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arXiv 1106.5891math.PR
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独立MRW过程的Marchenko Pastur型定理:经验谱测度的收敛性

Marchenko Pastur type theorem for independent MRW processes: convergence of the empirical spectral measure

Romain Allez, Rémi Rhodes, Vincent Vargas

摘要:

本文研究了由独立的多重分形随机游动过程组成的大经验协方差阵的谱分布的渐近性。当观测滞后收缩到0时,取渐近值。在这种情况下,我们表明,存在一个限制的谱分布的斯蒂尔切斯变换是唯一的特点,我们指定的方程。我们还通过数值模拟说明了我们的结果。

英文摘要:

We study the asymptotic of the spectral distribution for large empirical covariance matrices composed of independent Multifractal Random Walk processes. The asymptotic is taken as the observation lag shrinks to 0. In this setting, we show that there exists a limiting spectral distribution whose Stieltjes transform is uniquely characterized by equations which we specify. We also illustrate our results by numerical simulations.

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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