And then the model parameters are estimated by means of MLE (maximum likelihood estimation).

其次运用极大似然估计方法对模型的参数进行标定。

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As to the estimating process of GARCH (1, 1) model, the author adopted Maximum Likelihood Estimation and BHHH algorithm to get unknown parameters' value.

至于GARCH(1,1)模型的估计过程，本文用最大似然估计法和BHHH算法求未知参数值。

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