2017-09-24T06:42:41Z
http://ijfs.usb.ac.ir/?_action=export&rf=summon&issue=49
Iranian Journal of Fuzzy Systems
IJFS
1735-0654
1735-0654
2010
7
3
Cover vol.7, no.3
2010
10
30
0
http://ijfs.usb.ac.ir/article_2878_ed328232a3eebd2751711520eb119ed6.pdf
Iranian Journal of Fuzzy Systems
IJFS
1735-0654
1735-0654
2010
7
3
SOLVING BEST PATH PROBLEM ON MULTIMODAL TRANSPORTATION NETWORKS WITH FUZZY COSTS
Ali
Golnarkar
Ali Asghar
Alesheikh
Mohamad Reza
Malek
Numerous algorithms have been proposed to solve the shortest-pathproblem; many of them consider a single-mode network and crispcosts. Other attempts have addressed the problem of fuzzy costs ina single-mode network, the so-called fuzzy shortest-path problem(FSPP). The main contribution of the present work is to solve theoptimum path problem in a multimodal transportation network, inwhich the costs of the arcs are fuzzy values. Metropolitantransportation systems are multimodal in that they usually containmultiple modes, such as bus, metro, and monorail. The proposedalgorithm is based on the path algebra and dioid of $k$-shortestfuzzy paths. The approach considers the number of mode changes,the correct order of the modes used, and the modeling of two-waypaths. An advantage of the method is that there is no restrictionon the number and variety of the services to be considered. Totrack the algorithm step by step, it is applied to apseudo-multimodal network.
Transportation
Multimodal
Shortest path
Dioid
Fuzzy cost
Graph
GIS
2010
10
11
1
13
http://ijfs.usb.ac.ir/article_184_f7dc9d13a3aa140362cfd8b83d059aef.pdf
Iranian Journal of Fuzzy Systems
IJFS
1735-0654
1735-0654
2010
7
3
EXTRACTION-BASED TEXT SUMMARIZATION USING FUZZY
ANALYSIS
Farshad
Kyoomarsi
Hamid
Khosravi
Esfandiar
Eslami
Mohsen
Davoudi
Due to the explosive growth of the world-wide web, automatictext summarization has become an essential tool for web users. In this paperwe present a novel approach for creating text summaries. Using fuzzy logicand word-net, our model extracts the most relevant sentences from an originaldocument. The approach utilizes fuzzy measures and inference on theextracted textual information from the document to find the most significantsentences. Experimental results reveal that the proposed approach extractsthe most relevant sentences when compared to other commercially availabletext summarizers. Text pre-processing based on word-net and fuzzy analysisis the main part of our work.
Extraction
Fuzzy logic
Text summarization
Word-net
2010
10
09
15
32
http://ijfs.usb.ac.ir/article_185_f4f468a4b5cdae3e759f5223e8ee8f43.pdf
Iranian Journal of Fuzzy Systems
IJFS
1735-0654
1735-0654
2010
7
3
Numerical Methods for Fuzzy Linear Partial Differential Equations under new Definition for Derivative
Tofigh
Allahviranloo
M
Afshar Kermani
In this paper difference methods to solve "fuzzy partial differential equations" (FPDE) such as fuzzy hyperbolic and fuzzy parabolic equations are considered. The existence of the solution and stability of the method are examined in detail. Finally examples are presented to show that the Hausdorff distance between the exact solution and approximate solution tends to zero.
Fuzzy partial differential equation
Difference
method
2010
10
09
33
50
http://ijfs.usb.ac.ir/article_187_5c3ac0b4fba64396a03b7d6e2b726a71.pdf
Iranian Journal of Fuzzy Systems
IJFS
1735-0654
1735-0654
2010
7
3
Optimization of linear objective function subject to
Fuzzy relation inequalities constraints with max-product
composition
Elyas
Shivanian
Esmaile
Khorram
In this paper, we study the finitely many constraints of the fuzzyrelation inequality problem and optimize the linear objectivefunction on the region defined by the fuzzy max-product operator.Simplification operations have been given to accelerate theresolution of the problem by removing the components having noeffect on the solution process. Also, an algorithm and somenumerical and applied examples are presented to abbreviate andillustrate the steps of the problem resolution.
Linear objective function optimization
Fuzzy relation equations
Fuzzy relation inequalities
Max-product
composition
2010
10
09
51
71
http://ijfs.usb.ac.ir/article_189_86cbadca8c34e4a2064af076361a2647.pdf
Iranian Journal of Fuzzy Systems
IJFS
1735-0654
1735-0654
2010
7
3
A RELATED FIXED POINT THEOREM IN n FUZZY METRIC
SPACES
Faycel
Merghadi
Abdelkrim
Aliouche
We prove a related fixed point theorem for n mappings which arenot necessarily continuous in n fuzzy metric spaces using an implicit relationone of them is a sequentially compact fuzzy metric space which generalizeresults of Aliouche, et al. [2], Rao et al. [14] and [15].
Fuzzy metric space
Implicit relation
Sequentially compact fuzzy
metric space
Related fixed point
2010
10
09
73
86
http://ijfs.usb.ac.ir/article_191_dbb85a86732bdc74eac64f1c7bda6bb3.pdf
Iranian Journal of Fuzzy Systems
IJFS
1735-0654
1735-0654
2010
7
3
BEST SIMULTANEOUS APPROXIMATION IN FUZZY NORMED
SPACES
Mozafar
Goudarzi
S. Mansour
Vaezpour
The main purpose of this paper is to consider the t-best simultaneousapproximation in fuzzy normed spaces. We develop the theory of t-bestsimultaneous approximation in quotient spaces. Then, we discuss the relationshipin t-proximinality and t-Chebyshevity of a given space and its quotientspace.
t-best simultaneous approximation
t-proximinality
t-Chebyshevity
Quotient spaces
2010
10
09
87
96
http://ijfs.usb.ac.ir/article_192_36f51554bb9dcefe1c3bb01a0018eb3a.pdf
Iranian Journal of Fuzzy Systems
IJFS
1735-0654
1735-0654
2010
7
3
FUZZY BASIS OF FUZZY HYPERVECTOR SPACES
Reza
Ameri
omid reza
dehghan
The aim of this paper is the study of fuzzy basis and dimensionof fuzzy hypervector spaces. In this regard, first the notions of fuzzy linearindependence and fuzzy basis are introduced and then some related results areobtained. In particular, it is shown that for a large class of fuzzy hypervectorspace the fuzzy basis exist. Finally, dimension of a fuzzy hypervector space isdefined and the basic properties of that are investigated.
Fuzzy hypervector space
Fuzzy linear independence
Fuzzy basis
Dimension
2010
10
09
97
113
http://ijfs.usb.ac.ir/article_193_79de888ed0a4241f5c2fdeddeda24391.pdf
Iranian Journal of Fuzzy Systems
IJFS
1735-0654
1735-0654
2010
7
3
ON PRIME FUZZY BI-IDEALS OF SEMIGROUPS
Muhammad
Shabir
Young Bae
Jun
Mahwish
Bano
In this paper, we introduce and study the prime, strongly prime,semiprime and irreducible fuzzy bi-ideals of a semigroup. We characterize thosesemigroups for which each fuzzy bi-ideal is semiprime. We also characterizethose semigroups for which each fuzzy bi-ideal is strongly prime.
Prime fuzzy bi-ideals
Semiprime fuzzy bi-ideals
Strongly prime fuzzy
bi-ideals
Irreducible fuzzy bi-ideals
Strongly irreducible fuzzy bi-ideals
2010
10
09
115
128
http://ijfs.usb.ac.ir/article_194_99c31c34b2db27922370768b4f44c69c.pdf
Iranian Journal of Fuzzy Systems
IJFS
1735-0654
1735-0654
2010
7
3
SOME PROPERTIES OF FUZZY HILBERT SPACES AND NORM
OF OPERATORS
Abbas
Hasankhani
Akbar
Nazari
Morteza
Saheli
In the present paper we define the notion of fuzzy inner productand study the properties of the corresponding fuzzy norm. In particular, it isshown that the Cauchy-Schwarz inequality holds. Moreover, it is proved thatevery such fuzzy inner product space can be imbedded in a complete one andthat every subspace of a fuzzy Hilbert space has a complementary subspace.Finally, the notions of fuzzy boundedness and operator norm are introducedand the relationship between continuity and boundedness are investigated. Itis shown also that the space of all fuzzy bounded operators is complete.
Fuzzy norm
Fuzzy inner product
Fuzzy normed linear space
Fuzzy
boundedness
Strong continuity
2010
10
09
129
157
http://ijfs.usb.ac.ir/article_196_0e9bc69f70cca84530a0ad485e65cabb.pdf
Iranian Journal of Fuzzy Systems
IJFS
1735-0654
1735-0654
2010
7
3
Persian-translation vol.7,no.3
2010
10
30
161
169
http://ijfs.usb.ac.ir/article_2879_a5a23df0e4c295471d439dad9f14fd7b.pdf