distfamily: Preparation of family object of class 'disttree.family' as...

In disttree: Trees and Forests for Distributional Regression

Description

The function distfamily prepares the required family object that is employed within distfit to estimate the parameters of the specified distribution family.

Usage

  distfamily(family, bd = NULL, censpoint = NULL) 

Arguments

family	can be one of the following: gamlss.family object, gamlss.family function, character string with the name of a gamlss.family object, function generating a family object with the required information about the distribution, character string with the name of a function generating a family object with the required information about the distribution, list with the required information about the distribution, character string with the name of a distribution for which a family generating function is provided in disttree
bd	optional argument for binomial distributions specifying the binomial denominator
censpoint	censoring point for a censored gamlss.family object

Details

The function distfamily is applied within distfit, disttree, and distforest. It generates a family object of class disttree.family. If family is a gamlss.family object the function distfamily_gamlss is called within distfamily.

Value

distfamily returns a family object of class disttree.family in form of a list with the following components:

family.name	character string with the name of the specified distribution family
ddist	density function of the specified distribution family.
sdist	score function (1st partial derivatives) of the specified distribution family.
hdist	hessian function (2nd partial derivatives) of the specified distribution family.
pdist	distribution function of the specified distribution family.
qdist	quantile function of the specified distribution family.
rdist	random generation function of the specified distribution family.
link	character strings of the applied link functions.
linkfun	link functions.
linkinv	inverse link functions.
linkinvdr	derivative of the inverse link functions.
startfun	function generating the starting values for the employed optimization.
mle	logical. Indicates whether a closed form solution exists (TRUE) for the maximum-likelihood optimization or whether a numerical optimization should be employed to estimate parameters (FALSE).
gamlssobj	logical. Indicates whether the family has been obtained from a gamlss.family object.
censored	logical. Indicates whether the specified distribution family is censored.
censpoint	numeric. Censoring point (only if censored and gamlssobj),
censtype	character. Type of censoring ("left", "right") (only if censored and gamlssobj).

References

Stasinopoulos DM, Rigby RA (2007). Generalized Additive Models for Location Scale and Shape (GAMLSS) in R, Journal of Statistical Software, 23(7), 1-46. doi: 10.18637/jss.v023.i07

Venables WN, Ripley BD (2002). Modern Applied Statistics with S. 4th Edition. Springer-Verlag, New York.

See Also

disttree.family, gamlss.family

Examples

library(disttree)
family <- distfamily(family = NO())

disttree documentation built on Aug. 14, 2019, 3 a.m.