pmr (version 1.2.5)

pl: The Luce Models

Description

The Luce Models for ranking data. The Luce models assumed that the rankings of the items are proportional to the item parameters.

Usage

pl(dset)

Arguments

dset

a ranking dataset (aggregated)

Details

Fit the Luce models for the dataset and return a mle object. Standard methods on mle (e.g., @coef, @vcov) apply. The Chi-square residual are given in the output.

References

Luce, R. D. (1959) Individual Choice Behavior. New York: Wiley.

See Also

rinv

Examples

## create an artificial dataset
X1 <- c(1,1,2,2,3,3)
X2 <- c(2,3,1,3,1,2)
X3 <- c(3,2,3,1,2,1)
n <- c(6,5,4,3,2,1)
test <- data.frame(X1,X2,X3,n)

## fit the Luce model
## pl(test)