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I decided to use RFE using the caret package for feature selection for a logistic regression model.

The documentation says the Varimp for linear model uses

the absolute value of the t-statistic for each model parameter is used.

Logistic regression is not a linear model or has any of the linear model assumptions. Does it make sense to use linear model assumptions to reduce variables for a logistic regression problem using the caret package?

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We wouldn't be making those assumptions. The logistic regression model falls into a wider class called generalized linear models (as does linear regression).

The t-test discussed here is the generalized linear model t-statistic to test that the parameter is equal to zero.

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  • $\begingroup$ Max can i use this for a neural network model as well ? $\endgroup$ – Stat question Nov 6 '13 at 17:34

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