rpart.exp
Initialization function for exponential fitting
Description
This function does the initialization step for rpart, when the response is a survival object. It rescales the data so as to have an exponential baseline hazard and then uses Poisson methods. This function would rarely if ever be called directly by a user.
Usage
rpart.exp(y, offset, parms, wt)
Arguments
y | the response, which will be of class |
offset | optional offset |
parms | parameters controlling the fit. This is a list with components |
wt | case weights, if present |
Value
a list with the necessary initialization components
Author(s)
Terry Therneau
See Also
Copyright (©) 1999–2012 R Foundation for Statistical Computing.
Licensed under the GNU General Public License.