Dummy Variables

1. Why dummy variables?

• Working With Dummy Variables

2. Dummy variables standardization or not?

• Quora::How bad is it to standardize dummy variables?

3. Dummy variables standardization in penalized regressions

• Stackexchange::whether to rescale indicator / binary / dummy predictors for LASSO

  • Most voted answer says Robert Tibshirani suggests to standardize all predictors, including dummies, in the penalized regression to let them receive fair penalties.

• A deep dive into glmnet: standardize