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利率仿射模型下的利率风险价格形式实证研究
Authors
柯鸿
莫天瑜
郑振龙
Publication date
15 September 2010
Publisher
Abstract
在仿射利率期限结构动态模型(affine DTSM)框架下,利率风险价格主要有4种设定形式:完全仿射模型(CAM)、实质仿射模型(EAM)、扩展仿射模型(EXAM)和半仿射模型(SAM),经过前人理论和实证的证明,EAM优于CAM,EXAM和SAM均优于EAM.然而,EXAM和SAM的孰优孰劣无法单从理论上的比较得出结论,同时亦鲜有相关的实证研究对其进行比较.因此,文中运用卡尔曼滤波估计法,在三因子CIR模型的基础上对SAM、EXAM和EAM进行实证比较,实证结果表明EXAM要优于SAM.此外,稳健性检验表明,EXAM虽然已为目前最优的利率风险价格形式,但其仍然不够完善
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Last time updated on 16/06/2016