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Estimation of the linkage matrix in O-GARCH model and GO-GARCH model
Zheng, Lingyu
Zheng, Lingyu
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Thesis/Dissertation
Date
2010
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Statistics
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http://dx.doi.org/10.34944/dspace/3922
Abstract
We propose new estimation methods for the factor loading matrix in modeling multivariate volatility processes. The key step of the methods is based on the weighted scatter estimators, which does not involve optimizing any objective function and was embedded with robust estimation properties. The method can therefore be easily applied to high-dimensional systems without running into computational problems. The estimation is proved to be consistent and the asymptotic distribution is derived. We compare the performance with other estimation methods and demonstrate its superiority when using both simulated data as well as real-world case studies.
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