正在加载图片...
管理浮动机制下的人民币汇率行为分析 ·115· 管理浮动机制下的人民币汇率行为分析 一基于贝叶斯MCMC推断法与ESVDJ模型” 童汉飞1陈浪南2 (1.厦门大学经济学院;2.中山大学岭南学院) 【摘要】本文提出一种汇率行为的理论模型一ESVDJ模型,并对该模型的估 计设计出贝叶斯MCMC推断法。实证研究表明,在管理浮动汇率机制下,人民币 汇率的日常波动持续地维持在较小范围。但如果市场供求双方发生显著的失衡,人 民币汇率将产生跳跃行为,由此引发异常的汇率风险。此外,外汇市场并不显著地 存在类似于权益市场的杠杆效应。本文同时对ESVD]模型与通常的随机波动性模 型SV及SV叮模型进行对比。MCMC似然比检验与密度函数非参数估计表明,后 两者存在较大的设定错误。本文最后对汇率风险监管提出政策建议。 关键词人民币汇率跳跃MCMC推断ESVDJ 中图分类号F830文献标识码A An Analysis of RMB Exchange Rate Behavior Based on MCMC Method and ESVDJ Model Abstract:In this paper,we propose a new theoretical model,ESVDJ,to de- scribe the dynamic behavior of exchange rate between RMB and foreign currencies, as well as to design a MCMC inference algorithm for estimating the model.The em- pirical results employed in this model suggest that the daily change of RMB is con- strained in small scope with highly persistent volatility.However,RMB may pro- duce jumps when foreign exchange market encounters serious imbalance between demand and supply.Furthermore,RMB exchange market does not have significant leverage effect after taking account on the existence of jumps.Finally,the paper provides a MCMC ratio and nonparametric test for the SV,SVJ and ESVDJ,and test result favors our ESVDJ model. Key words:MCMC;Jump;RMB Rate;ESVDJ 前。言 人民币汇率形成机制在过去的两年中发生了显著的变化。首先是央行于2005年7月21 ①感谢中山大学龄南学院王美今教授,以及美国康奈尔大学洪永森教授的建议,当然文资自负, 万方数据管理浮动机制下的人民币汇率行为分析 ·115· 管理浮动机制下的人民币汇率行为分析 ——基于贝叶斯MCMC推断法与ESVDJ模型① 童汉飞1 (1.厦门大学经济学院; 陈浪南2 2.中山大学岭南学院) 【摘要】本文提出一种汇率行为的理论模型——ESVDJ模型,并对该模型的估 计设计出贝叶斯MCMC推断法。实证研究表明,在管理浮动汇率机制下,人民币 汇率的日常波动持续地维持在较小范围。但如果市场供求双方发生显著的失衡,人 民币汇率将产生跳跃行为,由此引发异常的汇率风险。此外,外汇市场并不显著地 存在类似于权益市场的杠杆效应。本文同时对ESVDJ模型与通常的随机波动性模 型sv及SⅥ模型进行对比。MCMC似然比检验与密度函数非参数估计表明,后 两者存在较大的设定错误。本文最后对汇率风险监管提出政策建议。 关键词人民币汇率跳跃MCMC推断ESⅥDJ 中图分类号F830 文献标识码A An Analysis of RMB Exchange Rate BehaVior Based : on MCMC Method and ESVDJ Model Abstract: In this paper, we propose a new theoretical model, ESV]DJ, to de— scribe the dynamic behavior of exchange rate between RMB and foreign currencies, as well as to design a MCMC inference algorithm for estimating the model.The em— pirical results employed in this model suggest that the daily change of RMB is con— strained in sman scope with highly persistent v01atility.However,RMB may pro— duce jumps when foreign exchange market encounters serious imbalance between demand and supply.Furthemore, RMB exchange market does not have significant leverage effect after taking account on the e五stence of j umpS.Finally, the paper provides a MCMC ratio and nonparametric test for the SV, SⅥand ESVDJ, and test result favors our ESvDJ model. Key words:MCMC;Jump;RMB Rate;ESln)J 前 言 人民币汇率形成机制在过去的两年中发生了显著的变化。首先是央行于2005年7月21 ①感谢中山大学岭南学院王美今教授,以及美国康奈尔大学洪永淼教授的建议,当然文责自负。 万方数据
向下翻页>>
©2008-现在 cucdc.com 高等教育资讯网 版权所有