International Conference on Intuitionistic Fuzzy Sets

International Conference on Intuitionistic Fuzzy Sets is a scientific meeting devoted to the intuitionistic fuzzy sets, held in Sofia or Varna, Bulgaria annually since 1997 year. It is organized on the basis of a bilateral agreement for scientific cooperation between Institute of Biophysics and Biomedical Engineering at the Bulgarian Academy of Sciences and Systems Research Institute at the Polish Academy of Sciences.

The papers, presented at the conference, are published in the journal "Notes on Intuitionistic Fuzzy Sets".

Conference Proceedings

1^st ICIFS

First ICIFS was held on 18-19 October 1997 in Sofia. The conference proceedings are published in NIFS, Vol. 3, No. 4.

Number Title Author(s) Pages 1 On measuring distances between intuitionistic fuzzy sets Eulalia Szmidt, Janusz Kacprzyk 1—13 2 On intuitionistic fuzzy sets Supriya Kumar De, Ranjit Biswas, Akhil Ranjan Roy 14—20 3 About the intuitionistic fuzzy set generators Humberto Bustince, Victoria Mohedano 21—27 4 Some operators on intuitionistic fuzzy sets Krassimir Atanassov 28—33 5 A note on union and intersection of intuitionistic fuzzy sets Kankana Chakrabarty, Ranjit Biswas, Sudarsan Nanda 34—39 6 A possibility for implementation of elements of the intuitionistic fuzzy logic in decision making in medicine Anthony Shannon, Soon-Ki Kim, Young Hyun Kim, Joseph Sorsich, Krassimir Atanassov, Peter Georgiev 40—43 7 Intuitionistic fuzzy feature-value operations Nikolai Nikolov 44—49

2^nd ICIFS

Second ICIFS was held on 3-4 October 1998 in Sofia. The conference proceedings are published in NIFS, Vol. 4, No. 2 and Vol. 4, No. 3.

Number Title Author(s) Pages — Preface 1—2 1 On the concept of intuitionistic fuzzy set and its development throughout the last fifteen years Krassimir Atanassov 3—17 2 Concavoconvex intuitionistic fuzzy sets Adrian Ban 18—22 3 Environmental impact assessment: an intuitionistic fuzzy approach Srijit Biswas 23—27 4 On intuitionistic fuzzy sets Supriya Kumar De, Ranjit Biswas, Akhil Ranjan Roy 28—33 5 Intuitionistic fuzzy database Supriya Kumar De, Ranjit Biswas, Akhil Ranjan Roy 34—41 6 Fundamental justification of intuitionistic fuzzy logic and of interval-valued fuzzy methods Misha Koshelev, Vladik Kreinovich, Bhuvan Rachamreddy, Haris Yasemis, Krassimir Atanassov 42—46 7 Fuzzy justification of heuristic methods in inverse problems and in numerical computations, with applications to detection of business cycles from fuzzy and intuitionistic fuzzy data Vladik Kreinovich, Hung Nguyen, Berlin Wu, Krassimir Atanassov 47—56

 RAR (20982 Kb, File info)

Number Title Author(s) Pages 1 Natural requirements for natural roundings lead to a hardware-independent characterization of standard rounding procedures T. E. Kaminsky, Vladik Kreinovich 57—64 2 Reengineering frameworks: Issues for fuzzy modeling Cecilia Temponi 65—73 3 Construction of investment expert system on the basis of intuitionistic fuzzy logic Peter V. Vassilev 74—78 4 Generalized net model of health unit activities (an intuitionistic fuzzy approach) Anthony Shannon, Dimiter Iliev, Eulalia Szmidt, Hristo Aladjov, Humberto Bustince Sola, Janusz Kacprzyk, Joseph Sorsich, Krassimir Atanassov, Nikolai Nikolov, Peter Georgiev, Valentina Radeva 79—84 5 An intuitionistic fuzzy generalized net for optimal scheduling of ore handling processes at a sintering plant Idilia Batchkova, Peter Georgiev, Valentina Radeva 85—91 6 A family of residuated implication functions based on parametrized T-norms Thomas Whalen 92—99 — Authors index — 100

3^rd ICIFS

Third ICIFS was held on 16-17 October 1999 in Sofia. The conference proceedings are published in NIFS, Vol. 5, No. 3.

Number Title Author(s) Pages 1 Fuzzy multifunctions in intuitionistic fuzzy topological spaces Oya Bedre Özbakir, Doğan Çoker 1—5 2 An idea for an intuitionistic fuzzy approach to decision making Cecilia Temponi, Anthony Shannon, Krassimir Atanassov, Adrian Ban 6—10 3 From fuzzy values to intuitionistic fuzzy values to intuitionistic fuzzy intervals, etc: Can we get an arbitrary ordering? Vladik Kreinovich, Masao Mukaidono, Krassimir Atanassov 11—18 4 Probability measures for intuitionistic fuzzy sets Eulalia Szmidt, Janusz Kacprzyk 19—28 5 Intuitionistic fuzzy extension principle Mariana Stoeva 29—30 6 Measures of contradiction for intuitionistic fuzzy sets and for fuzzy classifications Jiri Georg Sustal 31—34

4^th ICIFS

Fourth ICIFS was held on 16-17 September 2000 in Sofia. The conference proceedings are published in NIFS, Vol. 6, No. 3 and Vol. 6, No. 4.

 RAR (17518 Kb, File info)

Number Title Author(s) Pages 1 Intuitionistic fuzzy relations and consensus formations Eulalia Szmidt, Janusz Kacprzyk 1—10 2 Intuitionistic fuzzy ideals of inclines Young Bae Jun, Hee Sik Kim 11—19 3 A short remark on an intuitionistic fuzzy abstract system Krassimir Atanassov 20—23 4 Intuitionistic proximity S. K. Samanta, Tapas Kumar Mondal 24—34

 RAR (8645 Kb, File info)

Number Title Author(s) Pages 1 Measurable entropy of intuitionistic fuzzy dynamical system Adrian Ban 35—47 2 Non-well-founded fuzzy and intuitionistic fuzzy sets: A definition and some properties Nikolai Nikolov 48—54 3 A remark on an intuitionistic fuzzy approach to a problem in star dynamics Krassimir Atanassov, Dimitar Sasselov 55—58 4 Generalized net model of the cardiovascular system. An intuitionistic fuzzy approach Joseph Sorsich, Anthony Shannon, Krassimir Atanassov, Soon-Ki Kim 59—63 5 A generalized net for intellectual games learning: An intuitionistic fuzzy approach Hristo Aladjov 64—69

5^th ICIFS

Fifth ICIFS was held on 22-23 September 2001 in Sofia. The conference proceedings are published in NIFS, Vol. 7, No. 3 and Vol. 7, No. 4.

 RAR (943 Kb, File info)

Number Title Author(s) Pages 1 On the defect of intuitionistic fuzzy tautology Adrian I. Ban 1—7 2 IF-bags in decision analysis Kankana Chakrabarty 8—13 3 On the Cartesian product of intuitionistic fuzzy sets Glad Deschrijver, Etienne Kerre 14—22 4 (k1-k2)-Intuitionistic fuzzy sets Tapas Kumar Mondal, S. K. Samanta 23—32 5 On the possibility for intuitionistic fuzzy interpretations of modal logic axioms Krassimir Atanassov 33—38 6 Introduction to intuitionistic fuzzy partial differential equations Said Melliani, Lalla Saadia Chadli 39—42 7 Deductive properties of intuitionistic fuzzy logic Nikolai Nikolov 43—48

 RAR (16630 Kb, File info)

Number Title Author(s) Pages 1 Conflicting situations in flexible systems Panagiotis Chountas, Ilias Petrounias, Krassimir Atanassov 49—57 2 Intuitionistic fuzzy sets in some medical applications Eulalia Szmidt, Janusz Kacprzyk 58—64 3 On intuitionistic fuzzy consent rules Dinko Dimitrov 65—69 4 On an application of intuitionistic fuzzy approach in economic models Peter Vassilev, Cecilia Temponi, Vladik Kreinovich 70—72 5 On the implementation of elements of the intuitionistic fuzzy logic for decision making by medical generalized net models Anthony Shannon, Joseph Sorsich, Krassimir Atanassov, Soon-Ki Kim, Young Hyun Kim 73—76 6 Intuitionistic fuzzy languages in syntactic pattern recognition Ketty Peeva 77—83 7 Application of intuitionistic fuzzy generalized nets to problems in soda ash production Yuliana Mihaylova, Peter Georgiev, Maria Stefanova-Pavlova 84—88

6^th ICIFS

Sixth ICIFS was held on 13-14 September 2002 in Varna. The conference proceedings are published in Vol. 8, No. 3.

 RAR (58231 Kb, File info)

Number Title Author(s) Pages 1 On the representation of intuitionistic fuzzy t-norms and t-conorms Glad Deschrijver, Chris Cornelis, Etienne Kerre 1—10 2 Concept of distances and entropy for intuitionistic fuzzy sets and their applications in group decision making Eulalia Szmidt, Janusz Kacprzyk 11—25 3 Sequences of intuitionistic fuzzy numbers Mariana Nikolova 26—30 4 An example for a difference between ordinary (crisp), fuzzy and intuitionistic fuzzy sets Ljudmila Todorova, Krassimir Atanassov 31—33 5 On distance between intuitionistic fuzzy sets Lalla Saadia Chadli, Said Melliani 34—36 6 Direct and inverse problem resolution in intuitionistic fuzzy relational calculus Ketty Peeva 37—42 7 Numerical solution of fuzzy differential equation by Runge-Kutta method and the intuitionistic treatment S. Abbasbandy, T. Allah Viranloo 43—53 8 A note on a new category of intuitionistic fuzzy sets Basil Papadopoulos, Apostolos Syropoulos, Krassimir Atanassov 54—56 9 Representing and querying temporal workflow schemas Hathal Al-Roki, Panagiotis Chountas, Ilias Petrounias, Vassilis Kodogiannis, Boyan Kolev 57—65 10 Intuitionistic fuzzy interpretations of multi-measurement tool multi-criteria decision making Krassimir Atanassov, Gabriella Pasi, Ronald Yager 66—74 11 From [0,1]-based logic to interval logic Hung T. Nguyen, Vladik Kreinovich 75—94 12 Intuitionistic fuzzy generalized nets in analyzing transaction database systems with continuous deadlock detection Boyan Kolev, Panagiotis Chountas, Ilias Petrounias 95—100 13 Intuitionistic fuzzy generalized net model for diabetes mellitus Anthony Shannon, Joseph Sorsich, Stefan Hadjitodorov, Georgi Gluhchev 101—104 14 Reoptimization of crude oil distillation plant using intuitionistic fuzzy generalized nets Idilia Batchkova, Joanna Alexieva 105—112 15 An intuitionistic fuzzy generalized net application in a negatronic generator Zlatogor Minchev, Hugo Oscar 113—118 16 Common-sense deduction with fuzzy and intuitionistic fuzzy logic Nikolai Nikolov 119—129 17 An intuitionistic fuzzy Petri net at the supervisory level of a discrete event dynamic system Valeri Gochev 130—134

7^th ICIFS

Seventh ICIFS was held on 23-24 August 2003 in Sofia. The conference proceedings are published in NIFS, Vol. 9, No. 3 and Vol. 9, No. 4.

 RAR (21944 Kb, File info)

Number Title Author(s) Pages 1 "Twenty years later" or some words about the intuitionistic fuzzy sets Krassimir Atanassov 1—3 2 Examples of intuitionistic fuzzy algebras and intuitionistic fuzzy measures Adrian Ban 4—10 3 Square and triangle: Reflections on two prominent mathematical structures for the representation of imprecision Chris Cornelis, Glad Deschrijver, Etienne Kerre 11—21 4 Some ways and means to define addition and multiplication operations between intuitionistic fuzzy sets Radoslav Tzvetkov 22—25 5 Solution of intuitionistic fuzzy equation with extended operations Lalla Saadia Chadli, Said Melliani 26—32 6 Some properties of mappings in the model VH Gökhan Çuvalcioğlu 33—39 7 Finite intuitionistic fuzzy machines Ketty Peeva 40—45 8 Intuitionistic fuzzy logic and possibility distributions Nikolai Nikolov 46—50 9 A concept of similarity for intuitionistic fuzzy sets and its use in the aggregation of experts' testimonies Eulalia Szmidt, Janusz Kacprzyk 51—59 10 New similarity measures for intuitionistic fuzzy set theory and mass assignment theory Eulalia Szmidt, Jim Baldwin 60—76

Number Title Author(s) Pages 1 A note on intuitionistic fuzzy routing Channappa Akki, Ranjit Biswas 77—82 2 Normalization of intuitionistic fuzzy relational databases M. Afshar Alam, Sharfuddin Ahmad, Ranjit Biswas 83—89 3 A method of intuitionistic fuzzy search Ashit Kumar Dutta, Abdul Quaiyum Ansari 90—101 4 A generalized net model of the process of face recognition with elements of intuitionistic fuzziness Anthony Shannon, Georgi Gluhchev, Vasil Vasilev, Krassimir Atanassov, Stefan Hadjitodorov 102—108 5 Intuitionistic fuzzy relational databases Boyan Kolev, Panagiotis Chountas 109—113 6 Temporal aspects of web log analysis Ilias Petrounias, A. Assaid, Panagiotis Chountas, Boyan Kolev 114—122 7 Generalized net model of the intranet in a university, using intuitionistic fuzzy estimations Anthony Shannon, Daniela Orozova, Dimitar Sasselov, Evdokia Sotirova, Ilias Petrounias, Krassimir Atanassov, Maciej Krawczak, Pedro Melo-Pinto, Seog-Hoon Rim, Taekyun Kim 123—128 8 Intuitionistic fuzzy interpretation for photographic records of relatively unpredictable events Boyan Djakov, Krassimir Atanassov 129—134 9 Application of intuitionistic fuzzy logic in expert system for textile engineering Yordan Kyosev 135—139 10 Intuitionistic fuzzy generalized net models of the elements of a system for softened water production Joanna Alexieva, Boyan Kolev 140—150

8^th ICIFS

Eighth ICIFS was held on 20-21 June 2004 in Varna. The conference proceedings are published in NIFS, Vol. 10, No. 3 and Vol. 10, No. 4.

Number Title Author(s) Pages 1 Intuitionistic fuzzy-valued possibility and necessity measures Adrian Ban 1—7 2 A note on the convergence of intuitionistic fuzzy sets Peter Vassilev 8—14 3 Entropy for intuitionistic fuzzy set theory and mass assignment theory Eulalia Szmidt, Jim Baldwin 15—28 4 On some temporal intuitionistic fuzzy operators Krassimir Atanassov 29—32 5 Symmetrical difference over intuitionistic fuzzy sets Anton Antonov 33—36 6 Solving problems in intuitionistic fuzzy relational calculus with fuzzy relational calculus toolbox Ketty Peeva, Yordan Kyosev 37—43 7 Derivatives related to intuitionistic fuzzy sets Radoslav Tzvetkov 44—46

Number Title Author(s) Pages 1 Temporality and intuitionistic fuzzy data warehouses Panagiotis Chountas, Ilias Petrounias, Chris Vasilakis, Elia El-Darzi, Andy Tseng, Boyan Kolev, Vassilis Kodogiannis, Peter Georgiev 47—55 2 Intuitionistic fuzzy Voronoi diagrams – Definition and properties Lyudmila Todorova, Anton Antonov, Stefan Hadjitodorov 56—60 3 Medical diagnostic reasoning using a similarity measure for intuitionistic fuzzy sets Eulalia Szmidt, Janusz Kacprzyk 61—69 4 Application of intuitionistic fuzzy logic in systems for analytical data processing Ivanka Valova 70—74 5 Global generalized net model of a human body: An intuitionistic fuzzy approach Anthony Shannon, Krassimir Atanassov, Vihren Chakarov 75—81 6 An intuitionistic fuzzy application in infrared object-reflecting sensors of a mobile robot Zlatogor Minchev 82—85 7 Building hierarchy for patients attendance in intensive care unit with use of generalized nets and intuitionistic fuzzy sets Violeta Tasseva, Evelina Pazvanska, Mihail Matveev 86—90 8 Generalized net model of a university electronic library, using intuitionistic fuzzy estimations Anthony Shannon, Daniela Orozova-Langova, Evdokia Sotirova, Krassimir Atanassov, Pedro Melo-Pinto, Taekyun Kim 91—96

9^th ICIFS

Ninth ICIFS was held on 7-8 May 2005 in Sofia. The conference proceedings are published in NIFS, Vol. 11, No. 2, Vol. 11, No. 3, and Vol. 11, No. 4.

Number Title Author(s) Pages 1 Towards combining two kinds of intuitionistic fuzzy sets Krassimir Atanassov, Trifon Trifonov 1—11 2 New measures of entropy for intuitionistic fuzzy sets Eulalia Szmidt, Janusz Kacprzyk 12—20 3 On one of the geometrical interpretations of the intuitionistic fuzzy sets Violeta Tasseva, Eulalia Szmidt, Janusz Kacprzyk 21—27 4 A simplification of the neutrosophic sets. Neutrosophic logic and intuitionistic fuzzy sets Kalin Georgiev 28—31 5 Some properties of the averaging operator on intuitionistic fuzzy sets Bilian Belchev 32—37 6 A new geometrical interpretation of some concepts in the intuitionistic fuzzy logic Anestis Hatzimichailidis, Basil Papadopoulos 38—46 7 Sugeno integral with respect to intuitionistic fuzzy-valued measures Adrian Ban 47—61

Number Title Author(s) Pages 1 On intuitionistic fuzzy interpretations of elements of utility theory. Part 1 Gabriella Pasi, Krassimir Atanassov, Ronald Yager 62—65 2 IF-probability on MV-algebras Katarína Lendelová 66—72 3 IFS-valued possibility and necessity measures Alžbeta Michalíková 73—77 4 Cardinality and entropy of IF sets Pavol Král 78—87 5 Intuitionistic fuzzy Voronoi diagrams — definition and properties. Part 2 Lyudmila Todorova, Anton Antonov 88—90 6 Remark on a possible application of intuitionistic fuzzy sets in algebra Mladen Vassilev-Missana 91—94 7 Generalized net model with intuitionistic fuzzy estimations of the process of obtaining of scientific titles and degrees Anthony Shannon, Beloslav Riečan, Daniela Langova-Orozova, Elia EI-Darzi, Etienne Kerre, Evdokia Sotirova, Florin Gorunescu, Ilias Petrounias, Jennifer Trelewicz, Krassimir Atanassov, Maciej Krawczak, Panagiotis Chountas, Pedro Melo-Pinto, Peter Georgiev. Taekyun Kim, Violeta Tasseva 95—114 8 Contrast intensification of second type generalized intuitionistic fuzzy sets Parvathi Rangasamy, N. Palaniappan 115—122

Number Title Author(s) Pages 1 Intuitionistic fuzzy generalized nets in modeling web usage patterns identification Ilias Petrounias, Andy Tseng, Panagiotis Chountas, Boyan Kolev, Elia El-Darzi, Vassilis Kodogiannis 123—129 2 A new similarity measure for intuitionistic fuzzy sets and its use in supporting a medical diagnosis Eulalia Szmidt, Janusz Kacprzyk, Mikhail Matveev 130—138 3 Object-oriented principles and associations in multidimensional models. Intuitionistic fuzzy estimations Ivanka Valova 139—145 4 Generalized net model of decision making processes in the management's systems with use of intuitionistic fuzzy sets Rossen Iliev 146—150 5 Modelling of temperature control system in fermentation processes using generalized nets and intuitionistic fuzzy logics Olympia Roeva, Tania Pencheva, Isabel Bentes, Maria Manuel Nascimento 151—157 6 Neural network for defining intuitionistic fuzzy sets in e-learning Sotir Sotirov, Ludmil Dakovski, G. Nenov 158—161 7 Linear dependence and linear independence in intuitionistic fuzzy sets Ketty Peeva, Zlatko Zahariev 162—169 8 On some types of intuitionistic fuzzy negations Krassimir Atanassov 170—172

10^th ICIFS

Tenth ICIFS was held on 28-29 October 2006 in Sofia. The conference proceedings are published in NIFS, Vol. 12, No. 3.

Number Title Author(s) Pages 1 Classification with nominal data using in intuitionistic fuzzy sets Eulalia Szmidt, Janusz Kacprzyk 1—14 2 А generalized net describing а process of decision making with intuitionistic fuzzy expert scores Krassimir Atanassov, Eulalia Szmidt, Janusz Kacprzyk 15—19 3 Some operations on intuitionistic fuzzy sets of root type N. Palaniappan, R. Srinivasan, Parvathi Rangasamy 20—29 4 Online consultations system with intuitionistic fuzzy estimations Daniela Orozova, Teodor Tzhechev 30—34 5 Generalized net model of а self-developing expert system Krassimir Atanassov, Panagiotis Chountas, Boyan Kolev, Evdokia Sotirova 35—40 6 Generalized net modelling of the process of introducing new product то the market and intuitionistic fuzzy estimating its effectiveness Evdokia Sotirova, Krassimir Atanassov, Sotir Sotirov, Ludmila Borisova, Petar Vanev, Ivan Vitanov 41—45 7 The cubes' magic and their application in different fields of science Ivanka Valova 46—54 8 On а class of d-fuzzy sets and d-intuitionistic fuzzy sets Peter Vassilev 55—59 9 On the generalized net modelling of healthcare local area network using intuitionistic fuzzy estimations Anthony Shannon, Desislava Peneva, Elia El-Darzi, Krassimir Atanassov, Panagiotis Chountas, Violeta Tasseva 60—68 10 On two concepts of probability on IF-sets Beloslav Riečan 69—72

11^th ICIFS

Eleventh ICIFS was held on 28-30 April 2007 in Sofia. The conference proceedings are published in NIFS, Vol. 13, No. 2.

Number Title Author(s) Pages 1 Componentwise decomposition of intuitionistic L-fuzzy integrals and interval-valued intuitionistic fuzzy integrals Adrian Ban, Ioan Fechete 1—7 2 Two- and three-parameter representation of intuitionistic fuzzy sets in the context of entropy and similarity Eulalia Szmidt, Janusz Kacprzyk 8—17 3 Extended Choquet integrals and intuitionistic fuzzy sets Radoslav Tzvetkov 18—22 4 On the probability theory of IF-events Beloslav Riečan 23—29 5 Laws of large numbers for M-observables Petra Mazureková 30—35 6 On probabilities on IF-sets and MV-algebras Vladislav Biba 36—38 7 On exponential and logarithmic functions on IF sets Ivana Hollá 39—41 8 On some properties of the intuitionistic fuzzy operator Xa,b,c,d,e,f Krassimir Atanassov 42—47 9 Generalized net model of SSL with intuitionistic fuzzy estimations Ivelina Vardeva, Sotir Sotirov 48—53 10 Generalized net for control and optimization of real processes through neural networks using intuitionistic fuzzy estimations Maciej Krawczak, Elia El-Darzi, Krassimir Atanassov, Violeta Tasseva 54—60 11 Generalized net model of algorithm for intuitionistic fuzzy estimations Peter Georgiev, Lyudmila Todorova, Peter Vassilev 61—70 12 Generalized net modelling of workflow in tasks processing and tracking systems using intuitionistic fuzzy estimations Desislava Peneva, Violeta Tasseva, Elia El-Darzi, Eulalia Szmidt 71—80 13 System for electronic student-teacher interactions with intuitionistic fuzzy estimations Anthony Shannon, Daniela Orozova, Evdokia Sotirova, Krassimir Atanassov, Maciej Krawczak, Pedro Melo-Pinto, Taekyun Kim 81—87 14 Intuitionistic fuzzy knowledge-based OLAP Ermir Rogova, Panagiotis Chountas, Boyan Kolev 88—100 15 On properties of some IFS operators and operations Qiongsun Liu, Cui Ma, Xiandong Zhou 101—107

12^th ICIFS

Twelfth ICIFS was held on 17-18 May 2008 in Sofia. The conference proceedings are published in NIFS, Vol. 14, No. 1 and Vol. 14, No. 2.

 RAR (1000 Kb, File info)

Number Title Author(s) Pages 1 Intuitionistic fuzzy sets and fuzzy sets depending on Q-norms Peter Vassilev, Mladen Vassilev-Missana 1—6 2 On intuitionistic fuzzy negations and intuitionistic fuzzy extended modal operators. Part 1 Chris Hinde, Krassimir Atanassov 7—11 3 On some properties of one Cartesian product over intuitionistic fuzzy sets Velin Andonov 12—19 4 Inequalities with intuitionistic fuzzy topological and Gokhan Çuvalcioğlu's operators Boriana Doycheva 20—22 5 IF nearness Vladimír Janiš 23—26 6 The most general form of one type of intuitionistic fuzzy modal operators. Part 2 Krassimir Atanassov 27—32 7 Operation ÷ over intuitionistic fuzzy sets Anton Cholakov 33—37 8 Trapezoidal approximations of intuitionistic fuzzy numbers expressed by value, ambiguity, width and weighted expected value Adrian Ban 38—47 9 Ranking intuitionistic fuzzy alternatives Eulalia Szmidt, Janusz Kacprzyk 48—56 10 Inequalities with intuitionistic fuzzy modal and topological operators Hristo Inkiov 57—58

Number Title Author(s) Pages 1 Role of fuzzy and intuitionistic fuzzy contrast intensification operators in enhancing images Parvathi Rangasamy, Jayanthi Kuppannan, Krassimir Atanassov, Georgi Gluhchev 59—66 2 An application of intuitionistic fuzzy information for handwritten Arabic word recognition Leila Baccour, Slim Kanoun, Volker Maergner, Mohamed Adel Alimi 67—72 3 Determining the specificity, sensitivity, positive and negative predictive values in intuitionistic fuzzy logic Ludmila Todorova 73—79 4 Multifactor method of teaching quality estimation at universities with intuitionistic fuzzy evaluation Maria Hristova, Evdokia Sotirova 80—83 5 A method for ordering of university subjects using intuitionistic fuzzy evaluation Anthony Shannon, Beloslav Riečan, Evdokia Sotirova, Krassimir Atanassov, Maciej Krawczak, Peter Georgiev, Roumen Nikolov, Sotir Sotirov, Taekyun Kim 84—87 6 Determining intuitionistic fuzzy index for overall employees' performance based on objectives and KPIs Pavel Tcheshmedjiev, Peter Vassilev 88—90 7 Bacillus colonies recognition using intuitionistic fuzzy sets Vahid Khatibi, Gh. A. Montazer 91—99 8 Four extended level operators of membership/non-membership over intuitionistic fuzzy sets Tsvetan Vassilev 100—107 9 Generalized net model of the auto ferry traffic Vasil Bobev, Sotir Sotirov 108—112

13^th ICIFS

Thirteenth ICIFS was held on 9-10 May 2009 in Sofia. The conference proceedings are published in NIFS, Vol. 15, No. 1 and Vol. 15, No. 2.

 RAR (513 Kb, File info)

Number Title Author(s) Pages 1 A note on the Hausdorff distance between Atanassov's intuitionistic fuzzy sets Eulalia Szmidt, Janusz Kacprzyk 1—12 2 A method to obtain trapezoidal approximations of intuitionistic fuzzy numbers from trapezoidal approximations of fuzzy sets Adrian Ban, Lucian Coroianu 13—25 3 Theorem for equivalence of the two most general intuitionistic fuzzy modal operators Krassimir Atanassov 26—31 4 On some properties of intuitionistic fuzzy negation ¬@ Lilija Atanassova 32—35 5 Ergodic theorem on B-structures Lenka Lašová, Magdaléna Renčová 36—41 6 A note on properties of temporal intuitionistic fuzzy sets Parvathi Rangasamy, S. P. Geetha 42—48

 RAR (1059 Kb, File info)

Number Title Author(s) Pages 1 A framework for a prototype of an intuitionistic fuzzy expert system Diana Boyadzhieva 1—9 2 Fault tree analysis in an intuitionistic fuzzy configuration management database Boyan Kolev, Ivaylo Ivanov 10—17 3 Generalized net model of the intuitionistic fuzzy feed forward neural network Krassimir Atanassov, Sotir Sotirov, Maciej Krawczak 18—23 4 Intuitionistic fuzzy detection of signal availability in multipath wireless channels Dimitar Valchev, Sotir Sotirov 24—29 5 On intuitionistic fuzzy trees Panagiotis Chountas, Mohammedsharaf Alzebdi, Anthony Shannon, Krassimir Atanassov 30—32 6 Neural network for defining intuitionistic fuzzy sets in e-learning Sotir Sotirov, Evdokia Sotirova, Daniela Orozova 33—36

14^th ICIFS

The Fourteenth ICIFS was held on 15-16 May 2010 in Sofia. The conference proceedings are published in Notes on Intuitionistic Fuzzy Sets, Vol. 16, No. 2.

 RAR (859 Kb, File info)

Number Title Author(s) Pages 1 On some measures of information and knowledge for intuitionistic fuzzy sets Eulalia Szmidt, Janusz Kacprzyk, Paweł Bujnowski 1—11 2 A note on the extended modal operator Gα,β Peter Vassilev 12—15 3 Equalities with intuitionistic fuzzy subtractions and negations Krassimir Atanassov, Magdaléna Renčová, Dimitar Dimitrov 16—21 4 On some issues related to the distances between the Atanassov intuitionistic fuzzy sets are described on universe with weights Radoslav Tcvetkov, Eulalia Szmidt, Janusz Kacprzyk 22—30 5 Four modal forms of intuitionistic fuzzy implication →@ and two related intuitionistic fuzzy negations. Part 1 Lilija Atanassova 31—34 6 On the new intuitionistic fuzzy operator xa,b,c,d,e,f Krassimir Atanassov 35—38 7 Domination in intuitionistic fuzzy graphs G. Thamizhendhi, Rangasamy Parvathi 39—50 8 Generalized net model of process of the administration servicing in a digital university with intuitionistic fuzzy estimations Anthony Shannon, Evdokia Sotirova, Krassimir Atanassov, Maciej Krawczak, Pedro Melo-Pinto, Sotir Sotirov, Stefan Hadjitodorov, Taekyun Kim 51—56

15^th ICIFS

The Fifteenth ICIFS was held on 11-12 May 2011 in Burgas. The conference proceedings are published in Notes on Intuitionistic Fuzzy Sets, Vol. 17, No. 2.

Number Title Author(s) Pages 1 On intuitionistic fuzzy multi-dimensional sets. Part 4 Krassimir Atanassov, Eulalia Szmidt, Janusz Kacprzyk 1—7 2 On some two-parametric intuitionistic fuzzy implications Piotr Dworniczak 8—16 3 On intuitionistic fuzzy tree-interpretations by index matrices Rangasamy Parvathi, Anthony Shannon, Panagiotis Chountas, Krassimir Atanassov 17—24 4 Pearson's coefficient between intuitionistic fuzzy sets Eulalia Szmidt, Janusz Kacprzyk, Paweł Bujnowski 25—34 5 On α- and α*- separation axioms in intuitionistic fuzzy topological spaces Rekha Srivastava, Amit Kumar Singh 35—43 6 Parameter tuning in fuzzy clustering of intuitionistic fuzzy data. Part 1 N. Karthikeyini Visalakshi, Rangasamy Parvathi, Vassia Atanassova 44—51 7 Intuitionistic fuzzy optimization technique for the solution of an EOQ model Susovan Chakrabortty, Madhumangal Pal, Prasun Kumar Nayak 52—64 8 On Łukasiewicz's intuitionistic fuzzy subtraction Beloslav Riečan, Krassimir Atanassov 65—67 9 A note on distance and similarity measures between intuitionistic fuzzy sets Peter Vassilev 68—74 10 Intuitionistic fuzzy estimation of the ant colony optimization starting points: Part 2 Stefka Fidanova, Pencho Marinov 75—81 11 Intuitionistic fuzzy rw-closed sets and intuitionistic fuzzy rw-continuity S. S. Thakur, Jyoti Pandey Bajpai 82—96

16^th ICIFS

The Sixteenth ICIFS was held on 9–10 September 2012 in Sofia. The conference proceedings are published in Notes on Intuitionistic Fuzzy Sets, Vol. 18, No. 3.

Number Title Author(s) Pages 1 Intuitionistic fuzzy integrals Radoslav Tcvetkov 1—7 2 Absolute value and limit of the function defined on IF sets Alžbeta Michalíková 8—15 3 On the operators partially extending the extended intuitionistic fuzzy operators from modal type Krassimir Atanassov 16—22 4 A note on the unconscientious experts’ evaluations in the intuitionistic fuzzy environment Piotr Dworniczak 23—29 5 On the intuitionistic fuzzy sets with metric type relation between the membership and non-membership functions Peter Vassilev 30—38 6 An experimental analysis of some measures of information and knowledge for intuitionistic fuzzy sets Eulalia Szmidt, Janusz Kacprzyk and Paweł Bujnowski 39—48 7 A new formula for de-i-fuzzification of intuitionistic fuzzy sets Vassia Atanassova and Sotir Sotirov 49—51 8 Properties of intuitionistic fuzzy line graphs M. Akram and R. Parvathi 52—60 9 A generalized net model of university subjects rating with intuitionistic fuzzy estimations Anthony Shannon, Beloslav Riečan, Evdokia Sotirova, Genoveva Inovska, Krassimir Atanassov, Maciej Krawczak, Pedro Melo-Pinto and Taekyun Kim 61—67 10 Some properties of intuitionistic fuzzy primary and semiprimary ideals M. Palanivelrajan and S. Nandakumar 68—74

17^th ICIFS

The Seventeenth ICIFS was held on 1-2 November 2013 in Sofia. The conference proceedings are published in Notes on Intuitionistic Fuzzy Sets, Vol. 19, No. 3.

Number Title Author(s) Pages 1 On intuitionistic fuzzy pairs Krassimir Atanassov, Eulalia Szmidt and Janusz Kacprzyk 1—13 2 Another definition of symmetrical difference over intuitionistic fuzzy sets Wen Sheng Du 14—19 3 Modifications of the weight-center operator, defined over intuitionistic fuzzy sets. Part 3 Beloslav Riečan, Adrian Ban and Krassimir Atanassov 20—24 4 On the operators and partial orderings of intuitionistic fuzzy sets Evgeniy Marinov 25—33 5 Taylor's theorem for functions, defined on Atanassov IF-sets Alžbeta Michalíková 34—41 6 On the law of large numbers for IF-events Beloslav Riečan 42—46 7 On intuitionistic fuzzy subsets with diminishing hesitancy values Peter Vassilev 47—50 8 From fuzzy to intuitionistic fuzzy: Easy and lazy Vassia Atanassova 51—55 9 The extension of modal operators' diagram with last operators Gökhan Çuvalcioğlu 56—61 10 Intuitionistic fuzzy component failure impact analysis (IFCFIA) – A gradual method for SLA dependency mapping and bi-polar impact assessment Roland Schütze 62—72 11 Hexagonal Game Method model of forest fire spread with intuitionistic fuzzy estimations Evdokia Sotirova, Veselina Bureva, Emilia Velizarova, Stefka Fidanova, Pencho Marinov, Anthony Shannon and Krassimir Atanassov 73—80 12 Intuitionistic fuzzy Multilayer Perceptron as a part of integrated systems for early forest-fire detection Sotir Sotirov, Ivelina Vardeva and Maciej Krawczak 81—89 13 Generalized real time multigraphs for communication networks: An intuitionistic fuzzy theoretical model Siddhartha Sankar Biswas, Bashir Alam and M. N. Doja 90—98 14 Intuitionistic fuzzy generalized nets with characteristics of the places of Types 1 and 3 Velin Andonov 99—110 15 Generalized net model of internal financial structural unit’s functionality with intuitionistic fuzzy estimations Lyubka Doukovska and George Shahpazov 111—117

18^th ICIFS

The Eighteenth ICIFS was held on 10-11 May 2014 in Sofia. The conference proceedings are published in Notes on Intuitionistic Fuzzy Sets, Vol. 20, No. 2.

Number Title Author(s) Pages 1 Short remark on interval type-2 fuzzy sets and intuitionistic fuzzy sets Oscar Castillo, Patricia Melin, Radoslav Tsvetkov and Krassimir Atanassov 1—5 2 On level operators for temporal intuitionistic fuzzy sets Sinem Yilmaz and Gökhan Çuvalcioğlu 6—15 3 Extension of one of Baczynski–Jayaram’s problems Nora Angelova and Lilija Atanassova 16—22 4 First weight-center operator Magdaléna Tomová 23—26 5 Note on isohesitant intuitionistic fuzzy sets Peter Vassilev and Todor Stoyanov 27—30 6 On intuitionistic fuzzy homotopy theory Mehmet Çitil and Gökhan Çuvalcioğlu 31—36 7 Some properties of Controlled Set Theory Gökhan Çuvalcioğlu 37—42 8 Trapezoidal/triangular intuitionistic fuzzy numbers versus interval-valued trapezoidal/triangular fuzzy numbers and applications to multicriteria decision making methods Adrian Ban and Delia Tuşe 43—51 9 Two examples for the use of 3-dimensional intuitionistic fuzzy index matrices Krassimir Atanassov, Eulalia Szmidt, Janusz Kacprzyk and Veselina Bureva 52—59 10 Fundamental properties of generalized intuitionistic fuzzy groups Gökhan Çuvalcioğlu, Arif Bal and Esra Aykut 60—68 11 Uncertainty inspired by economical models Alžbeta Michalíková and Beloslav Riečan 69—74 12 Index matrix interpretation and intuitionistic fuzzy estimation of the diet problem Evgeniy Marinov and Elie Daumalle 75—84 13 Data-based approximation of intuitionistic fuzzy target sets Ray-Ming Chen 85—93 14 Discussion on the threshold values in the InterCriteria Decision Making approach Vassia Atanassova , Deyan Mavrov, Lyubka Doukovska and Krassimir Atanassov 94—99 15 Index matrix representation of intuitionistic fuzzy graphs Parvathi Rangasamy, S. Thilagavathi, G. Thamizhendhi and M. G. Karunambigai 100—108 16 Intuitionistic fuzzy evaluation of tokens in generalized nets based on their characteristics Velin Andonov 109—118 17 Intuitionistic fuzzy estimation of the doctoral comprehensive examination Evdokia Sotirova, Anthony Shannon, Sotir Sotirov and Maciej Krawczak 119—125

19^th ICIFS

The Nineteenth ICIFS was held on 4-6 June 2015 in Burgas. The conference proceedings are published in Notes on Intuitionistic Fuzzy Sets, Vol. 21, No. 2.

Number Title Author(s) Pages 1 Short remark on two covering topological operators over intuitionistic fuzzy sets Oscar Castillo, Patricia Melin,Radoslav Tsvetkov and Krassimir Atanassov 1—5 2 Some algebraic properties of the matrix representation of intuitionistic fuzzy modal operators Gökhan Çuvalcioğlu,Sinem Yilmaz and Arif Bal 6—18 3 Some properties of the matrix representation of the intuitionistic fuzzy modal operators Sinem Yilmaz,Mehmet Çitil and Gökhan Çuvalcioğlu 19—24 4 On Fodor’s type of intuitionistic fuzzy implication and negation Krassimir Atanassov,Eulalia Szmidt and Janusz Kacprzyk 25—34 5 Intuitionistic fuzzy implications and Kolmogorov’s and Lukasiewisz–Tarski’s axioms of logic Nora Angelova,Evgeniy Marinov and Krassimir Atanassov 35—42 6 Intuitionistic fuzzy semigroup M. Elomari, S. Melliani,R. Ettoussi and L. S. Chadli 43—50 7 Solution of intuitionistic fuzzy differential equations by successive approximations method R. Ettoussi, S. Melliani, M. Elomari and L. S. Chadli 51—62 8 Temporal intuitionistic fuzzy topology in Šostak's sense Fatih Kutlu and Tunay Bilgin 63—70 9 An auxiliary technique for InterCriteria Analysis via a three dimensional index matrix Peter Vassilev, Lyudmila Todorova and Velin Andonov 71—76 10 Software for InterCriteria Analysis: Implementation of the main algorithm Deyan Mavrov 77—86 11 An intuitionistic fuzzy approach for IT service-level-management Roland Schuetze 87—98 12 InterCriteria analysis of genetic algorithm parameters in parameter identification Tania Pencheva, Maria Angelova, Vassia Atanassova and Olympia Roeva 99—110 13 Application of the InterCriteria decision making method to Bulgarian universities ranking Veselina Bureva, Evdokia Sotirova, Sotir Sotirov and Deyan Mavrov 111—117 14 Application of InterCriteria analysis to the Mesta River pollution modelling Tatiana Ilkova and Mitko Petrov 118—125 15 An example of intercriteria analysis application to weather parameters Todor Kostadinov and Todor Petkov 126—133 16 Intuitionistic fuzzy evaluations of the elbow joint range of motion in the sagittal plane Simeon Ribagin, Anthony Shannon, Maciej Krawczak and Krassimir Atanassov 134—139 17 An application of some intuitionistic fuzzy modal operators to agriculture Gökhan Çuvalcioğlu and Esra Aykut 140—149

20^th ICIFS

The Twentieth ICIFS was held on 2-3 September 2016 in Sofia. The conference proceedings are published in Notes on Intuitionistic Fuzzy Sets, Vol. 22, No. 3.

Number Title Author(s) Pages 1 New Fodor's type of intuitionistic fuzzy implication and negation Krassimir Atanassov, Eulalia Szmidt and Janusz Kacprzyk 1—8 2 On IF-numbers Daniela Kluvancová and Beloslav Riečan 9—13 3 New properties of the intuitionistic fuzzy modal operator ⊗α,β,γ,δ Vassia Atanassova, Gökhan Çuvalcioğlu, Sinem Yılmaz and Krassimir Atanassov 14—20 4 On obtaining intuitionistic fuzzy estimates for similarity of strings Peter Vassilev and Todor Stoyanov 21—24 5 Properties of the intuitionistic fuzzy implications and negations Nora Angelova and Krassimir Atanassov 25—33 6 Intuitionistic fuzzy superfluous submodule Poonam Kumar Sharma and Gagandeep Kaur 34—46 7 Numerical solution of intuitionistic fuzzy differential equations by Adams' three order predictor-corrector method B. Ben Amma, S. Melliani and L. S. Chadli 47—69 8 Solution of system of first order linear differential equations in intuitionistic fuzzy environment Neha Singhal and S. P. Sharma 70—79 9 Evolution problem with intuitionistic fuzzy fractional derivative M. Elomari, S. Melliani and L. S. Chadli 80—90 10 InterCriteria Analysis of Bat Algorithm with Parameter Adaptation Using Type-1 and Interval Type-2 Fuzzy Systems Olympia Roeva, Jonathan Perez, Fevrier Valdez and Oscar Castillo 91—105 11 Operation "concatenation" over intuitionistic fuzzy index matrices Anthony Shannon, Vassia Atanassova and Krassimir Atanassov 106—111 12 An application of intercriteria decision making method to the rankings of universities in the United Kingdom Evdokia Sotirova, Veselina Bureva, Panagiotis Chountas and Maciej Krawczak 112—119 13 Intercriteria analysis for evaluation of the pollution of the Struma River in the Bulgarian section Tatiana Ilkova and Mitko Petrov 120—130

21^st ICIFS

The 21^st ICIFS was held on 22-23 May 2017 in Burgas. The conference proceedings are published in Notes on Intuitionistic Fuzzy Sets, Vol. 23, No. 2.

Number Title Author(s) Pages 1 Compass-and-straightedge constructions in the intuitionistic fuzzy interpretational triangle: two new intuitionistic fuzzy modal operators Vassia Atanassova and Lyubka Doukovska 1—7 2 On the Lebesgue IF–measure Alžbeta Michalíková and Beloslav Riečan 8—12 3 On similarly structured intuitionistic fuzzy sets Peter Vassilev 13—16 4 H-Intuitionistic fuzzy sets Sinem Tarsuslu (Yilmaz) and Yelda Yorulmaz 17—23 5 On intuitionistic fuzzy hyperstructure with T-norm Gökhan Çuvalcioğlu, Mehmet Çitil and Emine Demirbaş 24—31 6 Gromov products and sums on intuitionistic fuzzy sets Radoslav Tsvetkov 32—36 7 Intuitionistic fuzzy implication →187 Krassimir Atanassov, Eulalia Szmidt and Janusz Kacprzyk 37—43 8 Averaging of intuitionistic fuzzy differential equations A. El Allaoui, S. Melliani, Y. Allaoui and L. S. Chadli 44—54 9 Complex intuitionistic fuzzy evolution equations A. El Allaoui, S. Melliani and L. S. Chadli 55—68 10 An application of intuitionistic fuzzy directed hypergraph in molecular structure representation R. Parvathi, C. Yuvapriya and N. Maragatham 69—78 11 A method for graphical representation of membership functions for intuitionistic fuzzy inference systems Oscar Castillo, Amaury Hernandez-Aguila and Mario Garcia-Valdez 79—87 12 Pattern recognition with intuitionistic fuzzy estimations Todor Kostadinov and Veselina Bureva 88—94 13 Intuitionistic fuzzy logic adaptation of particle swarm optimization Patricia Melin, Daniela Sánchez and Pencho Marinov 95—102 14 Using index matrices for handling multiple scenarios in decision making Guy De Tré, Sławomir Zadrożny, Sotir Sotirov and Krassimir Atanassov 103—110 15 An intuitionistic fuzzy facial recognition approach by eigenvalues Todor Petkov, Todor Kostadinov, Sotir Sotirov and Maciej Krawczak 111—118 16 InterCriteria approach to Behterev's disease analysis Bistra Zaharieva, Lyubka Doukovska, Simeon Ribagin and Irina Radeva 119—127 17 Application of the InterCriteria Analysis to the universities rankings system in the Slovak Republic Veselina Bureva, Alžbeta Michalíková, Evdokia Sotirova, Stanislav Popov, Beloslav Riečan and Olympia Roeva 128—140

22^nd ICIFS

The 22^nd ICIFS was held on 12-13 May 2018 in Sofia. The conference proceedings are published in Notes on Intuitionistic Fuzzy Sets, Vol. 24, No. 2.

Number Title Author(s) Pages 1 A remark on intuitionistic fuzzy implications Peter Vassilev, Simeon Ribagin and Janusz Kacprzyk 1—7 2 Intuitionistic fuzzy modal operators of second type over interval-valued intuitionistic fuzzy sets. Part 1 Krassimir Atanassov 8—17 3 Intuitionistic fuzzy action of a group on a set Sinem Tarsuslu (Yilmaz), Ali Tarsuslu and Mehmet Çitil 18—24 4 Intuitionistic fuzzy hollow submodules P. K. Sharma and Gagandeep Kaur 25—32 5 IF topological vector spaces Moumita Chiney and S. K. Samanta 33—51 6 Approximate solution of intuitionistic fuzzy differential equations by using Picard's method R. Ettoussi, S. Melliani and L. S. Chadli 52—62 7 The Pickands–Balkema–de Haan theorem for intuitionistic fuzzy events Katarína Čunderlíková and Renáta Bartková 63—75 8 On some methods of probability Alžbeta Michalíková and Beloslav Riečan 76—83 9 Intercriteria analysis of countries in transition from factor-driven to efficiency-driven economy Vassia Atanassova, Lyubka Doukovska and Maciej Krawczak 84—96 10 Optimization of intuitionistic and type-2 fuzzy systems in control Oscar Castillo 97—105 11 Genetic optimization of type-1, interval and intuitionistic fuzzy recognition systems Patricia Melin 106—128 12 Big data, intuitionistic fuzzy sets and MapReduce operators Panagiotis Chountas, Krassimir Atanassov,Vassia Atanassova,Evdokia Sotirova, Sotir Sotirov and Olympia Roeva 129—135

This issue of Int. Journal "Notes on Intuitionistic Fuzzy Sets" is published with the financial support of the Bulgarian National Science Fund, Grant Ref. No. DNP-06-8/2017.

23^rd ICIFS

The 23^rd ICIFS was held on 16-17 May 2019 in Sofia. The conference proceedings are published in Notes on Intuitionistic Fuzzy Sets, Vol. 25, No. 2.

Number Title Author(s) Pages 1 On the most extended interval-valued intuitionistic fuzzy modal operators from both types Krassimir Atanassov 1—14 2 Sheet level sets and the representation theorem for intuitionistic fuzzy sets Gökhan Çuvalcıoğlu, Sinem (Yılmaz) Tarsuslu and Emine Demirbaş 15—19 3 The resolution theorems for intuitionistic fuzzy sets with sheet-level sets Arif Bal, Gökhan Çuvalcıoğlu and Gül Tümen 20—24 4 Miltiplicatively equivalent intuitionistic fuzzy sets Peter Vassilev and Lyudmila Todorova 25—28 5 m-almost everywhere convergence of intuitionistic fuzzy observables induced by Borel measurable function Katarína Čunderlíková 29—40 6 A new approach for an intuitionistic fuzzy Sugeno integral for decision making Gabriela E. Martínez, Patricia Melin and Oscar Castillo 41—52 7 A new fractal dimension definition based on intuitionistic fuzzy logic Oscar Castillo and Patricia Melin 53—59 8 Intuitionistic fuzzy sets and their use in image classification Alžbeta Michalíková 60—66 9 InterCriteria Analysis applied to human resources in science and technology George Rusev and Veselina Bureva 67—76 10 InterCriteria Analysis for selection of specific growth rate models of batch cultivation by Saccharomyces cerevisiae yeast for ethanol production Mitko Petrov 77—87 11 InterCriteria Analysis of data for blood collection in the Transfusion Hematology Department, University Hospital “St. Anna”, Sofia Nikolay Andreev, Peter Vassilev, Simeon Ribagin and Sotir Sotirov 88—95 12 InterCriteria Analysis of oncological data of the patients for the city of Burgas Evdokia Sotirova, Yaroslava Petrova and Hristo Bozov 96—103 13 Generalized nets with additional intuitionistic fuzzy conditions for tokens transfer Dafina Zoteva, Eulalia Szmidt and Janusz Kacprzyk 104—114 14 Generalized net models of queueing disciplines in finite buffer queueing systems with intuitionistic fuzzy evaluations of the tasks Zhivko Tomov , Maciej Krawczak , Velin Andonov, Krassimir Atanassov and Stanislav Simeonov 115—122 15 Intuitionistic Fuzzy Topological BH-Algebras V. K. Nivedida and M. Palanivelrajan 123—135

This issue of Int. Journal "Notes on Intuitionistic Fuzzy Sets" is published with the financial support of the Bulgarian National Science Fund, Grant Ref. No. KP-06-NP-19/2018.

24^th ICIFS

The 24^th ICIFS was held on 8-9 October 2020 in Burgas. Selected papers from the conference are published in Notes on Intuitionistic Fuzzy Sets, Vol. 26, No. 3.

Number Title Author(s) Pages 1 Constructions for t-conorms and t-norms on interval-valued and interval-valued intuitionistic fuzzy sets by paving Martin Kalina 1—12 2 Conditional intuitionistic fuzzy probability and martingale convergence theorem using IF-probability Katarína Čunderlíková 13—21 3 Intuitionistic fuzzy negations and their use in image classification Alžbeta Michalíková 22—32 4 A study on intuitionistic L-fuzzy T1 spaces R. Islam, M. S. Hossain and M. F. Hoque 33—42 5 Some remarks on assigning weights to experts in multi-attribute group decision making using intuitionistic fuzzy sets Eulalia Szmidt and Janusz Kacprzyk 43—51 6 A new intuitionistic fuzzy definiteness norm Krassimir Atanassov and Peter Vassilev 52—60

This issue of Int. Journal "Notes on Intuitionistic Fuzzy Sets" is published with the financial support of the Bulgarian National Science Fund, Grant Ref. No. KP-06-NP1/28/2019.

25^th ICIFS

The 25^th Jubilee Edition of ICIFS was held on 9-10 September 2022 in Sofia. The conference proceedings are published in Notes on Intuitionistic Fuzzy Sets, Vol. 28, No. 3.

Number Title Author(s) Pages Front matter i—iv 1 To what extent can intuitionistic fuzzy options be ranked? Eulalia Szmidt, Janusz Kacprzyk and Paweł Bujnowski 193—202 2 How to represent uncertainty via qudits: Probability distributions, regular, intuitionistic and picture fuzzy sets, F-transforms, etc. Olga Kosheleva and Vladik Kreinovich 203—210 3 On the intuitionistic fuzzy modal feeble topological structures Krassimir T. Atanassov 211—222 4 The ⊖ operation over intuitionistic fuzzy pairs Peter Vassilev and Simeon Ribagin 223—227 5 Convergence in measure of intuitionistic fuzzy observables Katarína Čunderlíková and Dušana Babicová 228—237 6 On some classes of Tchebychev distance based on intuitionistic fuzzy cardinality and intuitionistic fuzzy statistical description Romuald Thierry Dzati Kamga, Bertrand Mbama Engoulou, Siméon Fotso and Louis Aimé Fono 238—258 7 Existence and uniqueness of intuitionistic fuzzy solution for semilinear intuitionistic fuzzy integro-differential equations with nonlocal conditions Zineb Belhallaj, M'hamed Elomari, Said Melliani and Lalla Saadia Chadli 259—270 8 The Hauber's law with intuitionistic fuzzy implications Nora Angelova, Janusz Kacprzyk, Alžbeta Michalíková and Krassimir T. Atanassov 271—279 9 A study on intuitionistic fuzzy 2-absorbing primary ideals in Г-ring P. K. Sharma, Hem Lata and Nitin Bharadwaj 280—292 10 The algorithm of correction of the unconscientious experts’ evaluations in the interval-valued intuitionistic fuzzy sets case Piotr Dworniczak 293—305 11 Some notes on intuitionistic fuzzy equivalence relations and their use on real data Alžbeta Michalíková 306—318 12 Quantifying individual scientific output in terms of a new intuitionistic fuzzy sets based author-level metrics (IFALM) Vassia Atanassova 319—333 13 Digital transformation project selection using Interval Valued Type-2 Intuitionistic Fuzzy TOPSIS Başar Öztayşi, Sezi Cevik Onar, Cengiz Kahraman and Selcuk Cebi 334—342 14 Clustering stock price volatility using intuitionistic fuzzy sets Georgy Urumov and Panagiotis Chountas 343—352 15 An application of the InterCriteria Analysis and clusterization approach over a burnout dataset Sotir Sotirov, Valentin Stoyanov, Maciej Krawczak, Evdokia Sotirova and Simeon Ribagin 353—360 16 Pharmaceutical 3PL supplier selection using interval-valued intuitionistic fuzzy TOPSIS Cengiz Kahraman, Selcuk Cebi, Sezi Cevik Onar and Başar Öztayşi 361—374

This issue of Int. Journal "Notes on Intuitionistic Fuzzy Sets" is published with the financial support of the Bulgarian National Science Fund, Grant Ref. No. KP-06-NP3-44/16.11.2021.

26^th ICIFS

The 26^th ICIFS was held on 26-27 June 2023 in Sofia. Bulgaria. The conference proceedings are published in Notes on Intuitionistic Fuzzy Sets, Vol. 29, No. 2.

Number Title Author(s) Pages 1 Trigonometric-based operators over intuitionistic fuzzy sets Peter Vassilev 85—89 2 About the Lp space of intuitionistic fuzzy observables Katarína Čunderlíková 90—98 3 Intuitionistic L-fuzzy classical prime and intuitionistic L-fuzzy 2-absorbing submodules P. K. Sharma 99—113 4 Normality and translation of IFS(G × Q) under norms Rasul Rasuli 114—132 5 Intuitionistic fuzzy bimodal topological structures Krassimir Atanassov 133—143 6 Identification of a sufficient number of the best attributes in the intuitionistic fuzzy models Eulalia Szmidt, Janusz Kacprzyk and Paweł Bujnowski 144—156 7 InterCriteria Analysis with weight coefficients of objects or criteria Krassimir Atanassov, Deyan Mavrov and Vassia Atanassova 157—165 8 Evaluating the performance of catalyst and feedstocks in the fluid catalytic cracking process: Application of InterCriteria Analysis with weight coefficients of the objects Veselina Bureva, Krassimir Atanassov, Yana Mersinkova and Dicho Stratiev 166—177 9 Evaluating the performance of catalyst and feedstocks in the fluid catalytic cracking process: Application of InterCriteria Analysis with weight coefficients of the criteria Deyan Mavrov, Stanislav Popov, Valentin Nenov and Dicho Stratiev 178—196 10 Investigation of the Turkish university rankings using InterCriteria Analysis Veselina Bureva, Cengiz Kahraman and Sotir Sotirov 197—207 11 InterCriteria Analysis applied to the health problems declared by individuals in Bulgaria Veselina Bureva, Ivanka Stamova, Zlatko Yordanov and Evdokia Sotirova 208—217 12 The role of operations over intuitionistic fuzzy index matrices in color image analysis R. Parvathi, R. K. Nivedhaa and Vassia Atanassova 218—230 13 Intuitionistic fuzzy neural network with filtering functions. An index matrix interpretation Sotir Sotirov, Maciej Krawczak, Diana Petkova and Krassimir Atanassov 231—238

This issue of Int. Journal "Notes on Intuitionistic Fuzzy Sets" is published with the financial support of the Bulgarian National Science Fund, Grant Ref. No. KP-06-NP4-22/01.12.2022.

27^th ICIFS

The 27^th ICIFS was held on 5–6 July 2024, Burgas, Bulgaria. The conference proceedings are published in Notes on Intuitionistic Fuzzy Sets, Vol. 30, No. 1 (Part 1) and Notes on Intuitionistic Fuzzy Sets, Vol. 30, No. 2 (Part 2).

Number Title Author(s) Pages 1 Research on intuitionistic fuzzy implications. Part 4 Nora Angelova, Krassimir Atanassov and Vassia Atanassova 1—8 2 A brief note on intuitionistic fuzzy operators Jaydip Bhattacharya 9—17 3 Two de-I-fuzzification procedures for intuitionistic fuzzy information Vasile Patrascu 18—25 4 Generalizations of prime intuitionistic fuzzy ideals of a lattice Poonam Kumar Sharma 26—55 5 A note about almost uniform convergence on D-poset of intuitionistic fuzzy sets Katarína Čunderlíková 56—65 6 An in-depth exploration of intuitionistic fuzzy T0 in the context of bitopology Saikh Shahjahan Miah, Ranapati Ronjon and Nigar Sultana 66—76 7 Some notes on the relationships between intuitionistic fuzzy sets and correlation analysis Alžbeta Michalíková and Adam Dudáš 77—91 8 On a family of billiards-inspired operators over intuitionistic fuzzy sets Peter Vassilev and Vassia Atanassova 92—100

Number Title Author(s) Pages 1 Intuitionistic fuzzy sets in group decision making – A novel approach Eulalia Szmidt, Janusz Kacprzyk, Vassia Atanassova and Paweł Bujnowski 101—112 2 On OWA, Machine Learning and Big Data: The case for IFS over universes Panagiotis Chountas, Mustafa Hajmohammed and Ismael Rhemat 113—120 3 Performance measurement using intuitionistic fuzzy sets: A case study from debt collection centers Başar Öztayşi, Selçuk Çebi, Cengiz Kahraman and Sezi Çevik Onar 121—130 4 Ranking of factors affecting pricing in construction projects by intuitionistic fuzzy analytic hierarchy process with ordered pairs Selçuk Çebi, Cengiz Kahraman, Sezi Çevik Onar and Başar Öztayşi 131—141 5 Designing and developing Intuitionistic Fuzzy Logic Toolbox in MATLAB: Membership and non-membership functions gallery Kaviranjanii G. and Parvathi Rangasamy 142—155 6 New results on the InterCriteria Analysis Krassimir Atanassov 156—164 7 Software for Intercriteria Analysis results visualization in the intuitionistic fuzzy triangle: Opportunities for data interpretation Miroslav Genov and Veselina Bureva 165—179 8 InterCriteria Analysis as an intelligent tool for decision making: Investigation of Polish University Rankings Veselina Bureva, Maciej Krawczak and Tania Pencheva 180—189 9 QoS characterization of some service compositions based on intuitionistic fuzzy pairs Velin Andonov, Stoyan Poryazov and Emiliya Saranova 190—202

See also

• ICIFS conference publications
• International Workshop on Intuitionistic Fuzzy Sets
• International Workshop on Intuitionistic Fuzzy Sets and Generalized Nets