IEEE Systems, Man and Cybernetics Magazine - July 2018 - 55
Remembering Lotfi Zadeh (continued from page 54)
day of the conference. At that time, to me, the theory of fuzzy
edited), organization of international conferences, symposia,
logic was purely a mathematical curiosity, which led me to
and workshops, and, most importantly, in the foundation
explore the field in greater depths. Over the last five decades,
of many international associations such as IFSA and NAFIP
I have witnessed the various phases of its development,
and in the founding of many international journals that are
from the very heavy criticisms by notable scientist and
devoted to fuzzy logic and fuzzy-neural systems.
mathematicians to the successful industrial applications. Prof.
I had the honor of meeting with Lotfi and Fay many times
Zadeh introduced to us the notion of graded membership,
during international conferences, in Berkeley, and roughly
a concept that is quite pervasive in human cognitive pro-
five times when I had invited him to visit our university. Prof.
cesses. This theory, which captures the vagueness in our
Zadeh's last visit was during 22-24 May 2006, when he
thought processes, revolutionized the field of logic with, as we
was bestowed by the University of Saskatchewan with an
have seen, many innovative mathematical ideas.
honorary D.Sc. for his work in the field of fuzzy logic. At the
reception, which was held at President Peter MacKinnon's
My Personal Association with Prof. Zadeh
residence, someone made the remark: "As a matter of fact,
Ever since my association with the field of fuzzy logic
Prof. Zadeh is honoring our university as well by accepting
and cognitive uncertainty, in 1968, the Intelligent Systems
this D.Sc. honor." Also, at the banquet of the biennial con-
Research Laboratory at the University of Saskatchewan,
ference of NAFIPS: New Frontiers in Fuzzy Logic and Soft
Canada, has contributed significantly to this innovative
Computing, which was held at the University of California,
field. We have done academic research in this field con-
Berkeley, on 19-22 June 1996, I had the honor of naming Prof.
cerning neural systems, which has appeared in several
Zadeh as "The Father of Fuzzy Logic" and his wife, Fay, as "The
international conferences [organized by the IFAC, IEEE,
Mother of Fuzzy Logic." I recall Fay asking "Madan, how can
International Society for Optics and Photonics, American
I be a mother when I did not make any contribution to this
Society of Mechanical Engineers, North American Fuzzy
field?" And my response to her was "How he can be a father
Information Processing Society (NAFIPS), International Fuzzy
if you are not a mother?"
Systems Association (IFSA), American Control Conference,
Prof. Zadeh has laid down a scientific path through his earlier
and more], research journals, books, and encyclopedias.
work on Z-transforms and, in his more recent publication,
We have aided the field in its development through the
Z-numbers, which will lead our future generation into the
publications of our books (three authored and more than 20
depths of perception and cognition.
at various future gatherings. Fuzzy
logic, soft computing, Z-numbers, and
the machine-intelligence quotient are
only few outcomes of this incredible
man's intellect. His timeless contributions will undoubtedly continue to
resonate within the scientific world
and profoundly impact human lives
everywhere.
It has been 25 years since I first
met Prof. Zadeh in person, and I am
now finishing my second sabbatical
in Berkeley as his last visiting scholar.
I have many fond memories of him in
every corner of this laboratory and
his home, as he and Fay were always
gracious and kind. However, perhaps,
my most profound memory comes
from those proud and young Iranian
and Iranian-American students who
would knock on this laboratory's
door, hoping for a chance to meet the
great Prof. Zadeh in person. We all
dearly miss him so much here and at
the roundtables. May God bless him.
[6] L. A. Zadeh, "Is there a need for fuzzy logic?"
Inform. Sci., vol. 178, no. 13, pp. 2751-2779, July
2008.
[7] L. A. Zadeh, "A note on Z-numbers," Inform. Sci.,
-Mohammad Akbarzadeh-T
vol. 181, no. 14, pp. 2923-2932, July 2011.
[8] L. A. Zadeh, "Toward a restriction-centered theory
References
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Ju ly 2018
IEEE SyStEmS, man, & CybErnEtICS magazInE
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