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    Multivariate extensions of the Anderson-Darling process

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    We give the explicit Karhunen-Loeve expansion of a family of centered Gaussian processes including the Anderson-Darling process. An application is provided through the description of a Cramer-von Mises type test of independence.Anderson-Darling statistic Independence test Karhunen-Loeve expansion Legendre functions

    Decompositions of stochastic processes based on irreducible group representations

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    27 pagesLet G be a topological compact group acting on some space Y. We study a decomposition of Y-indexed stochastic processes, based on the orthogonality relations between the characters of the irreducible representations of G. In the particular case of a Gaussian process with a G-invariant law, such a decomposition gives a very general explanation of a classic identity in law - between quadratic functionals of a Brownian bridge - due to Watson (1961). Several relations with Karhunen-Loève expansions are discussed, and some applications and extensions are given - in particular related to Gaussian processes indexed by a torus
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