Generate the PMML representation for a coxph object from the package survival.

Usage

# S3 method for class 'coxph'
pmml(
  model,
  model_name = "CoxPH_Survival_Regression_Model",
  app_name = "R PMML Generator - Package pmml",
  description = "CoxPH Survival Regression Model",
  copyright = NULL,
  model_version = NULL,
  transforms = NULL,
  missing_value_replacement = NULL,
  ...
)

Arguments

model: A coxph object.
model_name: A name to be given to the PMML model.
app_name: The name of the application that generated the PMML.
description: A descriptive text for the Header element of the PMML.
copyright: The copyright notice for the model.
model_version: A string specifying the model version.
transforms: Data transformations.
missing_value_replacement: Value to be used as the 'missingValueReplacement' attribute for all MiningFields.
...: Further arguments passed to or from other methods.

Details

A coxph object is the result of fitting a proportional hazards regression model, using the coxph function from the package survival. Although the survival package supports special terms "cluster", "tt" and "strata", only the special term "strata" is supported by the pmml package. Note that special term "strata" cannot be a multiplicative variable and only numeric risk regression is supported.

References

coxph: Survival Analysis

Author

Graham Williams