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On estimation in hierarchical models with block circular covariance structures

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  1. Article

    Open Access

    On properties of Toeplitz-type covariance matrices in models with nested random effects

    Models that capture symmetries present in the data have been widely used in different applications, with early examples from psychometric and medical research. The aim of this article is to study a random effe...

    Yuli Liang, Dietrich von Rosen, Tatjana von Rosen in Statistical Papers (2021)

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  2. Article

    Open Access

    Testing covariance structures belonging to a quadratic subspace under a doubly multivariate model

    A hypothesis related to the block structure of a covariance matrix under the doubly multivariate normal model is studied. It is assumed that the block structure of the covariance matrix belongs to a quadratic ...

    Katarzyna Filipiak, Mateusz John, Yuli Liang in TEST (2024)

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