消息也已经无法对股票产生影响，股价的波动已经不是随机漫步模式。

News has also been unable to have an impact on the stock, price volatility is not the random walk model.

youdao

所以这里是按照随机漫步的模式进行建模。

So we would model it as a random walk.

youdao

所以这里是按照随机漫步的模式进行建模。

So we would model it as a random walk.

youdao