Abstract
We study a natural Markov chain on \(\{0,1,\ldots ,n\}\) with eigenvectors the Hahn polynomials. This explicit diagonalization makes it possible to get sharp rates of convergence to stationarity. The process, the Burnside process, is a special case of the celebrated ‘Swendsen–Wang’ or ‘data augmentation’ algorithm. The description involves the beta-binomial distribution and Mallows model on permutations. It introduces a useful generalization of the Burnside process.
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