2021
DOI: 10.1002/asmb.2636
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Testing for parameter changes in linear state space models

Abstract: Linear state space models (LSSMs) provide a very general framework for multiple time series analysis. We propose a novel statistical procedure for testing validity of a LSSM which is focused on the detection of changes in parameters of the given LSSM. We derive the moments as well as the asymptotic distribution of the test statistic, and investigate the test size and the test power for changes in means, variances, and autoregressive coefficients. In the empirical application we test the validity of LSSMs appli… Show more

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Cited by 3 publications
(3 citation statements)
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“…For this purpose we elaborate both CUSUM and EWMA control charts for online detection of changes from AR(1) to ARMA(1,1) and vice versa. The control statistic for these charts is based on the testing approach elaborated by Golosnoy et al ( 2021 ). In the Monte Carlo simulation study we show that these changes (which are numerically rather small compared to the process variance) could be detected not immediately but only with some detection delay.…”
Section: Discussionmentioning
confidence: 99%
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“…For this purpose we elaborate both CUSUM and EWMA control charts for online detection of changes from AR(1) to ARMA(1,1) and vice versa. The control statistic for these charts is based on the testing approach elaborated by Golosnoy et al ( 2021 ). In the Monte Carlo simulation study we show that these changes (which are numerically rather small compared to the process variance) could be detected not immediately but only with some detection delay.…”
Section: Discussionmentioning
confidence: 99%
“…As we observe in ( 7 ), the MA(1) parameter influences linearly the covariance . For this reason we introduce another variable defined as Next, by making use of the ideas and the results in Golosnoy et al ( 2021 ) we derive the moments of which is given in the following proposition.…”
Section: The Measurement Error Modelmentioning
confidence: 99%
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