lk1966mail 发表于 2012-1-29 06:52 
我的解答:如果假设是维纳过程,那么就是说股价是不可预测的。因为维纳过程是说过去的价格和未来没关系。未 ...
so, what's the difference between the discrete time stochastic process and the continuous time stochastic process. and how to predict the stock price (or the return rate) by these two stochastic process?