利用选举模型来构造股票的收益过程,对选举模型的参数:初始密度、速率强度以及空间维数取不同值时的情形进行比较,并利用Monte-Carlo方法进行计算机模拟,以此研究股票收益过程的宽尾(fat tails)现象。
We construct the return process of a stock with the voter model,and we compare the different cases for the parameters: the starting density, the rate of transform and the dimensions of the voter model. At last we discuss the fat-tail phenomena of the return process by the Monte-Carlo simulation.