Conditional independence relations and log-linear models for random permutations

Details Conditional independence relations and log-linear models for random permutations Conditional independence relations and log-linear models for random permutations

2007-11-16

arxiv.org/abs/0711.2564v1

Mathematics

Statistics Theory

25 pages

Scientific paper

We propose a new class of models for random permutations, which we call log-linear models, by the analogy with log-linear models used in the analysis of contingency tables. As a special case, we study the family of all Luce-decomposable distributions, and the family of those random permutations, for which the distribution of both the permutation and its inverse is Luce-decomposable. We show that these latter models can be described by conditional independence relations. We calculate the number of free parameters in these models, and describe an iterative algorithm for maximum likelihood estimation, which enables us to test if a set of data satisfies the conditional independence relations or not.

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