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Tag Archives: 利率
金融仿真笔记(8)-利率模型
利率模型,这东西貌似挺麻烦,利率模型可以分为均衡模型和无套利模型,顺便说一句,套利就是无风险收益,一定是无风险,才能说套利。先说均衡模型,它是以利率期限结构为输出,单因素模型: dr = m(r)dt + s(r)dw,r就是短期利率,m(r)就是说给定的r下,利率随时间的变动量,也可以叫漂移率,当然参数r说,s(r)其实随机波动率,方差率之类的量。这里面m,s不同的取值方法,又有三种模型,m(r) = mu r, s(r) = sigma r Rendleman and Batter modelm(r) = a(b-r), s(r) = sigma , Vasicek modelm(r) = a(b-r), s(r) = sigmasqrt{r}, CIR model 无套利的模型,利率期限结构为输出,HL, HW, BK, BDT, HJMHW, BK, BDT, HJM。 … Continue reading
金融仿真笔记(8)-利率模型
利率模型,这东西貌似挺麻烦,利率模型可以分为均衡模型和无套利模型,顺便说一句,套利就是无风险收益,一定是无风险,才能说套利。先说均衡模型,它是以利率期限结构为输出,单因素模型: dr = m(r)dt + s(r)dw,r就是短期利率,m(r)就是说给定的r下,利率随时间的变动量,也可以叫漂移率,当然参数r说,s(r)其实随机波动率,方差率之类的量。这里面m,s不同的取值方法,又有三种模型,m(r) = mu r, s(r) = sigma r Rendleman and Batter modelm(r) = a(b-r), s(r) = sigma , Vasicek modelm(r) = a(b-r), s(r) = sigmasqrt{r}, CIR model 无套利的模型,利率期限结构为输出,HL, HW, BK, BDT, HJMHW, BK, BDT, HJM。 … Continue reading