npsurv (version 0.4-0.1)

logLikuh: Computes the Log-likelihood Value of a U-shaped Hazard Function

Description

logLikuh returns the log-likelihood value of a U-shaped hazard function, given a data set.

Usage

logLikuh(h, data)

Arguments

h

an object of class uh.

data

numeric vector or matrix for exact or interval-censored observations, or an object of class icendata.

Value

Log-likelihood value evaluated at h, given data.

References

Wang, Y. and Fani, S. (2017). Nonparametric maximum likelihood computation of a U-shaped hazard function. Statistics and Computing, (in print).

See Also

Uhaz, icendata, plot.uh

Examples

# NOT RUN {
data(ap)
(h0 = uh(.2, NULL, NULL, NULL, NULL, 15, 1))   # Uniform hazard
plot(h0, ylim=c(0,.3))
logLikuh(h0, ap)

r = Uhaz(ap, deg=2)
r$ll
logLikuh(r$h, ap)
plot(r$h, add=TRUE, col="red3")
# }