Reza Ravanmehr has been a faculty member of the Department of Computer Engineering at Central Tehran Branch, Islamic Azad University, since 2001. His main research interests are recommender systems, large-scale data management systems, and social network analysis. He has published over 60 scientific papers, mainly in social network analysis and recommender systems. Rezvan Mohamadrezaei is currently a Ph.D. candidate in software systems at Central Tehran Branch, Islamic Azad University. Her current research interests are in the areas of deep learning, recommender systems, and information retrieval. She has been a faculty member of the Computer Engineering Department at Karoon Institute of Higher Education, Ahvaz, since 2013.