Deprecated alias: kernel_unique() — kernel

Usage

kernel_unique(unit, K, name = "kernel")

Arguments

unit: Unquoted grouping column whose levels align with rownames(K).
K: Numeric dense positive-semidefinite covariance or correlation matrix aligned to the grouping levels.
name: Character scalar used as the extractor level, e.g. extract_Sigma(fit, level = "cross").

Value

A formula marker; never evaluated as a regular R function.

Details

Only kernel_unique() is deprecated; dense-kernel modelling and kernel_latent(), kernel_indep(), and kernel_dep() remain current. This alias is retained for old formulas. Use kernel_indep() for a standalone diagonal kernel covariance, or kernel_latent(..., unique = TRUE) when a single latent kernel tier should include its diagonal \(\boldsymbol\Psi\) companion.