Audit transfer to held-out sampling domains — audit

For each successful fit with assessment rows, the function contrasts mapping error in the analysis and assessment sets and records the fraction of held- out samples mapped to units unoccupied during training. These quantities describe domain shift; they do not establish ecological transferability on their own.

Usage

audit_transfer(ensemble)

Arguments

ensemble: A fitted som_ensemble containing non-empty assessment sets.

Value

A som_transfer_audit object with fit-level transfer diagnostics.

Examples

data <- simulate_som_scenario("gradient", n = 60, p = 3, seed = 7)
splits <- som_resamples(data, method = "leave_domain_out")
specification <- som_spec(c(3, 2), seeds = 1, rlen = 10, k = 2)
ensemble <- fit_som_ensemble(data, specification, splits)
audit_transfer(ensemble)
#> <som_transfer_audit>
#>   successful transfers: 3 
#>   median distance ratio: 13.274 
#>   median held-out coverage: 1.000 
#>   median new-unit rate : 0.000