恢复协方差阵谱的非渐近迭代方法
Recover the spectrum of covariance matrix: a non-asymptotic iterative method
摘要:
众所周知,样本协方差在谱中具有一致性偏差,例如Wishart矩阵的谱服从Marchenko-Pastur定律。在这项工作中,我们引入了一个迭代算法“浓度”,积极消除这种偏见,并恢复真正的光谱小,中等尺寸。
英文摘要:
It is well known the sample covariance has a consistent bias in the spectrum, for example spectrum of Wishart matrix follows the Marchenko-Pastur law. We in this work introduce an iterative algorithm 'Concent' that actively eliminate this bias and recover the true spectrum for small and moderate dimensions.
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。