Open Call for Papers: 29th International Conference on Intuitionistic Fuzzy Sets • 6–7 November 2026 • Sofia, Bulgaria / Online
NEW EXTENDED deadline for submissions: 15 AUGUST 2026.

ICIFS-2026: Difference between revisions

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! Bulgarian&nbsp;time (EET) !! Presenter's local time !! Author(s) / <u>Presenter</u> !! Paper title  
! width="10%" | Bulgarian&nbsp;time (EET)  
! width="10%" | Presenter's local time  
! width="40%" | Author(s) / <u>Presenter</u>  
! width="40%" | Paper title  
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| 16:40-17:00 || || <u>Angel Dimitriev</u><br/><small>Bulgaria</small> || [[Issue:Extending OnlineGN with evaluation of intuitionistic fuzzy predicates|Extending OnlineGN with evaluation of intuitionistic fuzzy predicates]]
| 16:40-17:00 || || <u>Angel Dimitriev</u><br/><small>Bulgaria</small> || [[Issue:Extending OnlineGN with evaluation of intuitionistic fuzzy predicates|Extending OnlineGN with evaluation of intuitionistic fuzzy predicates]]
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| 17:00-17:20 || || Stoyan Poryazov, Velin Andonov, Emiliya Saranova, <u>Ivan Kavaldzhiev</u> || [[Issue:Quantitative analysis and verification of an analytical method for aggregation of intuitionistic fuzzy quality assessments of a sequential composition of two services in an information service network|Quantitative analysis and verification of an analytical method for aggregation of intuitionistic fuzzy quality assessments of a sequential composition of two services in an information service network]]
| 17:00-17:20 || || Stoyan Poryazov, Velin Andonov, Emiliya Saranova, <u>Ivan Kavaldzhiev</u><br/><small>Bulgaria</small> || [[Issue:Quantitative analysis and verification of an analytical method for aggregation of intuitionistic fuzzy quality assessments of a sequential composition of two services in an information service network|Quantitative analysis and verification of an analytical method for aggregation of intuitionistic fuzzy quality assessments of a sequential composition of two services in an information service network]]
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Revision as of 20:57, 3 November 2026

29th International Conference on Intuitionistic Fuzzy Sets
6–7 November 2026 • Sofia, Bulgaria / Online

Aim and scope

The aim of the annual International Conference on Intuitionistic Fuzzy Sets (ICIFS) is to gather specialists interested in intuitionistic fuzziness, decision making under uncertainty, and other topics related to intuitionistic fuzzy sets and logics, and to give them floor for discussions on both theoretical and practical aspects. Since 2013, ICIFS has been an EUSFLAT endorsed event.

All papers accepted for presentation at ICIFS'2026 will be published in the Scopus indexed Journal "Notes on Intuitionistic Fuzzy Sets" (SJR 2025 = 0.219, Scopus quartile Q3) and will be freely available online as Open Access under CC-BY 4.0 license.

Conference Programme

6 November – Friday

Bulgarian time (EET) Presenter's local time Author(s) / Presenter Paper title
10:00-10:10 OPENING CEREMONY
10:10-10:40 (Recorded video) Vladik Kreinovich, Olga Kosheleva, Victor Timchenko, Yuriy Kondratenko
United States		 INVITED TALK: All modern AI needs is intuitionistic fuzzy
10:40-11:00 09:40-10:00 Eulalia Szmidt, Janusz Kacprzyk, Pawel Bujnowski
Poland		 A novel, simple, and effective intuitionistic fuzzy classifier
11:00-11:20 09:00-09:20 El Houssine Bouzid, Bouchra Ben Amma, Said Melliani, Lalla Saadia Chadli
Morocco		 On intuitionistic fuzzy numbers and compact intervals
11:20-11:40 12:20-12:40 Sinem Tarsuslu (Yılmaz), Gökhan Çuvalcioğlu
Türkiye		 Intuitionistic fuzzy topological operators via controlled sets
11:40-12:00 15:10-15:30 Meena Yadav, Shiv Prasad Yadav
India		 Incorporating hesitation in intuitionistic fuzzy slack based measure efficiency with an application to MGNREGA
12:00-12:20 11:00-11:20 Gökhan Çuvalcioğlu, Sinem Tarsuslu (Yılmaz)
Türkiye		 Intuitionistic fuzzy modal operators in an entropy-weighted TOPSIS framework
12:20-12:40 Vassia Atanassova
Bulgaria		 COMMUNITY TALK: Forty years since Atanassov’s landmark paper on intuitionistic fuzzy sets
12:40-14:00 LUNCH
14:00-14:20 Krassimir Atanassov, Vassia Atanassova
Bulgaria		 A non-standard operation on intuitionistic fuzzy pairs
14:20-14:40 15:20-15:40 Emine Funda Okumuş, Sultan Yamak
Türkiye		 Generalized (T,ST) intuitionistic fuzzy anti-ideals on semigroups
14:40-15:00 12:40-13:00 Panagiotis Chountas, Georgy Urumov
United Kingdom		 Calibrated circular and elliptical regions for intuitionistic fuzzy assessments: A methodological benchmark of geometry coverage and boundary effects
15:00-15:20 Kristina Zhivkova, Peter Vassilev, Lyudmila Todorova
Bulgaria		 A short note on a possible ranking of intuitionistic fuzzy alternatives
15:20-15:40 14:20-14:40 Katarína Čunderlíková
Slovakia		 About the sum of intuitionistic fuzzy observables
15:40-16:00 COFFEE BREAK
16:00-16:20 08:00-08:20 Dimitre Dikov Dimitrov, Veselina Bureva
Canada, Bulgaria		 Index of behavioral consistency: A new approach for evaluating association between quantitative variables, and agreement between simulations and observations
16:20-16:40 Sevdalin Tsvetanov, Krassimir Atanassov, Peter Vassilev
Bulgaria		 Intuitionistic fuzzy coloured multigraphs
16:40-17:00 Angel Dimitriev
Bulgaria		 Extending OnlineGN with evaluation of intuitionistic fuzzy predicates
17:00-17:20 Stoyan Poryazov, Velin Andonov, Emiliya Saranova, Ivan Kavaldzhiev
Bulgaria		 Quantitative analysis and verification of an analytical method for aggregation of intuitionistic fuzzy quality assessments of a sequential composition of two services in an information service network

7 November – Saturday

Social programme / Free discussions



Since 2013 ICIFS has been an
EUSFLAT ENDORSED EVENT


Important dates
NEW Extended: 15 AUGUST 2026
Submission of manuscripts
NEW Extended: 15 SEPTEMBER 2026
Peer review process complete,
notification of acceptance
NEW Extended: 1 OCTOBER 2026
Submission of revised versions. Payment of early conference fees
15 October 2026
Payment of late conference fees
6–7 November 2026
Conference dates

Conference Chairs and Committee

Conference Chairs
Program Committee
Organizing Committee

Instructions for the Manuscripts and Presentations

Submissions should be up to 25 pages and compliant with the paper template of the Journal "Notes on Intuitionistic Fuzzy Sets" and the Journal's Publication Ethics Policy. Manuscripts will be subject to rigorous peer review by two independent reviewers.

Presentations should be 15 minutes with 5 minutes for questions and answers. Links to the Zoom platform for online videoconferencing will be timely provided to the authors of the accepted conference submissions, who opt for online presentation. Presenters are requested to give their talk in real time, but prepare and submit in advance a back-up video of their presentation which will be streamed in case of any technical problems at the time of their presentation.

E-mail for paper submissions and conference correspondence: icifs.office@gmail.com

Registration

Registration fee includes:

  • conference access, paper publication, certificate for presentation, shared post-conference access to the videos of all presentation,
  • coffee breaks, lunch and gala dinner — for the physically attending participants.
Regular participants PhD students and EUSFLAT members
NEW Extended: 1 OCTOBER 2026 EUR 150.00 EUR 90.00
Late payment: 15 October 2026 EUR 250.00 EUR 150.00
Note:
  • Details about bank transfer will be provided upon manuscript acceptance.
  • All bank transfer fees are on behalf of the participant.
  • PhD students and EUSFLAT members shall provide respective evidences for the reduced fee.

Contacts

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