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Ornstein-Uhlenbeck过程的特征函数
发表时间:2011-07-15 浏览量:2050 下载量:754
全部作者: | 陈度华,谢语权 |
作者单位: | 湘潭大学数学与计算科学学院 |
摘 要: | 为把Ornstein-Uhlenbeck过程(O-U过程)很好地利用到工程技术、金融等领域中,比较系统地研究了它的一类非常重要的数字特征——特征函数。根据O-U过程的特点,首先采用求期望与方差的方式计算出一参数和二参数O-U过程正态部分的特征函数,再根据特征函数的定义ψX(λ)=Eexp{i λX}计算在x0为常数和x0服从正态分布2种情况下的特征函数,最后类似地将其推广到多参数一维的情形。 |
关 键 词: | 概率论与数理统计;Ornstein-Uhlenbeck过程;单参数;多参数;一维;特征函数 |
Title: | Characteristic function of Ornstein-Uhlenbeck process |
Author: | CHEN Duhua, XIE Yuquan |
Organization: | School of Mathematics and Computational Science, Xiangtan University |
Abstract: | In order to make full use of Ornstein-Uhlenbeck process(O-U process) in engineering, finance and so on, the characteristic function which is one important kind of the numerical characteristics of O-U process is mainly researched in this paper. According to the features of O-U process, firstly the characteristic function of the normal part of one-parameter and two-parameter O-U process is obtained by the way of calculating mean and variance in this paper, then the characteristic function of whole O-U process is computed based on the definition of characteristic function ψX(λ)=Eexp{i λX}on the condition of x0 is constant and x0 obeys normal distribution. Finally it is generalized to the case of multi-parameter one-dimensional similarly. |
Key words: | probability and mathematical statistics; Ornstein-Uhlenbeck process; one-parameter; multi-parameter; one-dimensional; characteristic function |
发表期数: | 2011年7月第13期 |
引用格式: | 陈度华,谢语权. Ornstein-Uhlenbeck过程的特征函数[J]. 中国科技论文在线精品论文,2011,4(13):1203-1206. |
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