1. Al-Farabi Kazakh National University, School of Digital Technologies, Almaty Management University,Faculty of Information Technology,Almaty,Kazakhstan
2. School of Digital Technologies, Almaty Management University,Almaty,Kazakhstan
3. al-Farabi Kazakh National University,Faculty of Information Technology,Almaty,Kazakhstan
4. Sofia University St. Kliment Ohridski, Institute of Mathematics and Informatics,Faculty of Mathematics and Informatics, Bulgarian Academy of Sciences,Sofia,Bulgaria