phicom | R Documentation |
phi-component Models for ranking data. The distance-based models assume that rankings closer to the modal ranking are more likely to be observed. Phi-component models are extensions of distance-based models with Kendall's distance by allowing weights at different stages.
phicom(dset)
dset |
a ranking dataset (aggregated) |
Fit the phi-component models for the dataset and return a mle object. Standard methods on mle (e.g., @coef, @vcov) apply. The modal ranking and the Chi-square residual are given in the output.
Paul H. Lee and Philip L. H. Yu
Fligner, M. A., and Verducci, J. S. (1986) Distance based ranking models. Journal of the Royal Statistical Society Series B, 48(3), 359-369.
dbm
## 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 phi-component model ## phicom(test)
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