Lotfi Asker Zadeh 201155 225875143 2008-07-15T20:28:50Z 82.33.49.8 {{Infobox_Scientist | name = Lotfali Askar Zadeh | image = Lotfi_A._Zadeh(2004).jpg | caption = Lotfali A. Zadeh in 2004 | birth_date = {{birth date and age|1921|2|12}} | birth_place = [[Azerbaijan SSR]] | death_date = | death_place = | residence = [[United States]] | nationality = [[Iranian]]<ref>http://www.jamris.org/no04/saveas.php?QUEST=JAMRIS_No4_P_70-72.pdf</ref><ref>[http://www.bbc.co.uk/persian/iran/story/2005/05/050505_mj-yazdian-zadeh-berlin.shtml BBCPersian.com<!-- Bot generated title -->]</ref> [[United States|American]]<ref>http://www.jamris.org/no04/saveas.php?QUEST=JAMRIS_No4_P_70-72.pdf</ref> | field = [[Mathematics]] | work_institution = [[U.C. Berkeley]] | alma_mater = [[Columbia University]] | doctoral_advisor = | doctoral_students = | known_for = Founder of [[Fuzzy Mathematics]], <br> [[fuzzy set]] theory, and [[fuzzy logic]] | author_abbreviation_bot = | author_abbreviation_zoo = | awards = [[IEEE Medal of Honor]] | religion = | footnotes = |}} '''Lotfali Askar Zadeh''' ({{PerB|لطفعلی‌عسکرزاده}}, <!-- name in other languages not required, please do not add {{lang-az|Lütfəli Əsgərzadə}} -->, born [[February 4]], [[1921]]) is an [[Iran|Iranian]]- [[United States|American]] mathematician and computer scientist, and a professor of [[computer science]] at the [[University of California, Berkeley]]. == Biography == He was born in [[Baku]], to a Russian mother and an [[Iranian Azeri]] father (from [[Ardabil]],{{Fact|date=April 2008}} center of [[Ardabil province]] of [[Iran]]), grew up in Iran, studied at [[Alborz High School]] and Faculty of Engineering, [[University of Tehran]] (Fanni), and moved to the [[United States]] in [[1944]]. He received an MS degree in electrical engineering from MIT in [[1946]], and a PhD in electrical engineering from Columbia University in [[1949]], He taught for ten years at Columbia University and was promoted to full professor in [[1957]]. He has taught at the [[University of California, Berkeley]] since [[1959]]. He published his seminal work on [[fuzzy sets]] in 1965 in which he detailed the mathematics of fuzzy set theory. In 1973 he proposed his theory of [[fuzzy logic]]. Zadeh is married to Fay Zadeh and has two children, Stella Zadeh and [[Norm Zada|Norman Zadeh]]. ;Awards In 1994 he was inducted as a Fellow of the [[Association for Computing Machinery]]. He was awarded the IEEE Medal of Honor in 1995 "For pioneering development of fuzzy logic and its many diverse applications." Zadeh has a long list of achievements, but since 2003, Zadeh has received the following awards. * In 1993 Azerbaijan bestowed him an honorary Professorship from the [[Azerbaijan State Oil Academy]]. * Outstanding Contribution Award, Web Intelligence Consortium (WIC), Halifax, Canada, 2003. * Wall of Fame, Heinz Nixdorf MuseumsForum (HNF), Paderborn, Germany, 2004. * Civitate Honoris Causa, Budapest Tech Polytechnical Institution, Budapest, Hungary; Sept. 4, 2004. * Doctor Honoris Causa, [[Muroran Institute of Technology]], Muroran, Japan; Oct. 29, 2004. * Doctor Honoris Causa, [[Hong Kong Baptist University]], Hong Kong, China; Nov. 9, 2004. * V. Kaufmann Prize and Gold Medal, International Association for Fuzzy-Set Management and Economy (SIGEF), Barcelona, Spain, Nov. 15, 2004. * Foreign member of the [[Polish Academy of Sciences]], 2005. * Nicolaus Copernicus Medal of the Polish Academy of Sciences, 2005. * J. Keith Brimacombe IPMM Award in recognition of his development of fuzzy set theory and fuzzy logic, 2005. * Doctor Honoris Causa, [[Universidad Politécnica de Madrid]], [[Madrid]], [[Spain]]; Jan. 29, 2007. * [[Richard E. Bellman Control Heritage Award]] * Doctor Honoris Causa, [[Ryerson University]], Toronto , Ontario, Canada; June 10th 2008. == Work == Zadeh is noted to "quick(ly) shrug off nationalism, insisting there are much deeper issues in life", where he himself is quoted stating: "The question really isn't whether I'm American, Russian, Iranian, Azerbaijani, or anything else, I've been shaped by all these people and cultures and I feel quite comfortable among all of them."<ref>"[http://www.azer.com/aiweb/categories/magazine/24_folder/24_articles/24_zadeh.html Short Biographical Sketch]", Betty Blair, [http://www.azer.com Azerbaijan International], accessed August 19th, 2005</ref> Zadeh also notes in the same interview: "Obstinacy and tenacity. Not being afraid to get embroiled in controversy. That's very much a Turkish tradition. That's part of my character, too. I can be very stubborn. That's probably been beneficial for the development of Fuzzy Logic" <ref>[http://azer.com/aiweb/categories/magazine/24_folder/24_articles/24_fuzzylogic.html Azerbaijan International. Interview with Zadeh, Creator of Fuzzy Logic]</ref> === Fuzzy Sets and Systems === [[Aristotle]] [[First principle|introduced]] the [[laws of thought]], which consisted of three fundamental laws: * [[Principle of identity]] * [[Law of the excluded middle]] * [[Law of contradiction]] The [[law of the excluded middle]] states that for all propositions ''p'', either ''p'' or ''~p'' must be true, there being no middle true proposition between them. This should not be confused with the [[principle of bivalence]], which states that either ''p'' must be true or false. It was [[Jan Lukasiewicz|Jan Łukasiewicz]] who first proposed a systematic alternative to the bi-valued logic of Aristotle and described the 3-valued logic, with the third value being ''Possible''. Zadeh, in his theory of fuzzy logic, proposed the making of the membership function operate over the range of [[real numbers]] [0,1]. He proposed new operations for the calculus of [[logic]] and showed that [[fuzzy logic]] was a generalisation of classical [[logic]]. === Other Contributions === Because of the importance of the retraction/relaxation of Aristotelian logic, which opens up applicability of rational methods to the majority of practical situations without dichotomous truth values, Zadeh is one of the most referenced authors in the fields of applied math and the computer sciences among others but his contributions are not limited to fuzzy sets and systems. Zadeh is also credited, along with [[John R. Ragazzini]], in 1952, to have pioneered the development of the [[z-transform]] method in discrete time signal processing and analysis. These methods are now standard in [[digital signal processing]], [[digital control]], and other discrete-time systems used in industry and research. Zadeh's latest work includes [[computing with words and perceptions]]. His recent papers include ''From Search Engines to Question-Answering Systems—The Role of Fuzzy Logic'', Progress in Informatics, No. 1, 1-3, 2005; and ''Toward a Generalized Theory of Uncertainty (GTU)—An Outline'', Information Sciences, Elsevier, Vol. 172, 1-40, 2005. == Publications == Zadeh wrote several articles. A selection: * 1965. ''Fuzzy sets. Information and Control''. 1965; 8: 338–353. * 1965. ''Fuzzy sets and systems''. In: Fox J, editor. ''System Theory''. Brooklyn, NY: Polytechnic Press, 1965: 29–39. * 1972. ''A fuzzy-set-theoretical interpretation of linguistic hedges''. ''Journal of Cybernetics'' 1972; 2: 4–34. * 1973. ''Outline of a new approach to the analysis of complex systems and decision processes''. ''IEEE Trans. Systems, Man and Cybernetics'', 1973; 3: 28–44. * 1974. ''Fuzzy logic and its application to approximate reasoning''. In: ''Information Processing'' 74, Proc. IFIP Congr. 1974 (3), pp. 591–594. * 1975. ''Fuzzy logic and approximate reasoning''. Synthese, 1975; 30: 407–428. * 1975. ''Calculus of fuzzy restrictions''. In: Zadeh LA, Fu KS, Tanaka K, Shimura M, editors. ''Fuzzy Sets and their Applications to Cognitive and Decision Processes''. New York: Academic Press, 1975: 1–39. * 1975. ''The concept of a linguistic variable and its application to approximate reasoning'', I-III, Information Sciences 8 (1975) 199–251, 301–357; 9 (1976) 43–80. ;About Lotfi Asker Zadeh * Fuzzy Sets and Systems. The main journal of the field which contains many contributions by its founder. * [[Aristotle]] : ''Metaphysics'', Chapter 7. * Zadeh : ''From computing with numbers to computing with words — from manipulation of measurements to manipulation of perceptions'' in International Journal of Applied Math and Computer Science, pp. 307-324, vol. 12, no. 3, 2002. * Fay Zadeh. "My Life and Travels with the Father of Fuzzy Logic". 1998, TSI Press, Albuquerque, NM. ==References== {{reflist}} ==External links== * [http://www.cs.berkeley.edu/~zadeh/ Academic profile] &ndash; Berkeley, University of California * [http://www.ieee.org/web/aboutus/history_center/biography/zadeh.html IEEE: Zadeh] * [http://www.iccc.univagora.ro/ Honorary Chair and Keynote Speaker, ICCCC 2008, A conference dedicated to the Centenary of John Bardeen] For Zadeh's PhD students see * [http://www.genealogy.math.ndsu.nodak.edu/html/id.phtml?id=32837 Lotfali A. Zadeh] on the [[Mathematics Genealogy Project]] page. * 1965 seminal work on [http://www-bisc.cs.berkeley.edu/Zadeh-1965.pdf Fuzzy Sets] {{IEEE Medal of Honor 1976-2000}} {{Richard W. Hamming Medal recipients}} {{Richard E. Bellman Control Heritage Award 1979-2000 Laureates}} {{DEFAULTSORT:Zadeh, Lotfali}} [[Category:1921 births]] [[Category:Artificial intelligence researchers]] [[Category:Alborz graduates]] [[Category:Alborz High School alumni]] [[Category:Azerbaijani Americans]] [[Category:Azerbaijani mathematicians]] [[Category:Control theorists]] [[Category:Fellows of the Association for Computing Machinery]] [[Category:Guggenheim Fellows]] [[Category:IEEE Medal of Honor recipients]] [[Category:Iranian Americans]] [[Category:Iranian scientists]] [[Category:Journal editors]] [[Category:Living people]] [[Category:People from Ardabil]] [[Category:People from Baku]] [[Category:Richard E. Bellman Control Heritage Award recipients]] [[Category:Systems scientists]] [[Category:University of California, Berkeley faculty]] [[Category:University of Tehran alumni]] [[ar:لطفي زادة]] [[az:Lütfi Zadə]] [[bg:Лотфи Заде]] [[bn:লতফি জাদেহ]] [[ca:Lotfi Asker Zadeh]] [[de:Lotfi Zadeh]] [[es:Lotfi A. Zadeh]] [[fa:لطفی علی‌عسکرزاده]] [[fr:Lotfi Zadeh]] [[ko:로트피 자데]] [[it:Lotfi Zadeh]] [[nl:Lotfi Zadeh]] [[ja:ロトフィ・ザデー]] [[no:Lotfi Zadeh]] [[pl:Lotfi Zadeh]] [[ru:Заде, Лютфи Аскер]] [[tr:Lotfi Zadeh]] [[zh:盧菲特·澤德]]