-specified initial values

In stan-dev/cmdstanr: R Interface to 'CmdStan'

Extract user-specified initial values

Description

Return user-specified initial values. If the user provided initial values files or R objects (list of lists or function) via the init argument when fitting the model then these are returned (always in the list of lists format). Currently it is not possible to extract initial values generated automatically by CmdStan, although CmdStan may support this in the future.

Usage

init()

Value

A list of lists. See Examples.

See Also

CmdStanMCMC, CmdStanMLE, CmdStanVB

Examples

## Not run: 
init_fun <- function() list(alpha = rnorm(1), beta = rnorm(3))
fit <- cmdstanr_example("logistic", init = init_fun, chains = 2)
str(fit$init())

# partial inits (only specifying for a subset of parameters)
init_list <- list(
  list(mu = 10, tau = 2),
  list(mu = -10, tau = 1)
)
fit <- cmdstanr_example("schools_ncp", init = init_list, chains = 2, adapt_delta = 0.9)

# only user-specified inits returned
str(fit$init())

## End(Not run)

stan-dev/cmdstanr documentation built on April 21, 2024, 5:38 a.m.