encode_SPCA             Encode a given factor variable using a sparse
                        PCA representation
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
