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Invitation for the International Workshop on Intuitionistic Fuzzy Sets - 15 December 2023
Online participation • Free admission


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26th International Conference on Intuitionistic Fuzzy Sets
26–27 June 2023, Sofia, Bulgaria

Dedicated to the 40th Anniversary of the foundation of the Intuitionistic Fuzzy Sets


ICIFS'2023 is an

Important dates

New icon.png 21 April 2023

Submission of manuscripts

New icon.png 5 May 2023

Notification of acceptance

New icon.png 21 May 2023

Submission of final versions; deadline for payment of early conference fees

New icon.png 5 June 2023

Payment of late conference fees

26–27 June 2023

Conference dates at the Institute of Biophysics and Biomedical Engineering, BAS

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 related topics, and to give them floor for discussions on both the theoretical and practical aspects of intuitionistic fuzzy sets. Since 2013, ICIFS has been an EUSFLAT endorsed event.

Download the First Call for Papers (PDF, 693 Kb).

Conference Chairs and Committee

Conference Chairs
Program Committee
Organizing Committee

Instructions for the Manuscripts and Presentations

All papers accepted for presentation at ICIFS'2023 will be published in the Journal "Notes on Intuitionistic Fuzzy Sets" (ISSN: 1310-4926, e-ISSN: 2367-8283) and will be freely available online under Open Access and with DOI numbers. Papers should not exceed 20 A4 pages and should comply 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.

Participants who are willing to attend physically in the conference will be recorded and live streamed for those who attend the conference online.

Participants who are willing to attend online are requested to prepare and submit in advance a back-up video of their presentation (which will be streamed in case of any technical problems) and stay online to answer any live questions from the audience.

E-mail for paper submissions and conference correspondence:

Registration and COVID Provisions

Regular participants Students and EUSFLAT members
Early payment (21 May 2023) EUR 150.00 EUR 100.00
Late payment (5 June 2023) EUR 200.00 EUR 150.00
Note: Details about bank transfer will be provided upon manuscript acceptance.
All bank transfer fees are on behalf of the participant.

Registration fee includes conference access, a copy of the Proceedings and conference materials, coffee breaks, the gala dinner, and the conference trip.




  • Contact person: Assoc. Prof. Vassia Atanassova, PhD
  • Phone: 0035929793609
  • Email: or