Showing papers in "Fuzzy Information and Engineering in 2013"

TL;DR: Fuzzy competition graph as a generalization of competition graph is introduced here and two generalizations of fuzzy competition graphs as fuzzy k-competition graphs and p-comp competition fuzzy graphs are also defined.

TL;DR: In this paper, four new operations are envisaged, defined and taken up to study a score of new identities on hesitant fuzzy sets.

TL;DR: First it is proved the existence and uniqueness of the best proximity point by using different contractive conditions, then some examples are presented to support thebest proximity point theorems.

TL;DR: In this paper, the similarity relations of intuitionistic fuzzy matrices are studied, together with invert- ibility conditions and eigenvalues of the intuitionistic matrices, and some properties and results for IFMs investigated, including idempotent, regularity, permutation matrix and spectral radius.

TL;DR: This paper proposes a new method for ranking fuzzy numbers based on the area between circumcenter of centroids of a fuzzy number and the origin which uses an index of optimism, which reflects the decision maker’s optimistic attitude and makes use of anIndex of modality which represents the importance of mode and spreads.

TL;DR: A new and simple method to solve fuzzy real system of linear equations by solving two n × n crisp systems oflinear equations is presented.

TL;DR: A counterexample is improved, showing that the similarity measure defined in [11] contains error, and with a new similarity measure introduced, a pattern recognition problem is solved.

TL;DR: The objective of this paper is to deal with a kind of fuzzy linear programming problem involving triangular fuzzy numbers, and some interesting and fundamental results are achieved which lead to a solution of fuzzylinear programming models without converting the problems to the crisp linear programming models.

TL;DR: A new definition of vague multivalued dependency (VMVD) is introduced, called α-VMVD, on the basis of α-equality of tuples as defined in the recent work on vague functional dependency [1].

TL;DR: The modified Adomian decomposition method is applied to construct the numerical algorithms for solving dual fuzzy polynomial equations based on Newton’s method.

TL;DR: An algorithm for combining probability distribution and interval-valued fuzzy number is described and applied to environmental risk modelling with a case study to propagate the proposed method.

TL;DR: The results obtained on three case studies illustrate the applicability of the proposed method to extract accurate and interpretable fuzzy models for nonlinear system identification.

TL;DR: In this article, a possibilistic model of the coinsurance problem is proposed and a decision problem whose solution is the optimal coinsurance is formulated, and some of its properties, the calculation modality and its behavior towards the changes of risk aversion are studied.

TL;DR: This paper shows that Lemma 19 of Ghanbari and Mahdavi-Amiri’s paper is not true and corrects it using the centroid formulae suggested by Wang.

TL;DR: This paper presents an extension of rough set theory with the concept of intuitionistic fuzzy sets with several properties given and discusses the knowledge reduction of the classical Pawlak information systems and the intuitionism fuzzy information systems, respectively.

TL;DR: In this article, a rooted tree is used to describe a fuzzy project network as it enables simplification in finding earliest starting times and trapezoidal fuzzy numbers to express the operation times for all activities in project network.

TL;DR: Using fuzzy points the notions of prime fuzzy ideals and weaklyPrime fuzzy ideals of a Γ-semigroup have been introduced and some important properties and characterizations have been obtained.

TL;DR: A new decision making model is proposed by incorporating the concept of probability maximization into a possibilistic programming model for multiobjective integer programming problems where each coefficient of the objective functions is expressed by a random fuzzy variable.

TL;DR: In this paper, a topological space is constructed using certain fuzzy subsets of a non-commutative residuated lattice L, and the set of all prime fuzzy filters of L is also a Hausdorff space.

TL;DR: In this article, Liu et al. studied the risk aversion of an agent faced with a situation of uncertainty represented by a discrete fuzzy variable, the relationship between stochastic dominance and credibilistic dominance, and an index of riskiness of discrete credibiliistic gambles.

TL;DR: In this article, the concept of (∈, ∈∨ qk)-fuzzy ideals of an ordered semi-group S is introduced by the ordered fuzzy points of S, and related properties are investigated.

TL;DR: In this article, the authors study the properties of k-regularity of semirings in terms of interval-valued fuzzy k-ideals of semiirings and show that the properties can be characterized using fuzzy k.

TL;DR: By considering a partial order relation on the set of fuzzy numbers, and convexity with differentiability of fuzzy mappings, duality theorems and relationships between them in fuzzy optimization problems with fuzzy coefficients are discussed.

TL;DR: The fuzzy quasi operator norm is defined and it is shown that the set all of fuzzy quasi bounded operator from X to Y is fuzzy quasi Banach space.

TL;DR: In this article, the notion of bi-Smarandache BL-algebra, bi-weak SMC-BL algebra and bi-strong SMC algebra are introduced.

TL;DR: In this article, the authors investigated the IVF approximation spaces wih new level sets of IVF sets defined and some decomposition theorems on IVF rough approximations given.

TL;DR: In this article, the authors investigated the lattice structure of all stratified principal L-topologies on a given set X and proved that the set of all topologies has atoms and dual atoms.

TL;DR: The notion of similarity coefficient between soft sets is defined, the properties that are interesting and valuable in the theory of soft sets are studied, and the effectiveness of the similarity coefficient in practical problems is illustrated.

TL;DR: In this paper, the limitations of existing methods to solve the problems of fuzzy assignment, fuzzy travelling salesman and fuzzy generalized assignment are pointed out and a new method is proposed.

TL;DR: In this paper, limitations of existing methods for solving fuzzy assignment problems (FAPs) are pointed out and two new methods named Mehar’s methods are proposed, which can solve the problems solved byexisting methods as well as those which cannot be solved by existing methods.