PETHALAKASHMI ANNAMALAI, received the Master of Computer Science degree from Alagappa University, Tamil Nadu, India, in 1988 and the Master of Philosophy in Computer Science from Mother Teresa Women’s University, Tamil Nadu, India, in 2000. She is working as Selection Grade Lecturer, Department of Computer Science, M.V.M. Govt. Arts College (w), Dindigul, Tamil Nadu, India, and currently she is the full-time research scholar in the Department of Computer Science, Mother Teresa Women’s University, Tamil Nadu, India. She is in teaching since 1989. Her areas of interest include Data mining, Fuzzy Logic, Rough Set Theory and Neural Network.