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On the Selection of the Ridge and Raise Factors


  • Departamento de Metodos Cuantitativos para la Economia y la Empresa, Universidad de Granada, Campus Universitario de La Cartuja, 18071 (Granada), Spain


Objectives: To analyze the relation of the ridge and raise factors with the squared coefficient of correlation and present, from this relation, a methodology to select the adequate value of the ridge and raise factors. Methods/Statistical Analysis: Two independent variables have been simulated with a given coefficient of correlation between 0.95 and 0.999 and a gap of 0.001 to obtain a dependent variable. Then, it has been selected the value of the ridge and raise factor that leads to values of VIF lesser than 10 for every value of the given coefficient of correlation. Findings: Apart to propose a way to select the raise and ridge factor, it is concluded that the relation between the ridge factor and the squared coefficient of correlation is linear while the relation of the raise factor with the squared coefficient of correlation is potential. Application/Improvements: The procedure presented in this paper allows adequately selecting the value of the ridge and raise factor that mitigates the collinearity. This contribution can be applied in many different fields where collinearity is present.


Multicollinearity, Raise Regression, Ridge Regression.

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