Waleed Ali received his B.Sc. in computer science from the Faculty of Science at Taiz University, Yemen, in 2005. He obtained his M.Sc. and Ph.D. in Computer Science from the Faculty of Computing, Universiti Teknologi Malaysia (UTM), Malaysia, in 2009 and 2012, respectively. He is currently an Associate Professor in the IT department of the Faculty of Computing and Information Technology in Rabigh, King Abdulaziz University, since September 2013. He is also a member of the Big Data Center at UTM. He has published several peer-reviewed papers in international journals, conferences, and book chapters. His research interests include web caching, web prefetching, web usage mining, and machine learning techniques and their applications.