encode_categories	encode_categories
encode_deviation	encode_deviation
encode_difference	encode_difference
encode_dummy	encode_dummy
encode_helmert	encode_helmert
encode_lowrank	encode_lowrank
encode_mean	encode_mean
encode_median	encode_median
encode_mnl	encode_mnl
encode_repeated_effect	encode_repeated_effect
encode_simple_effect	encode_simple_effect
encode_SPCA	encode_SPCA
