Impact of the preprocessing block on the performance of the ΒCI system Soukaina Hamou, Hafida Idrissi Azami, Said Agounad, Ousama Tarahi and Mustapha Moufassih E3S Web Conf., 351 (2022) 01016 Published online: 24 May 2022 DOI: 10.1051/e3sconf/202235101016