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Zdzisław Pawlak
(1926-2006)
Poland

Zdzisław Pawlak, professor of computer science, the father of Rough Sets, died on 7 April, 2006 in Warsaw. With his passing the world has lost a great computer scientist, a honoured member of the International Rough Set Society. He was born on 10 November 1926 in Lodz, Poland. He received his M.Sc. in 1951 in Electronics from the Warsaw University of Technology, Ph.D. in 1958 and D.Sc. in 1963 in the Theory of Computation from the Polish Academy of Sciences. He was a Professor of the Institute of Theoretical and Applied Informatics, the Polish Academy of Sciences in Gliwice and a Member of the Polish Academy of Sciences. His research interests included intelligent systems and cognitive sciences, in particular, decision support systems, knowledge representation, reasoning about knowledge, machine learning, inductive reasoning, vagueness, uncertainty and decision support. He was an author of a new mathematical tool, called rough set theory, intended to deal with vagueness and uncertainty. Over three thousand and two hundred papers have been published by now on rough sets and their applications world wide. Several international workshops and conferences on rough sets have been held in recent years. He was a recipient of many awards among others the State Award in Computer Science in 1978, the Hugo Steinhaus award for achievements in applied mathematics in 1989; Doctor Honoris Causa of Poznañ University of Technology in 2002; a member or past member of editorial boards of several dozens international journals. Program Committee member of many nternational conferences on computer science. He held over forty visiting university appointments in Europe, USA and Canada, about fifty invited international conference talks, and over one hundred seminar talks given in about fifty universities in Europe, USA, Canada, China, India, Japan, Korea, Taiwan, Australia and Israel. He published around two hundred articles in international journals and several books on various aspects on computer science and application of mathematics and supervised thirty Ph.D. theses in computer science and applied mathematics.
We all mourn his.