iniihg {CUB}

Moment estimate for the preference parameter of the IHG distribution

Description

Compute the moment estimate of the preference parameter of the IHG distribution. This preliminary estimate is set as initial value within the optimization procedure for an IHG model fitting the observed frequencies.

Usage

iniihg(m,freq)

Arguments

m

Number of ordinal categories

freq

Vector of the absolute frequency distribution of the categories

Value

Moment estimator of the preference parameter \theta.

References

D'Elia A. (2003). Modelling ranks using the inverse hypergeometric distribution, Statistical Modelling: an International Journal, 3, 65–78.

See Also

inibest, inibestcube

Examples

m<-9
freq<-c(70,51,48,38,29,23,12,10,5)
initheta<-iniihg(m,freq)