【摘要】 从经济学角度对随机过程的含义进行了解释,从投资者的期望收益率独立于证券价格这一现象对证券价格按连续时间连续样本轨道的随机过程变动进行解释;若假设影响证券价格变动的信息按泊松过程到达,则可以对证券价格遵循连续时间不连续样本轨道的随机过程变化作出解释。可以用类似于连续时间随机过程的经济解释分析离散时间随机过程的经济含义。更多还原

【Abstract】 This paper studies the economic connotation of stochastic processes used in financial research.If the investors expected return is independent to securities,price is generated by Poisson process,then the securities price is discontinuous.The explanation for continuous time case can be used to the discrete time case too.更多还原