Extension of the TOPSIS method for decision-making problems with fuzzy data
|
|
- Nelson Lee
- 6 years ago
- Views:
Transcription
1 Applied Mathematics and Computation 181 (2006) Extension of the TOPSIS method for decision-making problems with fuzzy data G.R. Jahanshahloo a, F. Hosseinzadeh Lotfi a, M. Izadikhah b, * a Department of Math, Science and Research Branch, Islamic Azad University, Tehran , Iran b Department of Math, Islamic Azad University, P.O. Box 38135/567, Arak, Iran Abstract Decision making problem is the process of finding the best option from all of the feasible alternatives. In this paper, from among multicriteria models in making complex decisions and multiple attribute models for the most preferable choice, technique for order preference by similarity to ideal solution (TOPSIS) approach has been dealt with. In real-word situation, because of incomplete or non-obtainable information, the data (attributes) are often not so deterministic, there for they usually are fuzzy/imprecise. Therefore, the aim of this paper is to extend the TOPSIS method to decision-making problems with fuzzy data. In this paper, the rating of each alternative and the weight of each criterion are expressed in triangular fuzzy numbers. The normalized fuzzy numbers is calculated by using the concept of a-cuts. Finally, a numerical experiment is used to illustrate the procedure of the proposed approach at the end of this paper. Ó 2006 Published by Elsevier Inc. Keywords: MCDM; TOPSIS; Fuzzy numbers; Fuzzy positive ideal solution; Fuzzy negative ideal solution 1. Introduction Multi-criteria decision making has been one of the fastest growing areas during the last decades depending on the changings in the business sector. Decision maker(s) need a decision aid to decide between the alternatives and mainly excel less preferrable alternatives fast. With the help of computers the decision making methods have found great acceptance in all areas of the decision making processes. Since multicriteria decision making (MCDM) has found acceptance in areas of operation research and management science, the discipline has created several methodologies. Especially in the last years, where computer usage has increased significantly, the application of MCDM methods has considerably become easier for the users the decision makers as the application of most of the methods are corresponded with complex mathematics. In discrete alternative multicriteria decision problems, the primary concern for the decision aid is the following: * Corresponding author. address: m_izadikhah@yahoo.com (M. Izadikhah) /$ - see front matter Ó 2006 Published by Elsevier Inc. doi: /j.amc
2 G.R. Jahanshahloo et al. / Applied Mathematics and Computation 181 (2006) (1) choosing the most preferred alternative to the decision maker (DM), (2) ranking alternatives in order of importance for selection problems, or (3) screening alternatives for the final decision. The general concepts of domination structures and non-dominated solutions play an important role in describing the decision problems and the decision maker s revealed preferences described above [10]. So far, various approaches have been developed as the decision aid (see, for example [9]). That is, for many such problems, the decision maker wants to solve a multiple criteria decision making (MCDM) problem. In MCDM problems, there does not necessarily exist the solution that optimizes all objectives functions, and then the concept which is called Pareto optimal solution (or efficient solution) is introduced. Usually, there exist a number of Pareto optimal solutions, which are considered as candidates of final decision making solution. It is an issue how decision makers decide one from the set of Pareto optimal solutions as the final solution (see, for more details [6]). A MCDM problem can be concisely expressed in matrix format as W ¼½w 1 ; w 2 ;...; w n Š; where A 1,A 2,...,A m are possible alternatives among which decision makers have to choose, C 1,C 2,...,C n are criteria with which alternative performance are measured, x ij is the rating of alternative A i with respect to criterion C j, w j is the weight of criterion C j. The main steps of multiple criteria decision making are the following: (a) establishing system evaluation criteria that relate system capabilities to goals; (b) developing alternative systems for attaining the goals (generating alternatives); (c) evaluating alternatives in terms of criteria (the values of the criterion functions); (d) applying a normative multicriteria analysis method; (e) accepting one alternative as optimal (preferred); (f) if the final solution is not accepted, gather new information and go into the next iteration of multicriteria optimization. Steps (a) and (e) are performed at the upper level, where decision makers have the central role, and the other steps are mostly engineering tasks. For step (d), a decision maker should express his/her preferences in terms of the relative importance of criteria, and one approach is to introduce criteria weights. This weights in MCDM do not have a clear economic significance, but their use provides the opportunity to model the actual aspects of decision making (the preference structure). Technique for order performance by similarity to ideal solution (TOPSIS) [7], one of known classical MCDM method, was first developed by Hwang and Yoon [4] for solving a MCDM problem. TOPSIS, known as one of the most classical MCDM methods, is based on the idea, that the chosen alternative should have the shortest distance from the positive ideal solution and on the other side the farthest distance of the negative ideal solution. The TOPSIS-method will be applied to a case study, which is described in detail. In classical MCDM methods, the ratings and the weights of the criteria are known precisely [3,4]. A survey of the methods has been presented in Hwang and Yoon [4]. In the process of TOPSIS, the performance ratings and the weights of the criteria are given as exact values. Recently, Abo-sinna and Amer [1] extend TOPSIS approach to solve multi-objective nonlinear programming problems. Jahanshahloo et al. [5] extend the concept of TOPSIS to develop a methodology for solving multi-criteria decision-making problems with interval data. In real-word situation, because of incomplete or non-obtainable information, for example, human judgements including preferences are often vague and cannot estimate his preference with an exact numerical data, the data (attributes) are often not so deterministic, there for they usually are fuzzy/imprecise [2,11], so, we try to extend TOPSIS for fuzzy data.
3 1546 G.R. Jahanshahloo et al. / Applied Mathematics and Computation 181 (2006) The rest of the paper is organized as follows: in the following section, first, we discus preliminary definitions of fuzzy data, then, we briefly introduce the original TOPSIS method. In Section 3, we introduce MCDM problems with fuzzy data, then, we present an algorithm to extend TOPSIS to deal with fuzzy data. In Section 4, we illustrate our proposed algorithmic method with an example. The final section concludes. 2. Background 2.1. Preliminary definitions of fuzzy data Let X be a classical set of objects, called the universe, whose generic elements are denoted by x. The membership in a crisp subset of X is often viewed as characteristic function l A from X to {0,1} such that: 1 if and only if x 2 A; l A ðxþ ¼ 0 otherwise; where {0,1} is called a valuation set. If the valuation set is allowed to be the real interval [0, 1], A is called a fuzzy set and denoted by A ~ and l AðxÞ ~ is the degree of membership of x in A. ~ Definition 1. If ~A be a fuzzy set, then ~A is completely characterized by the set of ordered pairs [8]: ~A ¼fðx; l AðxÞÞjx ~ 2 X g: Definition 2 (a-level set or a-cut). The a-cut of a fuzzy set ~A is a crisp subset of X and is denoted by [8]: ½~AŠ a ¼fxjl A ~ ðxþ P ag; where l A ~ ðxþ is the membership function of ~A and a 2 [0, 1]. The lower and upper points of any a-cut, ½ AŠ ~ a, are represented by inf½ AŠ ~ a and sup½ AŠ ~ a, respectively, and we suppose that both are finite. For convenient, we show inf½~aš a with ½~AŠ L a and sup½ ~AŠ a with ½~AŠ U a (see Fig. 1). Definition 3 (Normality). A fuzzy set A ~ is normal if and only if sup x l A ~ ðxþ ¼1: Definition 4 (Convexity). A fuzzy set ~A in X is convex if and only if for every pair of point x 1 and x 2 in X, the membership function of ~A satisfies the inequality l Aðdx 1 ~ þð1 dþx 2 Þ P minðl Aðx 1 ~ Þ; l Aðx 2 ~ ÞÞ; where d 2 [0, 1]. Alternatively, a fuzzy set is convex if all a-level sets are convex. Definition 5 (Fuzzy number). A fuzzy number ~A is a convex normalized fuzzy set ~A of the real line R with continuous membership function. Fig. 1. An example of a-cut.
4 G.R. Jahanshahloo et al. / Applied Mathematics and Computation 181 (2006) Fig. 2. A triangular fuzzy number ~A. Definition 6 (Triangular fuzzy numbers). The triangular fuzzy numbers can be denoted as ~A ¼ða; m; nþ, where a is the central value ðl ~A ðaþ ¼1Þ, m is the left spread and n is the right spread (see Fig. 2). Definition 7 (Multiplication of triangular fuzzy numbers). Suppose that we have two triangular fuzzy numbers ~A and ~B such that A ~ ¼ða; m; nþ and ~B ¼ðb; s; rþ, then, the multiplication of the fuzzy numbers A ~ and ~B is defined as follows [8]: 8 >< ðab; as þ bm ms; ar þ bn þ nrþ if ~A > 0; ~B > 0; ~AðÞ~B ¼ ðab; ar þ bm þ mr; as bn þ snþ if ~A < 0; ~B > 0; >: ðab; ar bn nr; as bm þ nrþ if ~A < 0; ~B < 0: Definition 8. A fuzzy number ~ A is called positive fuzzy number if l ~ AðxÞ ¼0 for all x <0; 6 1 for a 2 [0, 1], then ~A is called a nor- Definition 9. If ~A is a triangular fuzzy number and ½~AŠ L a > 0 and ½ ~AŠ U a malized positive triangular fuzzy number. Definition 10. Let ~A ¼ða; m; nþ, ~B ¼ðb; s; rþ be two triangular fuzzy numbers, then the distance between them using vertex method is defined as rffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi 1 dð~a; ~BÞ ¼ 3 ½ða bþ2 þða b mþsþ 2 þða bþn rþ 2 Š: Remark 1. If ~A ¼½½~AŠ L a ; ½ ~AŠ U a Š, then by choosing a = 1 we can identify the central value of ~A, and by a =0we can identify the left and right spreads of ~A TOPSIS method TOPSIS (technique for order preference by similarity to an ideal solution) method is presented in Chen and Hwang [2], with reference to Hwang and Yoon [4]. TOPSIS is a multiple criteria method to identify solutions from a finite set of alternatives. The basic principle is that the chosen alternative should have the shortest distance from the positive ideal solution and the farthest distance from the negative ideal solution. The procedure of TOPSIS can be expressed in a series of steps: (1) Calculate the normalized decision matrix. The normalized value n ij is calculated as s ffiffiffiffiffiffiffiffiffiffiffiffi X m n ij ¼ x ij ; i ¼ 1;...; m; j ¼ 1;...; n: i¼1 x 2 ij (2) Calculate the weighted normalized decision matrix. The weighted normalized value v ij is calculated as v ij ¼ w j n ij ; i ¼ 1;...; m; j ¼ 1;...; n; where w j is the weight of the ith attribute or criterion, and P n j¼1 w j ¼ 1.
5 1548 G.R. Jahanshahloo et al. / Applied Mathematics and Computation 181 (2006) (3) Determine the positive ideal and negative ideal solution A þ ¼fv þ 1 ;...; vþ n g¼fðmax j A ¼fv 1 ;...; v n g¼fðmin j v ij ji 2 IÞ; ðmin v ij ji 2 JÞg; j v ij ji 2 IÞ; ðmax v ij ji 2 JÞg; j where I is associated with benefit criteria, and J is associated with cost criteria. (4) Calculate the separation measures, using the n-dimensional Euclidean distance. The separation of each alternative from the ideal solution is given as ( )1 d þ i ¼ Xn 2 ðv ij v þ j Þ2 ; i ¼ 1;...; m; j¼1 Similarly, the separation from the negative ideal solution is given as ( )1 d i ¼ Xn 2 ðv ij v j Þ2 ; i ¼ 1;...; m; j¼1 (5) Calculate the relative closeness to the ideal solution. The relative closeness of the alternative A i with respect to A + is defined as R i ¼ d i =ðd þ i þ d i Þ; i ¼ 1;...; m: Since d i P 0andd þ i P 0, then, clearly, R i 2 [0,1]. (6) Rank the preference order. For ranking alternatives using this index, we can rank alternatives in decreasing order. The basic principle of the TOPSIS method is that the chosen alternative should have the shortest distance from the positive ideal solution and the farthest distance from the negative ideal solution. The TOPSIS method introduces two reference points, but it does not consider the relative importance of the distances from these points. 3. TOPSIS method with fuzzy data In real-word situation, because of incomplete or non-obtainable information, the data (attributes) are often not so deterministic, there for they usually are fuzzy/impresice, so, we try to extend TOPSIS for fuzzy data. Suppose A 1,A 2,...,A m are m possible alternatives among which decision makers have to choose, C 1,C 2,...,C n are criteria with which alternative performance are measured, ~x ij is the rating of alternative A i with respect to criterion C j and is a fuzzy number. A MCDM problem with fuzzy data can be concisely expressed in matrix format (namely, fuzzy decision matrix) as ~W ¼½~w 1 ; ~w 2 ;...; ~w n Š; where ~w j is the weight of criterion C j and is a normalized fuzzy number. The approach to extend the TOPSIS method to the fuzzy data is proposed in this section. First step is, identification the evaluation criteria. Step 2 is, generating alternatives. Step 3 is, evaluating alternatives in terms of criteria (the values of the criterion functions which are fuzzy). Step 4 is, identifying the weight of criteria.
6 Step 5. Construct the fuzzy decision matrix. In fuzzy decision matrix, we suppose that, each ~x ij is triangular fuzzy number, i.e., ~x ij ¼ðx ij ; a ij ; b ij Þ. Step 6. We calculate the normalized fuzzy decision matrix as follows: First, for each fuzzy number ~x ij ¼ðx ij ; a ij ; b ij Þ, we calculate the set of a-cut as ~x ij ¼ ½~x ij Š L a ; ½~x ijš U a ; a 2½0; 1Š: Therefore, each fuzzy number ~x ij is transform to an interval, now by an approach proposed in Jahanshahloo et al. [5] we can transform this interval in to normalized interval as follows: s ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi ½~n ij Š L a ¼½~x X ijš L m a ð½~x ij Š L a Þ2 þð½~x ij Š U a Þ2 ; i ¼ 1;...; m; j ¼ 1;...; n; i¼1 s ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi ½~n ij Š U a ¼½~x X ijš U m a ð½~x ij Š L a Þ2 þð½~x ij Š U a Þ2 ; i ¼ 1;...; m; j ¼ 1;...; n i¼1 now, interval ½½~n ij Š L a ; ½~n ijš U a Š is normalized of interval ½½~x ijš L a ; ½~x ijš U a Š. According to Remark 1 we can transform this normalized interval in to a fuzzy number such as ~N ij ¼ðn ij ; a ij ; b ij Þ such that, n ij is obtained when a = 1 i.e., n ij ¼½~n ij Š L a¼1 ¼½~n ijš U a¼1, also by setting a = 0 we have ½~n ijš L a¼0 ¼ n ij a ij and ½~n ij Š U a¼0 ¼ n ij þ b ij then a ij ¼ n ij ½~n ij Š L a¼0 ; b ij ¼½~n ij Š U a¼0 n ij and ~N ij is a normalized positive triangular fuzzy number i.e., ~N ij is normalized of fuzzy number ~x ij. Now, we can work with these normalized fuzzy numbers. Step 7. By considering the different importance of each criterion, we can construct the weighted normalized fuzzy decision matrix as: ~v ij ¼ ~N ij :~w j ; where ~w j is the weight of jth attribute or criterion. Step 8. Now, each ~v ij is normalized fuzzy numbers and their ranges is belong to [0,1]. So, we can identify fuzzy positive ideal solution and fuzzy negative ideal solution as: ~A þ ¼ð~v þ 1 ;...; ~vþ n Þ; ~A ¼ð~v 1 ;...; ~v n Þ; where ~v þ i ¼ð1; 0; 0Þ and ~v i ¼ð0; 0; 0Þ; i ¼ 1;...; n for each criteria (benefit or cost criteria). Step 9. The separation of each alternative from the fuzzy positive ideal solution, using the distance measurement between two fuzzy number (see Definition 8) can be currently calculated as: ~d þ i ¼ Xn j¼1 dð~v ij ; ~v þ ij Þ; i ¼ 1;...; m: Similarly, the separation from the fuzzy negative ideal solution can be calculated as: ~d i ¼ Xn j¼1 G.R. Jahanshahloo et al. / Applied Mathematics and Computation 181 (2006) dð~v ij ; ~v ij Þ; i ¼ 1;...; m: Step 10. A closeness coefficient is defined to determine the ranking order of all alternatives once the d ~ þ i and ~d i of each alternative A i has been calculated. The relative closeness of the alternative A i with respect to A ~ þ is defined as: ~R i ¼ d ~ i =ð d ~ þ i þ d ~ i Þ; i ¼ 1;...; m:
7 1550 G.R. Jahanshahloo et al. / Applied Mathematics and Computation 181 (2006) Obviously, an alternative A i is closer to the ~A þ and farther from ~A as ~R i approaches to 1. Therefore, according to the closeness coefficient, we can determine the ranking order of all alternatives and select the best one from among a set of feasible alternatives. 4. Numerical example In this section, we work out a numerical example to illustrate the TOPSIS method for decision-making problems with fuzzy data. Suppose that we have three alternatives A 1, A 2 and A 3 among which decision makers have to choose and, also, five benefit criteria C 1,...,C 5, are identified as the evaluation criteria for these alternatives. These data and also the vector of corresponding weight of each criteria are given in Table 1. The Table 1 The fuzzy decision matrix and fuzzy weights of three alternatives C 1 C 2 C 3 C 4 C 5 A 1 (7.7, 2, 3.6) (7, 2, 2) (7.7, 2, 1.3) (9.67, 1.34, 0.33) (5, 2, 2) A 2 (8.3, 2, 1.4) (10, 1, 0) (9.7, 1.4, 0.3) (10, 1, 0) (9, 2, 1) A 3 (8, 1.7, 1) (9, 2, 1) (9, 2, 1) (9, 2, 1) (8.3, 2, 1.4) Weight (0.9, 0.2, 0.1) (1, 0.1, 0) (0.93, 0.16, 0.07) (1, 0.1, 0) (0.63, 0.2, 0.2) Table 2 The normalized fuzzy decision matrix C 1 C 2 C 3 C 4 C 5 A 1 (0.39, 0.09, 0.1) (0.33, 0.09, 0.1) (0.36, 0.09, 0.07) (0.41, 0.04, 0.04) (0.27, 0.11, 0.11) A 2 (0.42, 0.14, 0.09) (0.47, 0.04, 0) (0.45, 0.05, 0.03) (0.43, 0.03, 0) (0.48, 0.1, 0.06) A 3 (0.41, 0.08, 0.06) (0.42, 0.08, 0.06) (0.42, 0.08, 0.06) (0.38, 0.07, 0.07) (0.44, 0.1, 0.09) Table 3 The weighted normalized fuzzy decision matrix C 1 C 2 C 3 C 4 C 5 A 1 (0.35, 0.14, 0.14) (0.33, 0.11, 0.1) (0.33, 0.12, 0.1) (0.41, 0.08, 0.04) (0.17, 0.1, 0.15) A 2 (0.38, 0.18, 0.13) (0.48, 0.08, 0) (0.42, 0.11, 0.06) (0.45, 0.09, 0) (0.3, 0.14, 0.15) A 3 (0.37, 0.14, 0.1) (0.42, 0.11, 0.06) (0.39, 0.13, 0.09) (0.38, 0.1, 0.07) (0.28, 0.13, 0.16) Table 4 Closeness coefficients ~d j ~d þ j A A A Table 5 Ranking ~R i Rank A A A
8 normalized fuzzy decision matrix and weighted normalized fuzzy decision matrix are given in Tables 2 and 3, respectively. The closeness coefficients, which are defined to determine the ranking order of all alternatives by calculating the distance to both the fuzzy positive-ideal solution and the fuzzy negative-ideal solution simultaneously, are given in Table 4. Now a preference order can be ranked according to the order of ~R i. Therefore, the best alternative is the one with the shortest distance to the fuzzy positive ideal solution and with the longest distance to the fuzzy negative ideal solution. According to the closeness coefficient, ranking the preference order of these alternatives is as Table 5. The proposed approach presented in this paper can be applied to many areas of management decision problems. 5. Conclusion Considering the fact that, in some cases, determining precisely the exact value of the attributes is difficult and that, their values are considered as fuzzy data, therefore, in this paper TOPSIS for fuzzy data has been extended and an algorithm to determine the most preferable choice among all possible choices, when data is fuzzy, is presented. The normalized fuzzy decision matrix is calculated by using the concept of a-cuts. In this approach, as well as considering the distance of an alternative from the fuzzy positive ideal solution, its distance from the fuzzy negative ideal solution is also considered. That is to say, the less the distance of the alternative under evaluation from the fuzzy positive ideal solution and the more its distance from the fuzzy negative ideal solution, the better its ranking. References G.R. Jahanshahloo et al. / Applied Mathematics and Computation 181 (2006) [1] M.A. Abo-Sinna, A.H. Amer, Extensions of TOPSIS for multi-objective large-scale nonlinear programming problems, Applied Mathematics and Computation 162 (2005) [2] S.J. Chen, C.L. Hwang, Fuzzy Multiple Attribute Decision Making: Methods and Applications, Springer, Berlin, [3] J.S. Dyer, P.C. Fishburn, R.E. Steuer, J. Wallenius, S. Zionts, Multiple criteria decision making, multiattribute utility theory: the next ten years, Management Science 38 (5) (1992) [4] C.L. Hwang, K. Yoon, Multiple Attribute Decision Making Methods and Applications, Springer, Berlin Heidelberg, [5] G.R. Jahanshahloo, F. Hosseinzadeh Lotfi, M. Izadikhah, An algorithmic method to extend TOPSIS for decision-making problems with interval data, Applied Mathematics and Computation (2005). [6] P. Korhonen, J. Wallenius, S. Zionts, Solving the discrete multiple criteria problem using convex cones, Management Science 30 (1981) [7] Y.J. Lai, T.Y. Liu, C.L. Hwang, TOPSIS for MODM, European Journal of Operational Research 76 (3) (1994) [8] Y.J. Lai, T.Y. Liu, C.L. Hwang, Fuzzy mathematical programming, methods and applications, Springer, Berlin/Heidelberg, [9] D.L. Olson, Decision Aids for Selection Problems, Springer, New York, [10] P.L. Yu, Multiple-Criteria Decision Making, Concepts, Techniques, and Extensions, Plenum Press, New York, [11] L.A. Zadeh, Fuzzy sets, Information and Control 8 (1965)
An algorithmic method to extend TOPSIS for decision-making problems with interval data
Applied Mathematics and Computation 175 (2006) 1375 1384 www.elsevier.com/locate/amc An algorithmic method to extend TOPSIS for decision-making problems with interval data G.R. Jahanshahloo, F. Hosseinzadeh
More informationMultiple Attributes Decision Making Approach by TOPSIS Technique
Multiple Attributes Decision Making Approach by TOPSIS Technique P.K. Parida and S.K.Sahoo Department of Mathematics, C.V.Raman College of Engineering, Bhubaneswar-752054, India. Institute of Mathematics
More informationASIAN JOURNAL OF MANAGEMENT RESEARCH Online Open Access publishing platform for Management Research
ASIAN JOURNAL OF MANAGEMENT RESEARCH Online Open Access publishing platform for Management Research Copyright 2010 All rights reserved Integrated Publishing association Review Article ISSN 2229 3795 The
More informationA MODIFICATION OF FUZZY TOPSIS BASED ON DISTANCE MEASURE. Dept. of Mathematics, Saveetha Engineering College,
International Journal of Pure and pplied Mathematics Volume 116 No. 23 2017, 109-114 ISSN: 1311-8080 (printed version; ISSN: 1314-3395 (on-line version url: http://www.ijpam.eu ijpam.eu MODIFICTION OF
More informationFuzzy linear programming technique for multiattribute group decision making in fuzzy environments
Information Sciences 158 (2004) 263 275 www.elsevier.com/locate/ins Fuzzy linear programming technique for multiattribute group decision making in fuzzy environments Deng-Feng Li *, Jian-Bo Yang Manchester
More informationFuzzy bi-level linear programming problem using TOPSIS approach
FUZZY OPTIMIZATION AND MODELLING (08) -0 Contents lists available at FOMJ Fuzzy Optimization and Modelling Journal homepage: http://fomj.qaemiau.ac.ir/ Fuzzy bi-level linear programming problem using TOPSIS
More informationIntegration of Fuzzy Shannon s Entropy with fuzzy TOPSIS for industrial robotic system selection
JIEM, 2012 5(1):102-114 Online ISSN: 2013-0953 Print ISSN: 2013-8423 http://dx.doi.org/10.3926/jiem.397 Integration of Fuzzy Shannon s Entropy with fuzzy TOPSIS for industrial robotic system selection
More informationRanking Efficient Units in DEA. by Using TOPSIS Method
Applied Mathematical Sciences, Vol. 5, 0, no., 805-85 Ranking Efficient Units in DEA by Using TOPSIS Method F. Hosseinzadeh Lotfi, *, R. Fallahnead and N. Navidi 3 Department of Mathematics, Science and
More informationOn the Solution of a Special Type of Large Scale. Integer Linear Vector Optimization Problems. with Uncertain Data through TOPSIS Approach
Int. J. Contemp. Math. Sciences, Vol. 6, 2011, no. 14, 657 669 On the Solution of a Special Type of Large Scale Integer Linear Vector Optimization Problems with Uncertain Data through TOPSIS Approach Tarek
More informationFuzzy Variable Linear Programming with Fuzzy Technical Coefficients
Sanwar Uddin Ahmad Department of Mathematics, University of Dhaka Dhaka-1000, Bangladesh sanwar@univdhaka.edu Sadhan Kumar Sardar Department of Mathematics, University of Dhaka Dhaka-1000, Bangladesh sadhanmath@yahoo.com
More informationChapter 2 Matrix Games with Payoffs of Triangular Fuzzy Numbers
Chapter 2 Matrix Games with Payoffs of Triangular Fuzzy Numbers 2.1 Introduction The matrix game theory gives a mathematical background for dealing with competitive or antagonistic situations arise in
More informationChapter 2 Intuitionistic Fuzzy Aggregation Operators and Multiattribute Decision-Making Methods with Intuitionistic Fuzzy Sets
Chapter 2 Intuitionistic Fuzzy Aggregation Operators Multiattribute ecision-making Methods with Intuitionistic Fuzzy Sets 2.1 Introduction How to aggregate information preference is an important problem
More informationAN APPROXIMATION APPROACH FOR RANKING FUZZY NUMBERS BASED ON WEIGHTED INTERVAL - VALUE 1.INTRODUCTION
Mathematical and Computational Applications, Vol. 16, No. 3, pp. 588-597, 2011. Association for Scientific Research AN APPROXIMATION APPROACH FOR RANKING FUZZY NUMBERS BASED ON WEIGHTED INTERVAL - VALUE
More informationOptimization of fuzzy multi-company workers assignment problem with penalty using genetic algorithm
Optimization of fuzzy multi-company workers assignment problem with penalty using genetic algorithm N. Shahsavari Pour Department of Industrial Engineering, Science and Research Branch, Islamic Azad University,
More informationIJISET - International Journal of Innovative Science, Engineering & Technology, Vol. 1 Issue 3, May
Optimization of fuzzy assignment model with triangular fuzzy numbers using Robust Ranking technique Dr. K. Kalaiarasi 1,Prof. S.Sindhu 2, Dr. M. Arunadevi 3 1 Associate Professor Dept. of Mathematics 2
More informationExtended TOPSIS model for solving multi-attribute decision making problems in engineering
Decision Science Letters 6 (2017) 365 376 Contents lists available at GrowingScience Decision Science Letters homepage: www.growingscience.com/dsl Extended TOPSIS model for solving multi-attribute decision
More informationExtensions of the multicriteria analysis with pairwise comparison under a fuzzy environment
International Journal of Approximate Reasoning 43 (2006) 268 285 www.elsevier.com/locate/ijar Extensions of the multicriteria analysis with pairwise comparison under a fuzzy environment Ming-Shin Kuo a,
More informationComputational efficiency analysis of Wu et al. s fast modular multi-exponentiation algorithm
Applied Mathematics and Computation 190 (2007) 1848 1854 www.elsevier.com/locate/amc Computational efficiency analysis of Wu et al. s fast modular multi-exponentiation algorithm Da-Zhi Sun a, *, Jin-Peng
More informationRanking of Octagonal Fuzzy Numbers for Solving Multi Objective Fuzzy Linear Programming Problem with Simplex Method and Graphical Method
International Journal of Scientific Engineering and Applied Science (IJSEAS) - Volume-1, Issue-5, August 215 ISSN: 2395-347 Ranking of Octagonal Fuzzy Numbers for Solving Multi Objective Fuzzy Linear Programming
More informationA Fuzzy Representation for the Semantics of Hesitant Fuzzy Linguistic Term Sets
A Fuzzy Representation for the Semantics of Hesitant Fuzzy Linguistic Term Sets Rosa M. Rodríguez, Hongbin Liu and Luis Martínez Abstract Recently, a concept of hesitant fuzzy linguistic term sets (HFLTS)
More informationRank Similarity based MADM Method Selection
Rank Similarity based MADM Method Selection Subrata Chakraborty School of Electrical Engineering and Computer Science CRC for Infrastructure and Engineering Asset Management Queensland University of Technology
More informationA Fuzzy Model for a Railway-Planning Problem
Applied Mathematical Sciences, Vol. 10, 2016, no. 27, 1333-1342 HIKARI Ltd, www.m-hikari.com http://dx.doi.org/10.12988/ams.2016.63106 A Fuzzy Model for a Railway-Planning Problem Giovanni Leonardi University
More informationTOPSIS Modification with Interval Type-2 Fuzzy Numbers
BULGARIAN ACADEMY OF SCIENCES CYBERNETICS AND INFORMATION TECHNOLOGIES Volume 6, No 2 Sofia 26 Print ISSN: 3-972; Online ISSN: 34-48 DOI:.55/cait-26-2 TOPSIS Modification with Interval Type-2 Fuzzy Numbers
More informationSolution of m 3 or 3 n Rectangular Interval Games using Graphical Method
Australian Journal of Basic and Applied Sciences, 5(): 1-10, 2011 ISSN 1991-8178 Solution of m or n Rectangular Interval Games using Graphical Method Pradeep, M. and Renukadevi, S. Research Scholar in
More informationIZAR THE CONCEPT OF UNIVERSAL MULTICRITERIA DECISION SUPPORT SYSTEM
Jana Kalčevová Petr Fiala IZAR THE CONCEPT OF UNIVERSAL MULTICRITERIA DECISION SUPPORT SYSTEM Abstract Many real decision making problems are evaluated by multiple criteria. To apply appropriate multicriteria
More informationSaudi Journal of Business and Management Studies. DOI: /sjbms ISSN (Print)
DOI: 10.21276/sjbms.2017.2.2.5 Saudi Journal of Business and Management Studies Scholars Middle East Publishers Dubai, United Arab Emirates Website: http://scholarsmepub.com/ ISSN 2415-6663 (Print ISSN
More informationExpert Systems with Applications
Expert Systems with Applications 39 (2012) 3283 3297 Contents lists available at SciVerse ScienceDirect Expert Systems with Applications journal homepage: www.elsevier.com/locate/eswa Fuzzy decision support
More informationA new method for solving fuzzy linear fractional programs with Triangular Fuzzy numbers
A new method for solving fuzzy linear fractional programs with Triangular Fuzzy numbers Sapan Kumar Das A 1, S. A. Edalatpanah B 2 and T. Mandal C 1 1 Department of Mathematics, National Institute of Technology,
More information2 Dept. of Computer Applications 3 Associate Professor Dept. of Computer Applications
International Journal of Computing Science and Information Technology, 2014, Vol.2(2), 15-19 ISSN: 2278-9669, April 2014 (http://ijcsit.org) Optimization of trapezoidal balanced Transportation problem
More informationMethod and Algorithm for solving the Bicriterion Network Problem
Proceedings of the 00 International Conference on Industrial Engineering and Operations Management Dhaka, Bangladesh, anuary 9 0, 00 Method and Algorithm for solving the Bicriterion Network Problem Hossain
More informationChapter 2 Improved Multiple Attribute Decision Making Methods
Chapter 2 Improved Multiple Attribute Decision Making Methods The improved multiple attribute decision making methods for decision making in the manufacturing environment are described in this chapter.
More informationA Comparative Study on Optimization Techniques for Solving Multi-objective Geometric Programming Problems
Applied Mathematical Sciences, Vol. 9, 205, no. 22, 077-085 HIKARI Ltd, www.m-hikari.com http://dx.doi.org/0.2988/ams.205.42029 A Comparative Study on Optimization Techniques for Solving Multi-objective
More information399 P a g e. Key words: Fuzzy sets, fuzzy assignment problem, Triangular fuzzy number, Trapezoidal fuzzy number ranking function.
Method For Solving Hungarian Assignment Problems Using Triangular And Trapezoidal Fuzzy Number Kadhirvel.K, Balamurugan.K Assistant Professor in Mathematics, T.K.Govt. Arts ollege, Vriddhachalam 606 001.
More informationInfluence of fuzzy norms and other heuristics on Mixed fuzzy rule formation
International Journal of Approximate Reasoning 35 (2004) 195 202 www.elsevier.com/locate/ijar Influence of fuzzy norms and other heuristics on Mixed fuzzy rule formation Thomas R. Gabriel, Michael R. Berthold
More informationDifferent strategies to solve fuzzy linear programming problems
ecent esearch in Science and Technology 2012, 4(5): 10-14 ISSN: 2076-5061 Available Online: http://recent-science.com/ Different strategies to solve fuzzy linear programming problems S. Sagaya oseline
More informationOrdering of fuzzy quantities based on upper and lower bounds
Ordering of fuzzy quantities based on upper and lower bounds Mahdi Karimirad Department of Industrial Engineering, University of Tehran, Tehran, Iran Fariborz Jolai Department of Industrial Engineering,
More informationA Compromise Solution to Multi Objective Fuzzy Assignment Problem
Volume 113 No. 13 2017, 226 235 ISSN: 1311-8080 (printed version); ISSN: 1314-3395 (on-line version) url: http://www.ijpam.eu ijpam.eu A Compromise Solution to Multi Objective Fuzzy Assignment Problem
More informationSimultaneous Perturbation Stochastic Approximation Algorithm Combined with Neural Network and Fuzzy Simulation
.--- Simultaneous Perturbation Stochastic Approximation Algorithm Combined with Neural Networ and Fuzzy Simulation Abstract - - - - Keywords: Many optimization problems contain fuzzy information. Possibility
More informationA New pivotal operation on Triangular Fuzzy number for Solving Fully Fuzzy Linear Programming Problems
International Journal of Applied Mathematical Sciences ISSN 0973-0176 Volume 9, Number 1 (2016), pp. 41-46 Research India Publications http://www.ripublication.com A New pivotal operation on Triangular
More informationThe Travelling Salesman Problem. in Fuzzy Membership Functions 1. Abstract
Chapter 7 The Travelling Salesman Problem in Fuzzy Membership Functions 1 Abstract In this chapter, the fuzzification of travelling salesman problem in the way of trapezoidal fuzzy membership functions
More informationDecision Support System Best Employee Assessments with Technique for Order of Preference by Similarity to Ideal Solution
Decision Support System Best Employee Assessments with Technique for Order of Preference by Similarity to Ideal Solution Jasri 1, Dodi Siregar 2, Robbi Rahim 3 1 Departement of Computer Engineering, Universitas
More informationSELECTION OF AGRICULTURAL AIRCRAFT USING AHP AND TOPSIS METHODS IN FUZZY ENVIRONMENT
SELECTION OF AGRICULTURAL AIRCRAFT USING AHP AND TOPSIS METHODS IN FUZZY ENVIRONMENT Gabriel Scherer Schwening*, Álvaro Martins Abdalla** *EESC - USP, **EESC - USP Abstract Considering the difficulty and
More information(i, j)-almost Continuity and (i, j)-weakly Continuity in Fuzzy Bitopological Spaces
International Journal of Scientific and Innovative Mathematical Research (IJSIMR) Volume 4, Issue 2, February 2016, PP 89-98 ISSN 2347-307X (Print) & ISSN 2347-3142 (Online) www.arcjournals.org (i, j)-almost
More informationA PARAMETRIC SIMPLEX METHOD FOR OPTIMIZING A LINEAR FUNCTION OVER THE EFFICIENT SET OF A BICRITERIA LINEAR PROBLEM. 1.
ACTA MATHEMATICA VIETNAMICA Volume 21, Number 1, 1996, pp. 59 67 59 A PARAMETRIC SIMPLEX METHOD FOR OPTIMIZING A LINEAR FUNCTION OVER THE EFFICIENT SET OF A BICRITERIA LINEAR PROBLEM NGUYEN DINH DAN AND
More informationA new approach for solving cost minimization balanced transportation problem under uncertainty
J Transp Secur (214) 7:339 345 DOI 1.17/s12198-14-147-1 A new approach for solving cost minimization balanced transportation problem under uncertainty Sandeep Singh & Gourav Gupta Received: 21 July 214
More informationInteractive TOPSIS Algorithm for Fuzzy Large Scale Two-Level Linear Multiple Objective Programming Problems
International Journal of Engineering and Technical Research (IJETR) ISSN: 2321-0869 (O) 2454-4698 (P), Volume-3, Issue-10, October 2015 Interactive TOPSIS Algorithm for Fuzz Large Scale Two-Level Linear
More information[Rao* et al., 5(9): September, 2016] ISSN: IC Value: 3.00 Impact Factor: 4.116
IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY MULTI-OBJECTIVE OPTIMIZATION OF MRR, Ra AND Rz USING TOPSIS Ch. Maheswara Rao*, K. Jagadeeswara Rao, K. Laxmana Rao Department
More informationApproximation of a Fuzzy Function by Using Radial Basis Functions Interpolation
International Journal of Mathematical Modelling & Computations Vol. 07, No. 03, Summer 2017, 299-307 Approximation of a Fuzzy Function by Using Radial Basis Functions Interpolation R. Firouzdor a and M.
More informationAggregation of Pentagonal Fuzzy Numbers with Ordered Weighted Averaging Operator based VIKOR
Volume 119 No. 9 2018, 295-311 ISSN: 1311-8080 (printed version); ISSN: 1314-3395 (on-line version) url: http://www.ijpam.eu ijpam.eu Aggregation of Pentagonal Fuzzy Numbers with Ordered Weighted Averaging
More informationDOI /HORIZONS.B P38 UDC :519.8(497.6) COMBINED FUZZY AHP AND TOPSIS METHODFOR SOLVINGLOCATION PROBLEM 1
DOI 10.20544/HORIZONS.B.03.1.16.P38 UD 656.96:519.8(497.6) OMBINED FUZZY AHP AND TOPSIS METHODFOR SOLVINGLOATION PROBLEM 1 Marko Vasiljević 1, Željko Stević University of East Sarajevo Faculty of Transport
More informationCOMPENDIOUS LEXICOGRAPHIC METHOD FOR MULTI-OBJECTIVE OPTIMIZATION. Ivan P. Stanimirović. 1. Introduction
FACTA UNIVERSITATIS (NIŠ) Ser. Math. Inform. Vol. 27, No 1 (2012), 55 66 COMPENDIOUS LEXICOGRAPHIC METHOD FOR MULTI-OBJECTIVE OPTIMIZATION Ivan P. Stanimirović Abstract. A modification of the standard
More informationA fuzzy soft set theoretic approach to decision making problems
Journal of Computational and Applied Mathematics 203 (2007) 412 418 www.elsevier.com/locate/cam A fuzzy soft set theoretic approach to decision making problems A.R. Roy, P.K. Maji Department of Mathematics,
More informationThe Application of Fuzzy TOPSIS Approach to Personnel Selection for Padir Company, Iran
The Application of Fuzzy TOPSIS Approach to Personnel Selection for Padir Company, Iran Hassan Zarei Matin Professor, Faculty of Management, University of Tehran, Iran E-mail: matin@ut.ac.ir Mohammad Reza
More informationA compromise method for solving fuzzy multi objective fixed charge transportation problem
Lecture Notes in Management Science (2016) Vol. 8, 8 15 ISSN 2008-0050 (Print), ISSN 1927-0097 (Online) A compromise method for solving fuzzy multi objective fixed charge transportation problem Ratnesh
More informationInterval multidimensional scaling for group decision using rough set concept
Expert Systems with Applications 31 (2006) 525 530 www.elsevier.com/locate/eswa Interval multidimensional scaling for group decision using rough set concept Jih-Jeng Huang a, Chorng-Shyong Ong a, Gwo-Hshiung
More informationAn evaluation approach to engineering design in QFD processes using fuzzy goal programming models
European Journal of Operational Research 7 (006) 0 48 Production Manufacturing and Logistics An evaluation approach to engineering design in QFD processes using fuzzy goal programming models Liang-Hsuan
More informationOrdering of Generalised Trapezoidal Fuzzy Numbers Based on Area Method Using Euler Line of Centroids
Advances in Fuzzy Mathematics. ISSN 0973-533X Volume 12, Number 4 (2017), pp. 783-791 Research India Publications http://www.ripublication.com Ordering of Generalised Trapezoidal Fuzzy Numbers Based on
More informationChapter 75 Program Design of DEA Based on Windows System
Chapter 75 Program Design of DEA Based on Windows System Ma Zhanxin, Ma Shengyun and Ma Zhanying Abstract A correct and efficient software system is a basic precondition and important guarantee to realize
More informationResearch Article A New Fuzzy TOPSIS-TODIM Hybrid Method for Green Supplier Selection Using Fuzzy Time Function
Fuzzy Systems, Article ID 841405, 10 pages http://dx.doi.org/10.1155/2014/841405 Research Article A New Fuzzy TOPSIS-TODIM Hybrid Method for Green Supplier Selection Using Fuzzy Time Function Alireza Arshadi
More informationAn Exact Expected Value-Based Method to Prioritize Engineering Characteristics in Fuzzy Quality Function Deployment
Int J Fuzzy Syst (216) 18(4):63 646 DOI 117/s4815-15-118- An Exact Expected Value-Based Method to Prioritize Engineering Characteristics in Fuzzy Quality Function Deployment Jing Liu 1 Yizeng Chen 2 Jian
More informationSolving Fuzzy Travelling Salesman Problem Using Octagon Fuzzy Numbers with α-cut and Ranking Technique
IOSR Journal of Mathematics (IOSR-JM) e-issn: 2278-5728, p-issn: 239-765X. Volume 2, Issue 6 Ver. III (Nov. - Dec.26), PP 52-56 www.iosrjournals.org Solving Fuzzy Travelling Salesman Problem Using Octagon
More informationRanking Fuzzy Numbers Based on Ambiguity Degrees
ustralian Journal of Basic and pplied Sciences, 5(): 6-69, ISSN 99-878 Ranking Fuzzy Numbers Based on mbiguity Degrees Tayebeh Hajjari Department of Mathematics, Islamic zad University, Firuz Kuh Branch,
More informationRanking of fuzzy numbers, some recent and new formulas
IFSA-EUSFLAT 29 Ranking of fuzzy numbers, some recent and new formulas Saeid Abbasbandy Department of Mathematics, Science and Research Branch Islamic Azad University, Tehran, 14778, Iran Email: abbasbandy@yahoo.com
More informationApplication of Shortest Path Algorithm to GIS using Fuzzy Logic
Application of Shortest Path Algorithm to GIS using Fuzzy Logic Petrík, S. * - Madarász, L. ** - Ádám, N. * - Vokorokos, L. * * Department of Computers and Informatics, Faculty of Electrical Engineering
More informationDeveloping a heuristic algorithm for order production planning using network models under uncertainty conditions
Applied Mathematics and Computation 182 (2006) 1208 1218 www.elsevier.com/locate/amc Developing a heuristic algorithm for order production planning using network models under uncertainty conditions H.
More informationFuzzy multi objective linear programming problem with imprecise aspiration level and parameters
An International Journal of Optimization and Control: Theories & Applications Vol.5, No.2, pp.81-86 (2015) c IJOCTA ISSN:2146-0957 eissn:2146-5703 DOI:10.11121/ijocta.01.2015.00210 http://www.ijocta.com
More informationEVALUATION OF CLASSIFICATION ALGORITHMS USING MCDM AND RANK CORRELATION
International Journal of Information Technology & Decision Making Vol. 11, No. 1 (2012) 197 225 c The Author(s) DOI: 10.1142/S0219622012500095 EVALUATION OF CLASSIFICATION ALGORITHMS USING MCDM AND RANK
More informationA Study on Fuzzy AHP method and its applications in a tie-breaking procedure
Global Journal of Pure and Applied Mathematics. ISSN 0973-1768 Volume 13, Number 6 (2017), pp. 1619-1630 Research India Publications http://www.ripublication.com A Study on Fuzzy AHP method and its applications
More informationMulti objective linear programming problem (MOLPP) is one of the popular
CHAPTER 5 FUZZY MULTI OBJECTIVE LINEAR PROGRAMMING PROBLEM 5.1 INTRODUCTION Multi objective linear programming problem (MOLPP) is one of the popular methods to deal with complex and ill - structured decision
More informationA Comparative Study of Defuzzification Through a Regular Weighted Function
Australian Journal of Basic Applied Sciences, 4(12): 6580-6589, 2010 ISSN 1991-8178 A Comparative Study of Defuzzification Through a Regular Weighted Function 1 Rahim Saneifard 2 Rasoul Saneifard 1 Department
More informationComputing Performance Measures of Fuzzy Non-Preemptive Priority Queues Using Robust Ranking Technique
Applied Mathematical Sciences, Vol. 7, 2013, no. 102, 5095-5102 HIKARI Ltd, www.m-hikari.com http://dx.doi.org/10.12988/ams.2013.37378 Computing Performance Measures of Fuzzy Non-Preemptive Priority Queues
More informationUsing Ones Assignment Method and. Robust s Ranking Technique
Applied Mathematical Sciences, Vol. 7, 2013, no. 113, 5607-5619 HIKARI Ltd, www.m-hikari.com http://dx.doi.org/10.12988/ams.2013.37381 Method for Solving Fuzzy Assignment Problem Using Ones Assignment
More informationAccess from the University of Nottingham repository:
Madi, Elissa and Garibaldi, Jonathan M and Wagner, Christian (2015) A comparison between two types of Fuzzy TOPSIS method In: 2015 IEEE International Conference on Systems, Man, and Cybernetics (SMC),
More informationFuzzy multi-criteria decision making method for facility location selection
African Journal of Business Management Vol. 6(1), pp. 206-212, 11 January, 2012 Available online at http://www.academicjournals.org/ajbm DOI: 10.5897/AJBM11.1760 ISSN 1993-8233 2012 Academic Journals Full
More informationOptimization with linguistic variables
Optimization with linguistic variables Christer Carlsson christer.carlsson@abo.fi Robert Fullér rfuller@abo.fi Abstract We consider fuzzy mathematical programming problems (FMP) in which the functional
More informationUsing Goal Programming For Transportation Planning Decisions Problem In Imprecise Environment
Australian Journal of Basic and Applied Sciences, 6(2): 57-65, 2012 ISSN 1991-8178 Using Goal Programming For Transportation Planning Decisions Problem In Imprecise Environment 1 M. Ahmadpour and 2 S.
More informationFuzzy Sets and Systems. Lecture 1 (Introduction) Bu- Ali Sina University Computer Engineering Dep. Spring 2010
Fuzzy Sets and Systems Lecture 1 (Introduction) Bu- Ali Sina University Computer Engineering Dep. Spring 2010 Fuzzy sets and system Introduction and syllabus References Grading Fuzzy sets and system Syllabus
More informationA Novel Method to Solve Assignment Problem in Fuzzy Environment
A Novel Method to Solve Assignment Problem in Fuzzy Environment Jatinder Pal Singh Neha Ishesh Thakur* Department of Mathematics, Desh Bhagat University, Mandi Gobindgarh (Pb.), India * E-mail of corresponding
More informationDEFUZZIFICATION METHOD FOR RANKING FUZZY NUMBERS BASED ON CENTER OF GRAVITY
Iranian Journal of Fuzzy Systems Vol. 9, No. 6, (2012) pp. 57-67 57 DEFUZZIFICATION METHOD FOR RANKING FUZZY NUMBERS BASED ON CENTER OF GRAVITY T. ALLAHVIRANLOO AND R. SANEIFARD Abstract. Ranking fuzzy
More informationVague Congruence Relation Induced by VLI Ideals of Lattice Implication Algebras
American Journal of Mathematics and Statistics 2016, 6(3): 89-93 DOI: 10.5923/j.ajms.20160603.01 Vague Congruence Relation Induced by VLI Ideals of Lattice Implication Algebras T. Anitha 1,*, V. Amarendra
More informationα-pareto optimal solutions for fuzzy multiple objective optimization problems using MATLAB
Advances in Modelling and Analysis C Vol. 73, No., June, 18, pp. 53-59 Journal homepage:http://iieta.org/journals/ama/ama_c α-pareto optimal solutions for fuzzy multiple objective optimization problems
More informationA new approach for ranking trapezoidal vague numbers by using SAW method
Science Road Publishing Corporation Trends in Advanced Science and Engineering ISSN: 225-6557 TASE 2() 57-64, 20 Journal homepage: http://www.sciroad.com/ntase.html A new approach or ranking trapezoidal
More informationAssume we are given a tissue sample =, and a feature vector
MA 751 Part 6 Support Vector Machines 3. An example: Gene expression arrays Assume we are given a tissue sample =, and a feature vector x œ F Ð=Ñ $!ß!!! consisting of 30,000 gene expression levels as read
More informationDiscrete Optimization. Lecture Notes 2
Discrete Optimization. Lecture Notes 2 Disjunctive Constraints Defining variables and formulating linear constraints can be straightforward or more sophisticated, depending on the problem structure. The
More informationAn Appropriate Method for Real Life Fuzzy Transportation Problems
International Journal of Information Sciences and Application. ISSN 097-55 Volume 3, Number (0), pp. 7-3 International Research Publication House http://www.irphouse.com An Appropriate Method for Real
More informationOn JAM of Triangular Fuzzy Number Matrices
117 On JAM of Triangular Fuzzy Number Matrices C.Jaisankar 1 and R.Durgadevi 2 Department of Mathematics, A. V. C. College (Autonomous), Mannampandal 609305, India ABSTRACT The fuzzy set theory has been
More informationPreprint Stephan Dempe, Alina Ruziyeva The Karush-Kuhn-Tucker optimality conditions in fuzzy optimization ISSN
Fakultät für Mathematik und Informatik Preprint 2010-06 Stephan Dempe, Alina Ruziyeva The Karush-Kuhn-Tucker optimality conditions in fuzzy optimization ISSN 1433-9307 Stephan Dempe, Alina Ruziyeva The
More informationCHAPTER 4 MAINTENANCE STRATEGY SELECTION USING TOPSIS AND FUZZY TOPSIS
59 CHAPTER 4 MAINTENANCE STRATEGY SELECTION USING TOPSIS AND FUZZY TOPSIS 4.1 INTRODUCTION The development of FAHP-TOPSIS and fuzzy TOPSIS for selection of maintenance strategy is elaborated in this chapter.
More informationSupplier Selection Based on Two-Phased Fuzzy Decision Making
GADING BUINE AND MANAGEMENT JOURNAL Volume 7, Number, 55-7, 03 upplier election Based on Two-Phased Fuzzy Decision Making Fairuz hohaimay, Nazirah Ramli, 3 iti Rosiah Mohamed & Ainun Hafizah Mohd,,3, Faculty
More informationDecision Science Letters
Decision Science Letters 1 (2012) 53 58 Contents lists available at GrowingScience Decision Science Letters homepage: www.growingscience.com/dsl An application of TOPSIS for ranking internet web browsers
More informationTRIANGULAR INTUITIONISTIC FUZZY AHP AND ITS APPLICATION TO SELECT BEST PRODUCT OF NOTEBOOK COMPUTER
Inter national Journal of Pure and Applied Mathematics Volume 113 No. 10 2017, 253 261 ISSN: 1311-8080 (printed version); ISSN: 1314-3395 (on-line version) url: http://www.ijpam.eu ijpam.eu TRIANGULAR
More informationIrregular Interval Valued Fuzzy Graphs
nnals of Pure and pplied Mathematics Vol 3, No, 03, 56-66 ISSN: 79-087X (P), 79-0888(online) Published on 0 May 03 wwwresearchmathsciorg nnals of Irregular Interval Valued Fuzzy Graphs Madhumangal Pal
More informationModified Model for Finding Unique Optimal Solution in Data Envelopment Analysis
International Mathematical Forum, 3, 2008, no. 29, 1445-1450 Modified Model for Finding Unique Optimal Solution in Data Envelopment Analysis N. Shoja a, F. Hosseinzadeh Lotfi b1, G. R. Jahanshahloo c,
More informationRanking of Generalized Exponential Fuzzy Numbers using Integral Value Approach
Int. J. Advance. Soft Comput. Appl., Vol., No., July 010 ISSN 074-853; Copyright ICSRS Publication, 010.i-csrs.org Ranking of Generalized Exponential Fuzzy Numbers using Integral Value Approach Amit Kumar,
More informationA Distance Metric for Evolutionary Many-Objective Optimization Algorithms Using User-Preferences
A Distance Metric for Evolutionary Many-Objective Optimization Algorithms Using User-Preferences Upali K. Wickramasinghe and Xiaodong Li School of Computer Science and Information Technology, RMIT University,
More informationControlling the spread of dynamic self-organising maps
Neural Comput & Applic (2004) 13: 168 174 DOI 10.1007/s00521-004-0419-y ORIGINAL ARTICLE L. D. Alahakoon Controlling the spread of dynamic self-organising maps Received: 7 April 2004 / Accepted: 20 April
More informationA Triangular Fuzzy Model for Decision Making
American Journal of Computational and Applied Mathematics 04, 4(6): 9-0 DOI: 0.93/j.ajcam.040406.03 A Triangular uzzy Model for Decision Making Michael Gr. Voskoglou School of Technological Applications,
More informationA fuzzy MCDM model with objective and subjective weights for evaluating service quality in hotel industries
Zoraghi et al. Journal of Industrial Engineering International 2013, 9:38 ORIGINAL RESEARCH A fuzzy MCDM model with objective and subjective weights for evaluating service quality in hotel industries Nima
More informationA Simulation Based Comparative Study of Normalization Procedures in Multiattribute Decision Making
Proceedings of the 6th WSEAS Int. Conf. on Artificial Intelligence, Knowledge Engineering and Data Bases, Corfu Island, Greece, February 16-19, 2007 102 A Simulation Based Comparative Study of Normalization
More informationDynamic Analysis of Structures Using Neural Networks
Dynamic Analysis of Structures Using Neural Networks Alireza Lavaei Academic member, Islamic Azad University, Boroujerd Branch, Iran Alireza Lohrasbi Academic member, Islamic Azad University, Boroujerd
More information