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arXiv 0807.4853math.STstat.TH
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随机场中长程相关的V/S检验

The V/S test of long-range dependence in random fields

Frédéric Lavancier

摘要:

最近,Giraitis等人。(2003,[10])提出了$V/S$统计量来测试随机序列中的长记忆。我们将此统计量推广到随机场的情形。原假设与短记忆随机场有关,而替代假设包含一个非常大的长记忆随机场族。与以往大多数研究长程相关性的工作相反,没有对强相关性的各向同性进行任何假设。一些模拟,以评估的权力的测试,根据存在的长记忆的种类。

英文摘要:

Recently, Giraitis et al. (2003, [10]) proposed the $V/S$ statistic for testing long memory in random sequences. We generalize this statistic to the setting of random fields. The null hypothesis is concerned with short memory random fields while the alternative contains a very large family of long memory random fields. Contrary to most of the previous works dealing with long-range dependence, no assumption is made about the isotropy of the strong dependence. Some simulations are presented in order to assess the power of the test according to the kind of long memory in presence.

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