plot.tune.ahazpen {ahaz} | R Documentation |
Plot a tune.ahazpen object
Description
Plot, as a function of the penalty parameter, the curve of tuning scores produced when tuning a penalized semiparametric additive hazards model.
Usage
## S3 method for class 'tune.ahazpen'
plot(x, df = TRUE, ...)
Arguments
x |
The result of a call to |
df |
Display number of nonzero parameters in top margin. Default
is |
... |
Additional graphical arguments passed to the |
Details
A plot is produced displaying the tuning score for each value
of penalty parameter
(alongside upper and lower standard deviation curves, if cross-validation
has been used). The value of
lambda
which minimizes the estimated tuning score
is indicated with a dashed vertical line.
See Also
ahazpen
, tune.ahazpen
, print.tune.ahazpen
.
Examples
data(sorlie)
# Break ties
set.seed(10101)
time <- sorlie$time+runif(nrow(sorlie))*1e-2
# Survival data + covariates
surv <- Surv(time,sorlie$status)
X <- as.matrix(sorlie[,3:ncol(sorlie)])
# Do 10 fold cross-validation
set.seed(10101)
tune.fit <- tune.ahazpen(surv, X, penalty="lasso",
dfmax=50, tune = cv.control(nfolds=10))
plot(tune.fit)
[Package ahaz version 1.15 Index]