Cross-validated Z-residual diagnostics (generic)

Generic function for cross-validated Z-residual diagnostics. Method dispatch is based on the class of object. Methods are currently provided for survival models such as coxph and survreg.

Usage

CV.Zresidual(object, nfolds, foldlist = NULL, data = NULL, nrep = 1, ...)

Arguments

object: A fitted model object.
nfolds: Integer. Number of folds for cross-validation.
foldlist: Optional list specifying custom fold assignments. If NULL, folds are generated internally by the method.
data: Optional data frame used to refit the model during cross-validation, when required by the method.
nrep: Integer. Number of repeated cross-validations to perform. Default is 1.
...: Further arguments passed on to specific methods.

Value

An object whose structure depends on the underlying method, typically tagged with class "cvzresid" in addition to method-specific classes.

Examples

if (FALSE) { # \dontrun{
  library(survival)
  fit <- coxph(Surv(time, status) ~ age + sex, data = lung)
  out <- CV.Zresidual(fit, nfolds = 5, data = lung)
} # }