Gaussian Processes indexed on the symmetric group: prediction and learning

16 Mar 2018  ·  François Bachoc, Baptiste Broto, Fabrice Gamboa, Jean-Michel Loubes ·

In the framework of the supervised learning of a real function defined on a space X , the so called Kriging method stands on a real Gaussian field defined on X. The Euclidean case is well known and has been widely studied... In this paper, we explore the less classical case where X is the non commutative finite group of permutations. In this setting, we propose and study an harmonic analysis of the covariance operators that enables to consider Gaussian processes models and forecasting issues. Our theory is motivated by statistical ranking problems. read more

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