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His general area of research is data and knowledge engineering, and his key areas of interest are data mining and database systems. His current research focus is on 'Data mining for health care management'. His earlier research work primarily focused on areas of Web mining and link analysis. Much of his research has been conducted as a member of the Data Mining Research Group in the Computer Science Department, University of Minnesota. He has published several peer-reviewed papers in leading conferences and workshops, such as IEEE International Conference on Data Mining (ICDM), ACM International Conference on Web Intelligence, International Conference on Web Engineering, and ACM SIGKDD International Workshop on Knowledge Discovery and Data Mining on the Web (WebKDD). Extended versions of his conference and workshop papers have been published in Springer-Verlag's Lecture Notes in Computer Science series. He has also co-authored several book chapters that delve into the application of Web mining techniques to a variety of domains. He has also been a reviewer for the leading academic journals in his fields. He is a member of IEEE, ACM, and SIAM.