R.S. El-Barogy is an assistant lecturer in the Department of Mathematics and Computer Science, Damietta, Faculty of Science, Mansoura University. He received his B.Sc. degree in Mathematics and computer science and his M.Sc. degree in computer science from Damietta, faculty of science at Mansoura University. His research interests include Natural Language Processing, and Speech Recognition. Address: Department of Math., Faculty of Science, New Damietta 34517. email: elbarogy2000@yahoo.com