University of Sistan and Baluchestan
Iranian Journal of Fuzzy Systems
1735-0654
13
1
2016
03
01
Cover vol. 13, no. 1, February 2016
0
EN
10.22111/ijfs.2016.2631
http://ijfs.usb.ac.ir/article_2631.html
http://ijfs.usb.ac.ir/article_2631_dc98dadae6fef4885991297e38de7d91.pdf
University of Sistan and Baluchestan
Iranian Journal of Fuzzy Systems
1735-0654
13
1
2016
02
28
Arithmetic Aggregation Operators for Interval-valued Intuitionistic Linguistic Variables and Application to Multi-attribute Group Decision Making
1
23
EN
Jiuying
Dong
School of Statistics, Jiangxi University of Finance and Economics,
Nanchang 330013, China and Research Center of Applied Statistics, Jiangxi University
of Finance and Economics, Nanchang 330013, China
jiuyingdong@126.com
Shu-Ping
Wan
College of Information Technology, Jiangxi University of Finance
and Economics, Nanchang 330013, China
10.22111/ijfs.2016.2284
The intuitionistic linguistic set (ILS) is an extension of linguisitc variable. To overcome the drawback of using single real number to represent membership degree and non-membership degree for ILS, the concept of interval-valued intuitionistic linguistic set (IVILS) is introduced through representing the membership degree and non-membership degree with intervals for ILS in this paper. The operation law, score function, accuracy function , and certainty function for interval-valued intuitionistic linguistic varibales (IVILVs) are defined. Hereby a lexicographic method is proposed to rank the IVILVs. Then, three kinds of interval-valued intuitionistic linguistic arithmetic average operators are defined, including the interval-valued intuitionistic linguistic weighted arithmetic average (IVILWAA) operator, interval-valued intuitionistic linguistic ordered weighted arithmetic (IVILOWA) operator, and interval-valued intuitionistic linguistic hybrid arithmetic (IVILHA) operator, and their desirable properties are also discussed. Based on the IVILWAA and IVILHA operators, two methods are proposed for solving multi-attribute group decision making problems with IVILVs. Finally, an investment selection example is illustrated to demonstrate the applicability and validity of the methods proposed in this paper.
Multi-attribute group decision making,Interval-valued intuitionistic linguistic set,Intuitionistic fuzzy set,Arithmetic operators
http://ijfs.usb.ac.ir/article_2284.html
http://ijfs.usb.ac.ir/article_2284_a8c89f45da6d004df613f2dedf70b6f9.pdf
University of Sistan and Baluchestan
Iranian Journal of Fuzzy Systems
1735-0654
13
1
2016
02
28
Decision making in medical investigations using new divergence measures for intuitionistic fuzzy sets
25
44
EN
A.
Srivastava
Department of Mathematics, Jaypee Institute of Information Tech-
nology, Noida, Uttar Pradesh
S.
Maheshwari
Department of Mathematics, Jaypee Institute of Information Tech-
nology, Noida, Uttar Pradesh
10.22111/ijfs.2016.2285
In recent times, intuitionistic fuzzy sets introduced by Atanassov has been one of the most powerful and flexible approaches for dealing with complex and uncertain situations of real world. In particular, the concept of divergence between intuitionistic fuzzy sets is important since it has applications in various areas such as image segmentation, decision making, medical diagnosis, pattern recognition and many more. The aim of this paper is to introduce a new divergence measure for Atanassov's intuitionistic fuzzy sets (textit{AIFS)}. The properties of the proposed divergence measure have been studied and the findings are applied in medical diagnosis of some diseases with a common set of symptoms.
Fuzzy sets,Intuitionistic fuzzy sets,Divergence measure,Medical diagnosis
http://ijfs.usb.ac.ir/article_2285.html
http://ijfs.usb.ac.ir/article_2285_c662f28b659682009004d67579186183.pdf
University of Sistan and Baluchestan
Iranian Journal of Fuzzy Systems
1735-0654
13
1
2016
02
28
Designing a model of intuitionistic fuzzy VIKOR in multi-attribute group decision-making problems
45
65
EN
Seyed Meysam
Mousavi
Department of Industrial Engineering, Faculty of Engi-
neering, Shahed University, Tehran, Iran
Behnam
Vahdani
Faculty of Industrial and Mechanical Engineering, Qazvin Branch,
Islamic Azad University, Qazvin, Iran
b.vahdani@ut.ac.ir
Shadan Sadigh
Behzadi
Department of Mathematics, Qazvin Branch, Islamic Azad
University, Qazvin, Iran
10.22111/ijfs.2016.2286
Multiple attributes group decision making (MAGDM) is regarded as the process of determining the best feasible solution by a group of experts or decision makers according to the attributes that represent different effects. In assessing the performance of each alternative with respect to each attribute and the relative importance of the selected attributes, quantitative/qualitative evaluations are often required to handle uncertainty, imprecise and inadequate information, which are well suited to represent with fuzzy values. This paper develops a VIKOR method based on intuitionistic fuzzy sets with multi-judges and multi-attributes in real-life situations. Intuitionistic fuzzy weighted averaging (IFWA) operator is used to aggregate individual judgments of experts to rate the importance of attributes and alternatives. Then, an intuitionistic ranking index is introduced to obtain a compromise solution to solve MAGDM problems. For application and validation, this paper presents two application examples and solves the practical portfolio selection and material handling selection problems to verify the proposed method. Finally, the intuitionistic fuzzy VIKOR method is compared with the existing intuitionistic fuzzy MAGDM method for two application examples, and their computational results are discussed.
Intuitionistic fuzzy sets,VIKOR method,Group decision making,Portfolio selection,Material handling selection
http://ijfs.usb.ac.ir/article_2286.html
http://ijfs.usb.ac.ir/article_2286_459119c7ea81ef16c1dc2c156e716ea4.pdf
University of Sistan and Baluchestan
Iranian Journal of Fuzzy Systems
1735-0654
13
1
2016
02
28
Piecewise cubic interpolation of fuzzy data based on B-spline basis functions
67
76
EN
Masoumeh
Zeinali
Faculty of mathematical sciences, University of Tabriz, Tabriz,
Iran
zeinali@tabrizu.ac.ir
Sedaghat
Shahmorad
Faculty of mathematical sciences, University of Tabriz, Tabriz,
Iran
shahmorad@tabrizu.ac.ir
Kamal
Mirnia
Faculty of mathematical sciences, University of Tabriz, Tabriz, Iran
mirnia-kam@tabrizu.ac.ir
10.22111/ijfs.2016.2287
In this paper fuzzy piecewise cubic interpolation is constructed for fuzzy data based on B-spline basis functions. We add two new additional conditions which guarantee uniqueness of fuzzy B-spline interpolation.Other conditions are imposed on the interpolation data to guarantee that the interpolation function to be a well-defined fuzzy function. Finally some examples are given to illustrate the proposed method.
Fuzzy number,Fuzzy interpolation,B-spline basis functions
http://ijfs.usb.ac.ir/article_2287.html
http://ijfs.usb.ac.ir/article_2287_4c7e790202a7257a98a74eed659ffe8c.pdf
University of Sistan and Baluchestan
Iranian Journal of Fuzzy Systems
1735-0654
13
1
2016
02
28
Further results on $L$-ordered fuzzifying convergence spaces
77
92
EN
Bin
Pang
Shenzhen Graduate School, Harbin Institute of Technology, 518055 Shen-
zhen, P.R. China
pangbin1205@163.com
Yi
Zhao
Shenzhen Graduate School, Harbin Institute of Technology, 518055 Shen-
zhen, P.R. China
zhaoyisz420@sohu.com
10.22111/ijfs.2016.2289
In this paper, it is shown that the category of $L$-ordered fuzzifying convergence spaces contains the category of pretopological $L$-ordered fuzzifying convergence spaces as a bireflective subcategory and the latter contains the category of topological $L$-ordered fuzzifying convergence spaces as a bireflective subcategory. Also, it is proved that the category of $L$-ordered fuzzifying convergence spaces can be embedded in the category of stratified $L$-ordered convergence spaces as a coreflective subcategory.
$L$-ordered fuzzifying convergence space,Stratified $L$-ordered convergence space,$L$-filter,Category theory
http://ijfs.usb.ac.ir/article_2289.html
http://ijfs.usb.ac.ir/article_2289_7edf80dce877328f54e067a17901d97c.pdf
University of Sistan and Baluchestan
Iranian Journal of Fuzzy Systems
1735-0654
13
1
2016
02
28
On The Relationships Between Types of $L$-convergence Spaces
93
103
EN
Qiu
Jin
Department of Mathematics, Liaocheng University, Liaocheng, P.R.China
jinqiu79@126.com
Lingqiang
Li
Department of Mathematics, Liaocheng University, Liaocheng, P.R.China
lilingqiang@126.com
Guangwu
Meng
Department of Mathematics, Liaocheng University, Liaocheng, P.R.China
10.22111/ijfs.2016.2290
This paper focuses on the relationships between stratified $L$-conver-gence spaces, stratified strong $L$-convergence spaces and stratifiedlevelwise $L$-convergence spaces. It has been known that: (1) astratified $L$-convergence space is precisely a left-continuousstratified levelwise $L$-convergence space; and (2) a stratifiedstrong $L$-convergence space is naturally a stratified $L$-convergence space, but the converse is not true generally.In this paper, a strong left-continuity condition for stratified levelwise $L$-convergence space is given. It is proved that a stratified strong $L$-convergence space is precisely a strongly left-continuous stratifiedlevelwise $L$-convergence space. Then a sufficient and necessary condition for a stratified $L$-convergence space to be a stratified strong $L$-convergence space is presented.
$L$-topology,Stratified $L$-filter,Stratified $L$-convergence space
http://ijfs.usb.ac.ir/article_2290.html
http://ijfs.usb.ac.ir/article_2290_71de97e8ff22e4ed37bf0b947a19e70a.pdf
University of Sistan and Baluchestan
Iranian Journal of Fuzzy Systems
1735-0654
13
1
2016
02
28
Correspondence between probabilistic norms and fuzzy norms
105
114
EN
Hua-Peng
Zhang
School of Science, Nanjing University of Posts and Telecommuni-
cations, Nanjing 210023, China
huapengzhang@163.com
10.22111/ijfs.2016.2291
In this paper, the connection between Menger probabilistic norms and H"{o}hle probabilistic norms is discussed. In addition, the correspondence between probabilistic norms and Wu-Fang fuzzy (semi-) norms is established. It is shown that a probabilistic norm (with triangular norm $min$) can generate a Wu-Fang fuzzy semi-norm and conversely, a Wu-Fang fuzzy norm can generate a probabilistic norm.
Probabilistic norm,Fuzzy norm
http://ijfs.usb.ac.ir/article_2291.html
http://ijfs.usb.ac.ir/article_2291_c21f5bbd1e1e97f9ce8d83b9838715be.pdf
University of Sistan and Baluchestan
Iranian Journal of Fuzzy Systems
1735-0654
13
1
2016
02
28
$L$-fuzzy approximation spaces and $L$-fuzzy topological spaces
115
129
EN
A. A.
Ramadan
Department of Mathematics, Faculty of Science, Beni-Suef Univer-
sity, Beni-Suef, Egypt
E. H.
Elkordy
Department of Mathematics, Faculty of Science, Beni-Suef Univer-
sity, Beni-Suef, Egypt
M.
El-Dardery
Department of Mathematics, Faculty of Science, Fayoum University,
Fayoum, Egypt
10.22111/ijfs.2016.2292
The $L$-fuzzy approximation operator associated with an $L$-fuzzy approximation space $(X,R)$ turns out to be a saturated $L$-fuzzy closure (interior) operator on a set $X$ precisely when the relation $R$ is reflexive and transitive. We investigate the relations between $L$-fuzzy approximation spaces and $L$-(fuzzy) topological spaces.
Complete residuated lattice,$L$-fuzzy approximation spaces,$L$-fuzzy topology,continuity
http://ijfs.usb.ac.ir/article_2292.html
http://ijfs.usb.ac.ir/article_2292_6313286d0ad372c6aaa06e50234658ed.pdf
University of Sistan and Baluchestan
Iranian Journal of Fuzzy Systems
1735-0654
13
1
2016
02
28
Commutative pseudo BE-algebras
131
144
EN
L. C.
Ciungu
Department of Mathematics, University of Iowa, 14 MacLean Hall,
Iowa City, Iowa 52242-1419, Usa
lcciungu@yahoo.com
10.22111/ijfs.2016.2293
The aim of this paper is to introduce the notion of commutative pseudo BE-algebras and investigate their properties.We generalize some results proved by A. Walendziak for the case of commutative BE-algebras.We prove that the class of commutative pseudo BE-algebras is equivalent to the class of commutative pseudo BCK-algebras. Based on this result, all results holding for commutative pseudo BCK-algebras also hold for commutative pseudo BE-algebras. For example, any finite commutative pseudo BE-algebra is a BE-algebra, and any commutative pseudo BE-algebra is a join-semilattice. Moreover, if a commutative pseudo BE-algebra is a meet-semilattice, then it is a distributive lattice. We define the pointed pseudo-BE algebras, and introduce and study the relative negations on pointed pseudo BE-algebras. Based on the relative negations we construct two closure operators on a pseudo BE-algebra.We also define relative involutive pseudo BE-algebras, we investigate their properties and prove equivalent conditions for a relative involutive pseudo BE-algebra.We define the relative Glivenko property for a relative good pseudo BE-algebra and show that any relativeinvolutive pseudo BE-algebra has the relative Glivenko property.
Pseudo BE-algebra,Pseudo BCK-algebra,Commutative pseudo BCK-algebra,Commutative pseudo BE-algebra,Pointed pseudo BE-algebra,Relative involutive pseudo BE-algebra,Relative Glivenko property
http://ijfs.usb.ac.ir/article_2293.html
http://ijfs.usb.ac.ir/article_2293_89fc397124e86bd8d36d0f72b59437ba.pdf
University of Sistan and Baluchestan
Iranian Journal of Fuzzy Systems
1735-0654
13
1
2016
02
28
Semi-G-filters, Stonean filters, MTL-filters, divisible filters, BL-filters and regular filters in residuated lattices
145
160
EN
D.
Busneag
Department of Mathematics, Faculty of Mathematics and Natural Sci-
ences, University of Craiova, Craiova, Romania
D.
Piciu
Department of Mathematics, Faculty of Mathematics and Natural Sciences,
University of Craiova, Craiova, Romania
10.22111/ijfs.2016.2294
At present, the filter theory of $BL$textit{-}algebras has been widelystudied, and some important results have been published (see for examplecite{4}, cite{5}, cite{xi}, cite{6}, cite{7}). In other works such ascite{BP}, cite{vii}, cite{xiii}, cite{xvi} a study of a filter theory inthe more general setting of residuated lattices is done, generalizing thatfor $BL$textit{-}algebras. Note that filters are also characterized byvarious types of fuzzy sets. Most of such characterizations is trivial butsome are nontrivial, for example characterizations obtained in cite{xm}.Both situation have revealed a rich range of classes of filters: Boolean,implicative, Heyting, positive implicative, fantastic (or MV-filter), etc.In this paper we work in the general cases of residuated lattices and put inevidence new types of filters in a residuated lattice (in the spirit of cite{mvl}): semi-G-filterstextit{, }Stonean filters, divisible filters,BL-filters and regular filters.
Residuated lattice,Boolean algebra,BL-algebra,MV-algebra,MTL-algebra,Divisible residuated lattice,Regular residuated lattice,Deductive system,Filter,Boolean filter,MTL-filter,Divisible filter,BL-filter,MV-filter,Semi-G-filter,Stonean filter,Regular filter
http://ijfs.usb.ac.ir/article_2294.html
http://ijfs.usb.ac.ir/article_2294_d8dfab9476be9a9b5c4b01faa4c2942b.pdf
University of Sistan and Baluchestan
Iranian Journal of Fuzzy Systems
1735-0654
13
1
2016
03
01
Persian-translation vol. 13, no. 1, February 2016
162
172
EN
10.22111/ijfs.2016.2632
http://ijfs.usb.ac.ir/article_2632.html
http://ijfs.usb.ac.ir/article_2632_c03568e8d3443db7f6176c58d18a986b.pdf