matr_glob function

Matrices to compute generalized logits

It provides the matrices used to compute a vector of generalized logits on the basis of a vector of probabilities according to the formula Colog(Map); this is an internal function.

matr_glob(l, type = "g")

Arguments

• l: number of response categories
• type: type of logit (l = local-logits, g = global-logits)

Returns

• Co: matrix of contrasts

• Ma: marginalization matrix

References

Colombi, R. and Forcina, A. (2001), Marginal regression models for the analysis of positive association of ordinal response variables, Biometrika, 88 , 1007-1019.

Glonek, G. F. V. and McCullagh, P. (1995), Multivariate logistic models, Journal of the Royal Statistical Society, Series B, 57 , 533-546.

Author(s)

Francesco Bartolucci - University of Perugia (IT)