Exclude entire categorical variable? Or just some of its dummies?
118753
Is feature selection with dummy coding of categorical variables problematic?
2219
How do you deal with "nested" variables in a regression model?
20019
Sample size for categorical data
63640
Logistic regression with categorical predictors
3989
Preprocess categorical variables with many values
146344
Remove an entire column from a data.frame in R
11786
Simple effects of categorical interaction
107106
Interpreting coefficient in a linear regression model with categorical variables
141697
Robust method to extract "pure" part of a variable
98315
How do "Dummy Variables" work?
133443
Removing constant from the regression model
95969
How to choose the split in Random forest for categorical predictors (features)?
58090
Drop unused factor levels in a subsetted data frame
118221
How to generate correlated test data that has Bernoulli, categorical, and continuous vectors (in R)?
53735
How to do logistic regression subset selection?
113246
R linear regression categorical variable "hidden" value
27203
Omitted dummy variable coefficient in OLS