Summarize posterior draws (mean + quantiles)

Usage

.posterior_summarize(
  draws,
  probs = c(0.025, 0.5, 0.975),
  interval = "credible"
)

Arguments

draws

Numeric vector, matrix, or array with draws in last dimension.

probs

Numeric quantile probs.

interval

Character or NULL; interval type:

NULL: no interval
"credible" (default): equal-tailed quantile intervals
"hpd": highest posterior density intervals

Value

List with estimate, lower, upper, and q.

Details

The last dimension of draws is interpreted as the posterior-draw dimension. This helper collapses that dimension to posterior means and interval summaries, while preserving the leading dimensions of the input object. It is used throughout prediction and treatment-effect code to turn per-draw evaluations into reported posterior summaries.