init {icpack}

Generate a discrete IC object

Description

Generate a discrete IC object

Usage

init(Times, X, nt, tmax, nseg = 20, bdeg = 3, pord = 2, kappa = 1e-06)

Arguments

Times

The (possibly interval censored) survival data, in a matrix

X

The design matrix containing covariates

nt

The number of bins for discretization

tmax

The end of time domain (default 1.01 times largest observation)

nseg

The number of B-spline segments

bdeg

The degree of the B-splines

pord

The order of the differences used in the penalty

kappa

Ridge parameter (number)

Value

A list with items

data

List containing the original data as well as the binned data

bins

List with information on bins used

basis

List containing the B-spline matrix

start

List containing information on starting values

penalty

List containing Pdiff and Pridge

control

List with information on control of B-spline basis