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中国管理科学 ›› 2009, Vol. 17 ›› Issue (3): 40-46.

• 论文 • 上一篇    下一篇

基于机制转换与随机波动的我国短期利率研究

吴吉林1, 陶旺升2   

  1. 1. 厦门大学王亚南经济研究院, 福建厦门 361005;
    2. 厦门大学经济学院, 福建厦门 361005
  • 收稿日期:2008-12-30 修回日期:2009-04-15 出版日期:2009-06-30 发布日期:2009-06-30
  • 作者简介:吴吉林(1979- ),男(汉族),浙江安吉人,厦门大学王亚南经济研究院与密苏里州立大学哥伦比亚校区联合培养博士研究生,研究方向:固定收益衍生品定价、金融时间序列.

Markov-Regime Switching and Stochastic Volatility Model of Short-Term Interest Rate in China

WU Ji-lin1, TAO Wang-sheng2   

  1. 1. Wang Yan-nan Eonomics Institute, Xiamen University, Xiamen 361005, China;
    2. School of Economics, Xiamen Universiyt, Xiamen 361005, China
  • Received:2008-12-30 Revised:2009-04-15 Online:2009-06-30 Published:2009-06-30

摘要: 本文针对我国短期利率具有非线性,易受政策影响,波动较大并存在结构变化等特点,在Smith(2002)机制转换随机波动模型基础上,引入了非线性漂移项,并同时考虑了随机波动方程中常数项、滞后一阶项及方差的机制转换。该模型应用于我国银行间7天同业拆月度利率的研究发现,银行7天同业拆借利率存在明显的非线性、机制转换和波动的水平效应,而且引入机制转换后波动的持久性显著下降。另外,研究还发现高位概率对应着高的波动率和高的通货膨胀率,而低位概率对应着低的波动率和低的通货膨胀率。

关键词: 短期利率, 机制转换, 随机波动, Kim滤子

Abstract: In view of nonlinearity,policy impacts,big volatility and possible structural changes in Chinese short rate,this paper extends the Markov-regime switching and stochastic volatility model proposed by Smith (2002) and introduces nonlinearity to drift and markov switches to all coefficients in stochastic volatility equation. Using Chinese 7-day interbank offered rate data,we find there exists obvious nonlinearity,regime switching and level volatility effects in the rate,and obvious volatility persistence reduction after taking the regime switching into account. Additionally,high-regime probabilities imply high volatility and high inflation rate,low-regime probabilities imply low volatility and low inflation rate.

Key words: short rate, Markov-regime switching, stochastic volatility, Kim filter

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