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中国短期利率的随机波动与区制转移性
Id:2111
Date:20131014
Status:published
ClickTimes:
作者
郑挺国, 宋涛
正文
短期利率动态一直是金融领域研究的热点和难点,是对利率衍生产品定价和风险管理不可缺少的工具。本文从利率波动随机行为和区制转移特征两个视角对短期利率动态进行扩展,利用粒子滤波方法给出利率区制转移随机波动模型的参数估计和状态估计,并运用该模型对我国短期拆借利率展开实证分析。研究结果表明我国短期利率除具有典型的波动随机行为外,还存在显著的区制转移特征,BS-MSSV 模型对短期利率动态的拟合效果最优,而且证实忽视波动均值的区制转移特征会导致利率波动持续性高估,并使得利率动态拟合变差。
JEL-Codes:
F830.9
关键词:
短期利率;随机波动;区制转移;粒子滤波
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