Spatial-sign-based high-dimensional white noises test
| Autor: | Ping Zhao, Dachuan Chen, Zhaojun Wang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Statistical Theory and Related Fields, Pp 1-11 (2024) |
| Druh dokumentu: | article |
| ISSN: | 24754269 2475-4277 2475-4269 |
| DOI: | 10.1080/24754269.2024.2363715 |
| Popis: | In this study, we explore the problem of hypothesis testing for white noise in high-dimensional settings, where the dimension of the random vector may exceed the sample sizes. We introduce a test procedure based on spatial-sign for high-dimensional white noise testing. This new spatial-sign-based test statistic is designed to emulate the test statistic proposed by Paindaveine and Verdebout [(2016). On high-dimensional sign tests. Bernoulli, 22(3), 1745–1769.], but under a more generalized scatter matrix assumption. We establish the asymptotic null distribution and provide the asymptotic relative efficiency of our test in comparison with the test proposed by Feng et al. [(2022). Testing for high-dimensional white noise. arXiv:2211.02964.] under certain specific alternative hypotheses. Simulation studies further validate the efficiency and robustness of our test, particularly for heavy-tailed distributions. |
| Databáze: | Directory of Open Access Journals |
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