在此基础上，通过逐步回归分析确定用于高速公路事件持续时间预测的最佳变量组合并建立多元线性回归模型。

Then, stepwise regression analysis is used to select a best group of factors for the prediction of expressway incident duration, and the multiple linear regression model is established.

youdao

对多元线性回归模型参数的预测，转化为对其变量集合的增广矩阵的叉积阵的预测。

Prediction to the regression parameters was converted to predict cross product matrix of the variable augmented matrix.

youdao

在多元回归模型建立的过程中，由于各个变量的测量单位不相同，多元回归模型无法正确地评估出各个分量对预测值直接的和间接的影响。

The model of multi-regression cannot correctly distinguish the direct and indirect effects from different components in the process of building because the measuring units have differences.

youdao