同时，给出该模型中参数的估计方法。

Meantime, this article gives some estimation methods for the parameters in the model.

youdao

注意到风险的严重程度直接关系到项目参数的估计中的方差。

Note that severity of risk is directly related to the variance in the estimation of a project's parameters.

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时变参数的估计问题，对于动态系统的控制是十分重要的。

Time varying parameter estimation is very important to the control of dynamic system.

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The way you would go about it, if you're a portfolio manager, is you have to come up with estimates of the inputs to these formulas-- that means the expected returns, the standard deviations, and the covariances.

你所要做的，如果你是一个资产经理，你要做的事情就是,对公式里面的一些参数进行估计-,那些参数包括预期收益，标准差，和协方差。

耶鲁公开课 - 金融市场课程节选