Graziano Chiaro, Milôs Kovačević, Gino Tosti, Paolo Giommi, David Salvetti, Giovanni LaMura.
This study is the second step of a first study (B-FlaP) applied to 3FGL catalog (https://arxiv.org/pdf/1607.07822.pdf / https://arxiv.org/abs/1705.09832/arXiv:1808.05881 ) where the Empirical Cumulative Distribution Functions (ECD) and the Artificial Neural Networks ( ANN) were applied for a fast method of screening and classification for blazar candidates of uncertain type. This study will consider the preliminary "eight years" list FL8Y and when available the Fourth Fermi Catalog ( 4FGL) . The search for new parameters to increase the effectiveness of the original B-FlaP algorithm will be the core of this study.