iniihg function

Moment estimate for the preference parameter of the IHG distribution

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.

iniihg(m,freq)

Arguments

• m: Number of ordinal categories
• freq: Vector of the absolute frequency distribution of the categories

Returns

Moment estimator of the preference parameter $\theta$.

Examples

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

References

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

See Also

inibest, inibestcube