| encode_categories | Encode a given factor variable automatically | 
| encode_deviation | Encode a given factor variable using deviation encoding | 
| encode_difference | Encode a given factor variable using difference encoding | 
| encode_dummy | Encode a given factor variable using dummy variables | 
| encode_helmert | Encode a given factor variable using helmert encoding | 
| encode_lowrank | Encode a given factor variable using low rank encoding | 
| encode_mean | Encode a given factor variable using means encoding | 
| encode_median | Encode a given factor variable using median encoding | 
| encode_mnl | Encode a given factor variable using a multinomial logit representation | 
| encode_repeated_effect | Encode a given factor variable using a repeated effect encoding | 
| encode_simple_effect | Encode a given factor variable using a simple effect encoding | 
| encode_SPCA | Encode a given factor variable using a sparse PCA representation |