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arXiv 0810.1718math.STstat.TH
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长记忆平稳过程的随机抽样

Random sampling of long-memory stationary processe

Anne Philippe, Marie-Claude Viano

摘要:

本文研究了随机抽样后平稳过程的二阶性质。虽然短记忆过程总是产生短记忆过程,但我们证明了当采样律具有足够重的尾部时,长记忆过程可以消失。我们证明了在相当一般的条件下,谱密度的存在性是保持随机抽样。我们还研究了确定性抽样对季节性长记忆的影响。

英文摘要:

This paper investigates the second order properties of a stationary process after random sampling. While a short memory process gives always rise to a short memory one, we prove that long-memory can disappear when the sampling law has heavy enough tails. We prove that under rather general conditions the existence of the spectral density is preserved by random sampling. We also investigate the effects of deterministic sampling on seasonal long-memory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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