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Title:
美式期权定价的分数阶偏微分方程组及其数值离散方法
Alternative Title: FRACTIONAL PARTIAL DIFFERENTIAL EQUATIONS AND NUMERICAL DISCRETIZATION;METHOD FOR PRICING AMERICAN OPTIONS
Author: 席钧 ; 曹建文
Keyword: 美式期权 ; 欧式期权 ; 分数阶偏微分方程 ; 线性互补问题 ; 数值离散
Source: 数值计算与计算机应用
Issued Date: 2014
Volume: 35, Issue:3, Pages:229-240
Indexed Type: CSCD
Department: 席钧, 中国科学院软件研究所, 北京 100190, 中国. 曹建文, 中国科学院软件研究所, 北京 100190, 中国.
Abstract: KOBOL、FMLS、CGMY等无限跳跃活动Levy模型下,期权定价可以表达为分数阶偏微分方程.欧式期权在部分情况下有解析表达式计算,而美式期权 定价属于线性互补问题,在这些无限跳跃活动模型下表达为包含分数阶偏微分方程的方程组,其同欧式期权定价相比更加复杂,只能采用数值方法. 在Cartea导出的欧式期权方程基础上,本文利用线性互补理论推导出针对美式期权的分数阶偏微分方程组,利用罚方法将分数阶偏微分方程组转化为单一方程 ,釆用Grunwald公式对分数阶偏微分方程设计出相应的数值离散格式,利用有限差分方法得到了每个时间步上的线性方程系统,采用迭代算法进行了线性方 程的求解,并进行了数值实验和结果分析,以此来证明分数阶偏微分方程组及其数值离散格式的有效性.基于分数阶偏微分方程对美式期权定价方程组的推导和相应 的数值离散格式,在当前的文献中未见报道.
English Abstract: Under infinite jump activity models such as Kobol, FMLS and CGMY, the prices of financial derivatives, such as options, satisfy a fractional partial differential equation (FPDE). American options have an additional constraint for the value of the option, and due to this, they lead to linear complementarity problems (LCP). Thus, American options pricing are much more complicated than that of European Options. In this paper, based on the FPDE for pricing European options derived by Cartea, a method for pricing American options is proposed. In the frame of LCP, the FPDE is introduced to build a mathematical model for pricing American options. Then, the fractional parts are treated with Grunwald equation and a penalty method is employed to transform the LCP into linear equations at each time step in the scheme of finite difference. Finally,we present numerical tests which illustrate the effectiveness of the method.
Language: 中文
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Content Type: 期刊论文
URI: http://ir.iscas.ac.cn/handle/311060/17007
Appears in Collections:软件所图书馆_期刊论文

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Recommended Citation:
席钧,曹建文. 美式期权定价的分数阶偏微分方程组及其数值离散方法[J]. 数值计算与计算机应用,2014-01-01,35(3):229-240.
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