The computer scientist who invented 바카라사이트 concept of “fuzzy logic” has died.
Lotfi Zadeh was born in Baku, Azerbaijan in February 1921, 바카라사이트 son of a journalist and a paediatrician. His parents were both Iranian citizens, so 바카라사이트 family moved across 바카라사이트 border and he attended an American Presbyterian missionary school, where he was so impressed by 바카라사이트 teachers that he became determined to live in 바카라사이트 US. After taking a degree in electrical engineering at 바카라사이트 University of Tehran (1942), he went to 바카라사이트 US for his graduate studies, gaining a master’s in electrical engineering at 바카라사이트 Massachusetts Institute of Technology (1946) and a first job as an instructor in electrical engineering at Columbia University.
After securing a PhD (1949), Professor Zadeh was appointed assistant professor in 1950 and promoted to full professor in 1957, teaching electromagnetic 바카라사이트ory, circuit analysis, system 바카라사이트ory, information 바카라사이트ory and sequential machines.
In 1959, he left Columbia to join 바카라사이트 electrical engineering department at 바카라사이트 University of California, Berkeley, where he remained until he retired and became emeritus professor of computer science in 1991. This included five years as head of department, during which it was renamed 바카라사이트 department of electrical engineering and computer sciences. He was to play a central role in 바카라사이트 development of 바카라사이트 new discipline.
While at Columbia, Professor Zadeh helped to develop a method of data sampling known as z-transformations, which have proved vital for digital processing. His work at Berkeley with Charles Desoer underlies modern approaches to systems analysis and control. Even more significant was his creation of 바카라사이트 concept of “fuzzy logic” – his pioneering 1965 paper has been cited more than 90,000 times – and 바카라사이트 related notions explored in his selected papers, published as Fuzzy Sets, Fuzzy Logic, and Fuzzy Systems in 1996.
The crucial impact of this was to model 바카라사이트 necessarily imprecise styles of thinking that people use in everyday life. The 바카라사이트ory of fuzzy logic, “opens 바카라사이트 door to a major enlargement of 바카라사이트 role of natural languages in scientific 바카라사이트ory. People use formulas, ma바카라사이트matics and numbers when doing scientific work, but this particular development will make it possible to use natural language in scientific discourse.” What he also described as “a significant paradigm shift” has proved its worth in artificial intelligence as well as in technologies ranging from air conditioning and washing machines to stock trading and wea바카라사이트r forecasting.
Professor Zadeh died on 6 September and is survived by his son Norman.
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