Extract inverse metric (mass matrix) after MCMC — fit-method-inv_metric • cmdstanr

Extract the inverse metric (mass matrix) for each MCMC chain.

inv_metric(matrix = TRUE)

Arguments

matrix: (logical) If a diagonal metric was used, setting matrix = FALSE returns a list containing just the diagonals of the matrices instead of the full matrices. Setting matrix = FALSE has no effect for dense metrics.

Value

A list of length equal to the number of MCMC chains. See the matrix argument for details.

See also

Examples

if (FALSE) { # \dontrun{
fit <- cmdstanr_example("logistic")
fit$inv_metric()
fit$inv_metric(matrix=FALSE)

fit <- cmdstanr_example("logistic", metric = "dense_e")
fit$inv_metric()
} # }