Plot Validation Results for Cox_MDTL Object

Plots the validation performance against eta for MDTL estimates. Compares the "Integrated" estimator (solid line) against the "Internal" baseline (dotted line, eta=0).

Usage

# S3 method for class 'cox_MDTL'
plot(
  x,
  test_z = NULL,
  test_time = NULL,
  test_delta = NULL,
  test_stratum = NULL,
  criteria = c("loss", "CIndex"),
  ...
)

Arguments

x

An object of class "Cox_MDTL".

test_z

Matrix of test covariates.

test_time

Vector of test survival times.

test_delta

Vector of test status indicators.

test_stratum

Vector of test strata.

criteria

Metric to plot: "loss" or "CIndex".

...

Additional arguments.

Value

A ggplot object.

Examples

if (FALSE) { # \dontrun{
data(ExampleData_lowdim)
train_dat_lowdim <- ExampleData_lowdim$train
test_dat_lowdim <- ExampleData_lowdim$test
beta_external_lowdim <- ExampleData_lowdim$beta_external_fair

eta_list <- generate_eta(method = "exponential", n = 50, max_eta = 5)
cox_MDTL_est <- cox_MDTL(z = train_dat_lowdim$z,
                         delta = train_dat_lowdim$status,
                         time = train_dat_lowdim$time,
                         beta = beta_external_lowdim,
                         vcov = NULL,
                         etas = eta_list)

plot.cox_MDTL(cox_MDTL_est,
              test_z = test_dat_lowdim$z,
              test_time = test_dat_lowdim$time,
              test_delta = test_dat_lowdim$status,
              test_stratum = test_dat_lowdim$stratum,
              criteria = "CIndex")
} # }