Mahmoud Ragab Alrefaey obtained his Ph.D. degree in Partial Quicksort Algorithms and Weighted Branching Processes from the faculty of Mathematics and Natural Sciences of the Christian-Albrechts-University at Kiel (CAU), Schleswig-Holstein, Germany. He is a Professor at the Department of Information Technology, Faculty of Computing and Information Technology, King Abdulaziz University, Jeddah, Saudi Arabia and the Faculty of Science, Al Azhar University, Cairo, Egypt as well. He has worked in different research groups at many universities, such as the Combinatorial Optimization and Graph Algorithms Group (COGA), Faculty II Mathematics and Natural Sciences, Berlin University of Technology, Berlin, Germany, the British University in Egypt BUE, Department of Computer Science and Automation and Integrated Communication Systems Group, Ilmenau University of Technology TU Ilmenau, Thuerengen, Germany. His research focuses on: AI algorithms, deep learning, sorting, optimization, mathematical modeling, data science, neural networks, time series analysis and quantum computation.