Bootstrap stability summaries for an effect operator

Bootstrap stability summaries for an effect operator

Usage

# S3 method for class 'effect_operator'
bootstrap(
  x,
  nboot,
  resample = c("auto", "rows", "subject"),
  parallel = FALSE,
  seed = NULL,
  ...
)

Arguments

x

An effect_operator.

nboot

Number of bootstrap resamples.

resample

Resampling unit. Use "subject" for grouped repeated-measures data or "rows" for observation-level resampling; "auto" selects subject blocks when available.

parallel

Logical; if TRUE, use future.apply.

seed

Optional random seed.

...

Reserved for future extensions.

Value

A bootstrap result object with loading and singular-value summaries. n_failed records the number of resamples that produced a rank-deficient or otherwise unfittable design; failed draws are skipped.

Note

Loadings are currently aligned to the reference solution by a per-axis sign flip. When more than one effect axis is retained, axes can rotate between bootstrap draws and a Procrustes-based alignment (see PRD section 10) would give tighter stability summaries. Not implemented in this pass.