1. LISCO Laboratory, LabGED Laboratory, Department of Computer Science, Badji Mokhtar–Annaba University, Annaba, Algeria. zekri_meriem@yahoo.fr
2. LBBM Laboratory, Department of Biochemistry, Badji Mokhtar–Annaba University, Annaba, Algeria
3. LISCO Laboratory, Department of Computer Science, Badji Mokhtar–Annaba University, Annaba, Algeria