FUZZY PARAMETERIZED SINGLE VALUED NEUTROSOPHIC SOFT EXPERT SET THEORY AND ITS APPLICATION

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FUZZY PARAMETERIZED SINGLE VALUED NEUTROSOPHIC SOFT EXPERT SET THEORY AND ITS APPLICATION IN DECISION MAKING Abstract. In this paper, we propose the theory of fuzzy parameterized single valued neutrosophic soft expert set by giving an importance degree for each element in the set of parameters and define some related concepts pertaining to this notion as well as the basic operations of complement, subset, union, intersection, AND and OR along with illustrative examples. The basic properties and relevant laws pertaining to this concept such as the De Morgan’s laws are proved. A comparison between our proposed method and other methods is made to illustrate the advantages of our proposed method and its ability to handle problems involving imprecise, indeterminacy and inconsistent data, which makes it more accurate and realistic than other methods. Lastly, this concept is applied to a decision making problem and its effectiveness is demonstrated using an illustrative example. Keywords. fuzzy parameterized soft expert set, single valued neutrosophic soft expert set, single valued neutrosophic set, soft expert set.

1. Introduction Fuzzy set was introduced by Zadeh [1] as a mathematical tool to solve problems and vagueness in everyday life. Since then the fuzzy sets and fuzzy logic have been applied in many real life problems in uncertain, ambiguous environment [2-5]. Later on several researches present a number of results using different direction of fuzzy set such as interval fuzzy set [6], intuitionistic fuzzy set [7] and vague set [8]. However, all these theories have their inherent difficulties and weaknesses. Thus neutrosophic set[9] is defined, as a new mathematical tool for dealing with problems involving incomplete, indeterminacy and inconsistent knowledge. In neutrosophic set, the indeterminacy is quantified explicitly and truth-membership, indeterminacy-membership and falsity-membership are completely independent. The works on neutrosophic set and their hybrid structure in theories and applications have been progressing rapidly [10-12]. From scientific or engineering point of view, neutrosophic set’s operators need to be specified. Otherwise, it will be difficult to apply in the real applications. Therefore, Wang et al.[13] defined a single valued neutrosophic set (SVNS in short) and then provided the set theoretic operations and various properties of SVNS. Molodtsov [14] initiated the concept of soft set theory as a mathematical tool for dealing with uncertainties. Further, soft set has been developed


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