D. P. AcharjyaD. P. Acharjya received his Ph. D in computer science from Berhampur University, India; M. Tech. degree in computer science from Utkal University, India in 2002; and M. Sc. from NIT, Rourkela, India. He has been awarded with Gold Medal in M. Sc. Currntly he is an Associate Professor in the school of computing sciences and engineering, VIT University, Vellore, India. He has authored many national and international journal papers and five books; Fundamental Approach to Discrete Mathematics , Computer Based on Mathematics , Theory of Computation ; Rough Set in Knowledge Representation and Granular Computing ; Introduction to Information Technology and Computer Programming to his credit. He is associated with many professional bodies CSI, ISTE, IMS, AMTI, ISIAM, OITS, IACSIT, CSTA, IEEE and IAENG. He was founder secretary of OITS Rourkela chapter. His current research interests include rough sets, formal concept analysis, knowledge representation, data mining, granular computing and business intelligence. Read More Read Less