Chequia
Likelihood ratio type test statistics are suggested for detecting changes in means of coordinates of observed random vectors. It is supposed that changes in different coordinates need not to occur at the same time. Under the assumption of no change, asymptotic distributions of the proposed test statistics are given by distributions of maxima of χ2 random fields. High-level exceedance probabilities of non-homogeneous χ2 fields may be applied to get approximate asymptotic critical values.
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