1. Vocational and Technical College of Inner Mongolia Agricultural University, Baotou, China
2. DS & CI Research Group, Universitas Sumatera Utara, Medan, Indonesia
3. Department of Mathematics, Faculty of Education, Erciyes University, Kayseri, Melikgazi, Turkey
4. Department of Applied Mathematics, Faculty of Mathematical Sciences, University of Tabriz, Tabriz, Iran
5. Natural Sciences Faculty, Lankaran State University, Lankaran, Azerbaijan
6. Department of System Programming, South Ural State University, Chelyabinsk, Russia