Abstract
In this paper, we propose a series of bias-reduced moment estimators for the Population Spectral Distribution (PSD) of large covariance matrices, which are fundamentally important for modern high-dimensional statistics. In addition, we derive the limiting distributions of these moment estimators, which are then adopted to test the order of PSDs. The simulation study demonstrates the desirable performance of the order test in conjunction with the proposed moment estimators for the PSD of large covariance matrices.
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Acknowledgements
We would like to thank Dr. S. Ejaz Ahmed for organizing this Springer refereed volume. We appreciate his tremendous efforts. Comments by the anonymous referees led to substantial improvement of the manuscript. Yingli Qin’s research is partly supported by Research Incentive Fund grant No. 115953 and Natural Sciences and Engineering Research Council of Canada (NSERC) grant No. RGPIN-2016-03890. Weiming Li’s research is supported by National Natural Science Foundation of China, No. 11401037 and Program for IRTSHUFE.
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Qin, Y., Li, W. (2017). Bias-Reduced Moment Estimators of Population Spectral Distribution and Their Applications. In: Ahmed, S. (eds) Big and Complex Data Analysis. Contributions to Statistics. Springer, Cham. https://doi.org/10.1007/978-3-319-41573-4_6
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DOI: https://doi.org/10.1007/978-3-319-41573-4_6
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