Near-zero variance predictors. Should we remove them?
R-bloggers 2014-03-06
Summary:
Datasets come sometimes with predictors that take an unique value across samples. Such uninformative predictor is more common than you might think. This kind of predictor is not only non-informative, it can break some models you may want to fit to your data (see example below). Even more common is the presence of predictors that […]