在计量模型中遇见多重共线性了,怎么解决?差分的效果不好,岭回归不会用,有没有简单的方法?
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楼主: qhh125
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[问答] [求助]多重共线性 |
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博士生 52%
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回帖推荐Dealing with multicollinearity
• Make sure you haven’t made any flagrant errors, e.g. improper use of computed or dummy variables.
• Increase the sample size. This will usually decrease standard errors, and make it less likely that results are some sort of sampling "fluke."
• Use information from prior research. Suppose previous studies have shown that β1 = 2*β2. ...
Tolerance is defined as 1 - R-squared, where R-squared is the multiple R of a given independent regressed on all other independent variables. If the tolerance value is less than some cutoff value, usually .20, the independent should be dropped from the analysis due to multicollinearity. This is better than just using simple r > .80 since tolerance looks at the independent variable in relation to ...
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