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We would like to thank Beth Andrews, Christian Francq, Jean-Michel Zakoïan, Gabriele Fiorentini, Enrique Sentana, Qiwei Yao, Shiqing Ling, and Ke Zhu for their insightful and stimulating discussion...
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We would like to thank Beth Andrews, Christian Francq, Jean-Michel Zakoïan, Gabriele Fiorentini, Enrique Sentana, Qiwei Yao, Shiqing Ling, and Ke Zhu for their insightful and stimulating discussion...
采用重尾似然的 GARCH 模型拟极大似然估计
The non-Gaussian maximum likelihood estimator is frequently used in GARCH models with the intention of capturing heavy-tailed returns. However, unless the parametric likelihood family contains the true likelihood, the estimator is inconsistent due to density misspecification. To correct this bias, we identify an unknown scale parameter ηf that is critical to the identification for consistency and propose a three-step quasi-maximum likelihood procedure with non-Gaussian…