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一类oneGARCH-M模型的拟极大

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一类oneGARCH-M模型的拟极大 张兴发, 李元广州大学经济与统计学院, 广州 510006 Quasi-maximum Exponential Likelihood Estimation ZHANG Xingfa, LI YuanSchool of Economics and Statistics, Guangzhou University, Guangzhou small 510006, China
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摘要由于可以用来刻画金融市场波动与收益之间的关系,GARCH-M模型自提出之后,就受到了广泛的研究.关于GARCH-M模型,传统的估计方法大多是基于拟极大似然估计.然而这类方法通常对矩条件的要求比较高,而实际数据未必能够满足这些条件.因此研究如何在较弱的矩条件下来估计GARCH-M模型就有一定的实际意义.本文研究了一类特殊的GARCH-M模型.与传统GARCH-M模型不同的地方在于该类模型的条件方差决定于可观测的序列.通过拟极大指数似然估计的方法给出了模型参数的局部估计.在较弱的矩条件下给出了估计的渐近正态性证明.文章给出的模拟和实证研究表明该估计方法表现很好,有一定的应用价值.
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收稿日期: 2015-03-19
PACS:O212.1
基金资助:国家自然科学基金(11401123,11271095)和高等学校博士学科点专项科研基金(20124410110002)资助项目.
引用本文:
张兴发, 李元. 一类oneGARCH-M模型的拟极大[J]. 应用数学学报, 2016, 39(3): 321-333. ZHANG Xingfa, LI Yuan. Quasi-maximum Exponential Likelihood Estimation. Acta Mathematicae Applicatae Sinica, 2016, 39(3): 321-333.
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