Results there is multi-collinearity bias in the result of the least square estimation trend-surface model, use the method of ridge regression can control the multi-collinearity bias.
结果趋势面分析往往存在共线性偏倚，利用岭回归趋势面分析可以在一定程度上控制共线性偏倚。
Results there is multi-collinearity bias in the result of the least square estimation trend-surface model, use the method of ridge regression can control the multi-collinearity bias.
结果趋势面分析往往存在共线性偏倚，利用岭回归趋势面分析可以在一定程度上控制共线性偏倚。
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