coxph.control {survival}R Documentation

Ancillary arguments for controling coxph fits

Description

This is used to set various numeric parameters controling a Cox model fit. Typically it would only be used in a call to coxph.

Usage

coxph.control(eps = 1e-09, toler.chol = .Machine$double.eps^0.75,
iter.max = 20, toler.inf = sqrt(eps), outer.max = 10)

Arguments

eps

Iteration continues until the relative change in the log partial likelihood is less than eps. Must be positive.

toler.chol

Tolerance for detection of singularity during a Cholesky decomposion of the variance matrix, i.e., for detecting a redundant predictor variable.

iter.max

Maximum number of iterations to attempt for convergence.

toler.inf

Tolerance criteria for the warning message about a possible infinite coefficient value.

outer.max

For a penalized coxph model, e.g. with pspline terms, there is an outer loop of iteration to determine the penalty parameters; maximum number of iterations for this outer loop.

Value

a list containing the values of each of the above constants

Author(s)

Terry Therneau

See Also

coxph


[Package survival version 2.36-14 Index]