news

IFSA World Congress 2027 will take place in Bari (Italy) and will be jointly organized with the European Society for Fuzzy Logic and Technology (EUSFLAT). Visit IFSA-EUSFLAT 2027 webpage for further details.



During 2025 IFSA World Congress all Selection Committees announced the results of their deliberations. Thank you very much to the members of the committees for their time and dedication. Congratulations to all awardees.


IFSA Fellows

  • Guy De Trê, Ghent University, Belgium
  • Jonathan Lee, National Taiwan University, Taiwan
  • Cengiz Kahraman, Istanbul Technical University, Turkey

IFSA AWARD

for Long Term Pioneering Contributions
  • Janusz Kacprzyk and Ronald R. Yager

IFSA AWARD

for Outstanding Applications of Fuzzy Technology
  • Nick Ernest, Thales Avionics, US

During 2023 IFSA World Congress all Selection Committees announced the results of their deliberations. Thank you very much to the members of the committees for their time and dedication. Congratulations to all awardees.


IFSA Fellows

  • Ching-Feng Juang, National Chung Hsing University, Taiwan
  • Eyke Huellermeier, Ludwig-Maximilians-Universität München, Germany
  • Huchang Liao, Sichuan University, China
  • Weldon Lodwick, University of Colorado Denver, USA
  • Marek Reformat, University of Alberta, Canada
  • Wei-Yen Wang, National Chung Hsing University, Taiwan

During 2021 IFSA-EUSFLAT Conference all Selection Committees announced the results of their deliberations. Thank you very much to the members of the committees for their time and dedication. Congratulations to all awardees.


IFSA Fellows

  • Luis Martínez
  • Eulalia Szmidt
  • Enrique Herrera-Viedma
  • Sławomir Zadrożny

IFSA AWARD

for significant impact on fuzzy logic related research and applications
  • Kaoru Hirota and Etienne Kerre

IFSA OUTSTANDING APPLICATION AWARD

  • Patricia Melin

IFSA BEST JOURNAL PAPER AWARD

  • Kai Zhang, Jianming Zhan, and Wei-Zhi Wu. Novel fuzzy rough set models and corresponding applications to multi-criteria decision-making.
    Fuzzy Sets and Systems383:92-126 (2020).

Agreement with IEEE Computational Intelligence Society

It is our pleasure to announce the signing of the Generic Sister Society Agreement Memorandum of Understanding between IEEE Computational Intelligence Society and IFSA.
The goal of the agreement is

‘to encourage the exchange and dissemination of technical information, and to promote understanding and cooperation between the IEEE Computational Intelligence Society (CIS)’ and the members of the International Fuzzy Systems Association (IFSA).’

It is an important agreement that opens a new chapter of relationships between societies. It will allow us to grow and build a strong future.

100th Aniversery of Lotfi Zadeh Birthday

On February 4th, 2021, we celebrate centenary of Lotfi Zadeh's birthday.
Please, watch a video prepared for that occasion - below or at IEEE CIS History website,
where there are more testimonial videos to watch.
Also, please, visit IEEE Colabratac to leave a statement of your memory of Lotfi Zadeh.


During 2019 IFSA-NAFIPS Conference all Selection Committees announced the results of their deliberations. Thank you very much to the members of the committees for their time and dedication. Congratulations to all awardees.


IFSA Fellows (2019)

  • Ildar Batyrshin
  • Tomasa Calvo
  • Oscar Cordon
  • Zongmin Ma
  • Gabriella Pasi
  • Irina Perfilieva
  • Shun-Feng Su

IFSA AWARD (2015, 2017, 2019)

for significant impact on fuzzy logic related research and applications
  • Didier Dubois and Henri Prade (2015)
  • Michio Sugeno (2017)
  • James Bezdek and Hans Zimmermann (2019)

L.A. ZADEH PRIZE

for your researcher showing active leadership in the field of fuzzy sets and systems, and their applications
  • Eyke Hüllemeier

IFSA OUTSTANDING APPLICATION AWARD

  • Makoto Fujiyoshi (Hitachi Zosen Corporation)

IFSA BEST JOURNAL PAPER AWARD (2015, 2017, 2019)

  • Laécio C. Barros, Luciana T. Gomes and Pedro A. Tonelli. Fuzzy differential equations: An approach via fuzzification of the derivative operator.
    Fuzzy Sets and Systems 230:39-52 (2013).
  • Alejandro Ramos-Soto, Alberto Bugarin, Senén Barro. On the role of linguistic descriptions of data in the building of natural language generation systems.
    Fuzzy Sets and Systems 285: 31-51 (2016).
  • Raquel Yera, and Luis Martínez. Fuzzy Tools in Recommender Systems: A Survey.
    International Journal of Computational Intelligence Systems 10: 776-803 (2017).
Learn More


100th Anniversary of Lotfi Zadeh's Birthday





As complexity rises, precise statements lose meaning
and meaningful statements lose precision.

About Us

The International Fuzzy Systems Association (IFSA) is a worldwide organization dedicated to the support, development and promotion of the fundamental issues of fuzzy theory related to (a) sets, (b) logics, (c) relations, (d) natural languages, (e) concept formation, (f) linguistic modeling, (g) vagueness, (h) information granularity, etc. and their applications to (1) systems modeling, (2) system analysis, (3) diagnosis, (4) prediction and (5) control in decision support systems in management and administration of human organizations as well as electro-mechanical systems in manufacturing and process industries. IFSA organizes and encourages participation in open discussion session on the future directions and restructuring of fuzzy theory in IFSA World Congresses. The offical journal of IFSA, published by Elsevier, is the International Journal of Fuzzy Sets and Systems. Furthermore, IFSA sponsors workshops and conferences on fuzzy theory.
.

.

IFSA Council Members List

IFSA Constitution

(modified Sep 21, 2021)

IFSA Operating Guidelines

IFSA By-Laws

IFSA History

conferences

IFSA World Congresses

IFSA (co)Sponsored Conferences

Follow the above link to find a list of IFSA coSponsored Conferences.

Fuzzy-related Conferences

Follow the above link to find a list of conferences about and related to the topic of Fuzzy Sets and Systems.


Learn More

IFSA Members

Membership

Follow the above link to find out how a society can become an IFSA member.


The following societies are members of IFSA

SOFT
(Japan Society for Fuzzy Theory and Intelligent Informatics, Japan)

KIIS
(Korean Institute of Intelligent Systems, Korea)

TFSA
(Taiwan Fuzzy Systems Association, Taiwan)

EUSFLAT
(European Society for Fuzzy Logic and Technology)

NSAIS
(North European Society of Adaptive and Intelligent Systems, Findland)

HFA
(Hungarian Fuzzy Association, Hungary)

SIGEF
(International Association for Fuzzy Set Management and Economy, Spain)

RAFSSoftCom
(Russian Association for Fuzzy Systems and Soft Computing, Russia)

FMSAC
(Fuzzy Mathematics and Systems Association of China, China)

SC-INA
(Indonesian Soft Computing Society, Indonesia)

FSAT
(Fuzzy Systems Association of Turkey, Turkey)

ICSC
(Iranian Coalition on Soft Computing (ISSSI and IFSS), Iran)

VFSS
(Fuzzy Systems Society, Vietnam)

NAFIPS
(North American Fuzzy Informaiton Processing Society)

HAFSA
(Hispanic-American Fuzzy System Association, Maxico)

SBA
(Brazilian Society of Automatics, Brazil)

...to come ...

fellows

IFSA Fellow Comittee and Procedure

Follow the above link to learn more about IFSA Fellow process.


Recognized for their contributions to the fuzzy sets and systems community are the following IFSA Fellows:

Rafik Aliev

Joint MBA Program, USA

Kiyoji Asai

Prof. Emeritus of Osaka Prefecture University, Japan

Krassimir Atanassov

Bulgarian Academy of Sciences, Bulgaria

James Baldwin

University of Bristol, UK

Ildar Batyrshin

National Polytechnic Institute, Mexico

James C. Bezdek

University of West Florida, USA

Zeungnam Bien

(deceased)

Piero Bonissone

General Electric Co., USA

Gloria Bordogna

Italian National Research Council, Italy

Patrick Bosc

Universite de Rennes I, France

Bernadette Bouchon-Meunier

Universite Pierre et Marie Curie, France

Humberto Bustince

Public University of Navarra, Spain

Christer Carlsson

Abo Akademi University, Finland

Oscar Castillo

Tijuana Institute of Technology, Tijuana, Mexico

Tomasa Calvo

University of Alcalá, Spain

Guoqing Chen

Sch. of Econ. & Manage., Tsinghua University, Beijing, China

Shyi-Ming Chen

National Taiwan University of Science and Technology, Taiwan

Oscar Cordon

University of Granada, Spain

Bernard De Baets

Ghent University, Belgium

Guy De Trê

Ghent University, Belgium

Miguel Delgado

University of Granada, Spain

Antonio Di Nola

Universita degli Studi di Salerno, Italy

Didier Dubois

Universite Paul Sabatier, Toulouse, France

Francesc Esteva

Technical University of Catalonia, Spain

Dimitar Filev

Ford Motor Company, USA

Janos Fodor

(deceased)

Maria Angeles Gil

University of Oviedo, Spain

Lluis Godo

Research Artificial Intelligence Research Institute (IIIA), Spain

Joseph Goguen

(deceased)

Fernando Gomide

University of Campinas, Brazil

Siegfried Gottwald

University Leipzig, Germany

Michel Grabisch

University Panthon-Sorbonne, Paris

Madan Gupta

University of Saskatchewan, Canada

Petr Hajek

(deceased)

Francisco Herrera

Full University of Granada, Spain

Enrique Herrera-Viedma

University of Granada, Spain

Eyke Huellermeier

Ludwig-Maximilians-Universität München, Germany

Kaoru Hirota

Tokyo Institute of Technology, Japan

Ulrich Hohle

University of Wuppertal, Germany

Ching-Feng Juang

National Chung Hsing University, Taiwan

Janus Kacprzyk

Systems Research Institute, Polish Academy of Sciences, Poland

Cengiz Kahraman

Istanbul Technical University, Turkey

Abe Kandel

University of South Florida, USA

James Keller

Curators' University of Missouri, USA

Etienne E. Kerre

University of Ghent, Belgium

Erich Peter Klement

University of Linz, Austria

George Klir

(deceased)

Laszlo Koczy

Budapest University of Technology and Economics, Hungary

Bart Kosko

University of Southern California, USA

Donald Kraft

Colorado Technical University, USA

Vladik Kreinovich

University of Texas at El Paso, USA

Rudolf Kruse

Otto-von-Guericke-University of Magdeburg, Germany

Jonathan Lee

National Taiwan University, Taiwan

Huchang Liao

Sichuan University, China

Chin-Teng Lin

Chair National Chiao Tung University, Taiwan

Yingming Liu

Sichuan University, China

Weldon Lodwick

University of Colorado Denver, USA

Jie Lu

University of Technology Sydney, Australia

Zongmin Ma

Nanjing University of Aeronautics and Astronautics, China

Luis Magdalena

European Centre for Soft Computing, Spain

Ebrahim H. Mamdani

(deceased)

Luis Martínez

University of Jaén, Spain

Jerry Mendel

University of Southern California, USA

Radko Mesiar

Slovak University of Technology Bratislava, Slovakia

Sadaaki Miyamoto

University of Tsukuba, Japan

Masaharu Mizumoto

(deceased)

Javier Montero

Complutense University of Madrid, Spain

Masao Mukaidono

Meiji University, Japan

Toshiaki Murofushi

Tokyo Institute of Technology, Japan

Constantin V. Negoita

The City University of New York, USA

Hung T. Nguyen

New Mexico State University, USA

Vilem Novak

University of Ostrava, Czech Republic

Sergei Ovchinnikov

San Francisco State University, USA

Nikhil Pal

Indian Statistical Institute, India

Sankar K. Pal

Indian Statistical Institute, Calcutta, India

Gabriella Pasi

University of Milano-Bicocca, Italy

Witold Pedrycz

University of Alberta, Canada

Irina Perfilieva

University of Ostrava, Czech Republic

Fred Petry

Tulane University, USA

Henri Prade

Universite Paul Sabatier, Toulouse, France

Dan Ralescu

University of Cincinnati, USA

Marek Reformat

University of Alberta, Canada

Imre Rudas

Obuda University, Hungary

Enrique H. Ruspini

Artificial Intelligence Center, SRI International, Menlo Park, USA

Elie Sanchez

(deceased)

Shun-Feng Su

National Taiwan University of Science and Technology, Taiwan

Michio Sugeno

Doshisha University, Japan

Eulalia Szmidt

Polish Academy of Sciences, Poland

Tomohiro Takagi

Meiji University, Japan

Hideo Tanaka

(deceased)

Kazuo Tanaka

University of Electro-Communications, Tokyo, Japan

Toshiro Terano

(deceased)

Settimo Termini

University of Palermo, Italy

Enric Trillas

Technical University of Madrid, Spain

I. Burhan Turksen

University of Toronto, Canada

Motohide Umano

Osaka Prefecture University, Japan

Jose Luis Verdegay

University of Granada, Spain

Wen-June Wang

National Central University, Taiwan

Wei-Yen Wang

National Chung Hsing University, Taiwan

Ronald R. Yager

Iona College, USA

Zeshui Xu

Sichuan University, China

Takeshi Yamakawa

Kyushu Institute of Technology, Japan

Lotfi A. Zadeh

(deceased)

Sławomir Zadrożny

Polish Academy of Sciences, Poland

Hans-Jurgen Zimmermann

RWTH Aachen, Germany

Let’s Talk

Hours:

Monday - Sunday
Please, ask any time.
Your message has been sent. Thank you!