A dataset containing the categories observations belongs to. Each observation is included in two categories : one from the nomenclature z1 and one from the nomenclature z2.
t_exA data frame with 34695 rows and 3 variables:
number to identify the observation
first nomenclature. Each category is coded by an integer (between 5 and 363)
second nomenclature. Each category is coded by an integer (between 1 and 406)