HONG KONG BAPTIST UNIVERSITY
FACULTY OF SCIENCE
Department of Computer Science Colloquium
Soft Granular Mining: Concepts, Applications and Big Data Issues
Prof. Sankar K. Pal
Center for Soft Computing Research
Indian Statistical Institute
Date: June 12, 2014 (Thursday)
Time: 10:30 - 11:30 am
Venue: Lecture Theatre 1 (LT1), Ho Sin Hang Campus
Different components of machine intelligence are explained. The role of rough sets in uncertainty handling and granular computing is highlighted. Relevance of its integration with fuzzy sets as a stronger paradigm for uncertainty handling is explained. Generalized rough sets using the concept of fuzziness in granules and sets, rough-fuzzy entropy, f-information granules, fuzzy equivalence partition matrix and f-information measures are defined. Their significance in tasks like case generation, measuring image ambiguity and mutual information for efficient information mining is described. Concepts of fuzzy granular computing and granular fuzzy computing are explained.
While rough-fuzzy case generation with variable reduced dimension is useful for mining data sets with large dimension and size, rough-fuzzy clustering and rough-fuzzy knowledge encoding are superior in terms of performance and speed. Rough-fuzzy image entropy takes care of the fuzziness in boundary regions as well as the rough resemblance among nearby pixels and gray levels. F-information measures are significant in redundancy removal while maximizing relevance for efficient feature selection. These characteristics are demonstrated for image/video analysis and bioinformatics problems (viz, gene and miRNA selection), among others, explaining the role of different kinds of granules and challenging issues.
The talk concludes mentioning their relevance in handling big data issues and other future directions of research.
Sankar K. Pal (www.isical.ac.in/~sankar) is a Distinguished Scientist of the Indian Statistical Institute and its former Director. He is also a J.C. Bose Fellow of the Govt. of India and INAE Chair Professor. He founded the Machine Intelligence Unit and the Center for Soft Computing Research: A National Facility in the Institute in Calcutta. He received a Ph.D. in Radio Physics and Electronics from the University of Calcutta in 1979, and another Ph.D. in Electrical Engineering along with DIC from Imperial College, University of London in 1982. He joined his Institute in 1975 as a CSIR Senior Research Fellow where he became a Full Professor in 1987, Distinguished Scientist in 1998 and the Director for the term 2005-10.
He worked at the University of California, Berkeley and the University of Maryland, College Park in 1986-87; the NASA Johnson Space Center, Houston, Texas in 1990-92 & 1994; and in US Naval Research Laboratory, Washington DC in 2004. Since 1997 he has been serving as a Distinguished Visitor of IEEE Computer Society (USA) for the Asia-Pacific Region, and held several visiting positions in Italy, Poland, Hong Kong and Australian universities.
Prof. Pal is a Fellow of the IEEE, the Academy of Sciences for the Developing World (TWAS), International Association for Pattern recognition, International Association of Fuzzy Systems, and all the four National Academies for Science/Engineering in India. He is/ was an Associate Editor of IEEE Trans. Pattern Analysis and Machine Intelligence (2002-06), IEEE Trans. Neural Networks [1994-98 & 2003-06], Neurocomputing (1995-2005), Pattern Recognition Letters (1993-2011), Int. J. Pattern Recognition & Artificial Intelligence, Applied Intelligence, Information Sciences, Fuzzy Sets and Systems, Fundamenta Informaticae, LNCS Trans. Rough Sets, Int. J. Computational Intelligence and Applications, IET Image Processing, and J. Intelligent Information Systems; Editor-in-Chief, Int. J. Signal Processing, Image Processing and Pattern Recognition; a Book Series Editor, Frontiers in Artificial Intelligence and Applications, IOS Press, and Statistical Science and Interdisciplinary Research, World Scientific; a Member, Executive Advisory Editorial Board, IEEE Trans. Fuzzy Systems, Int. Journal on Image and Graphics, and Int. Journal of Approximate Reasoning; and a Guest Editor of IEEE Computer, IEEE SMC and Theoretical Computer Science.
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Department of Computer Science, Hong Kong Baptist University