hhjorth: Log Hazard Function for a Hjorth Process

In event: Event History Procedures and Models

Log Hazard Function for a Hjorth Process

Description

These functions provide information about the Hjorth distribution with location parameter equal to m, dispersion equal to s, and family parameter equal to f: log hazard. (See 'rmutil' for the d/p/q/r boxcox functions density, cumulative distribution, quantiles, and random generation).

The Hjorth distribution has density

f(y) = (1+\sigma y)^{-\nu/\sigma} \exp(-(y/\mu)^2/2) (\frac{y}{\mu^2}+\frac{\nu}{1+\sigma y})

where \mu is the location parameter of the distribution, \sigma is the dispersion, and \nu is the family parameter.

Usage

hhjorth(y, m, s, f)

Arguments

y	vector of responses.
m	vector of location parameters.
s	vector of dispersion parameters.
f	vector of family parameters.

Author(s)

J.K. Lindsey

Examples

hhjorth(5, 5, 5, 2)

event documentation built on Feb. 16, 2026, 5:08 p.m.