Affiliation:
1. Midnapore College, Mathematics, Midnapore College (Autonomous), Midnapore, West Bengal, India
Abstract
Aims:
This article deals with a new decision-making process under a neutrosophic fuzzy
environment. First of all, we develop various types of neutrosophic set by means of neutrosophic
cones. In fact, this set has been developed from the general equation of second degree in the field
of classical geometry. Considering the neutrosophic components “true membership”, the “falsity
membership” and the “indeterminacy” as the three variables of three-dimensional rectangular axes
we develop various types of cones like structures of the traditional neutrosophic set and hence a
new defuzzification method.
Background:
Fuzzy set has some limitations in its domain [0,1] to describe real-life decisionmaking
problems. The problem of difficulties lies in the variation of lower and upper bound and
also the single valued logic (membership function only) systems. In reality, three valued logics
(membership function, non-membership function and indeterminacy) have been established in the
name of Neutrosophic logic/sets, and two valued logics (membership and non-membership functions)
have developed in the name of Intuitionistic fuzzy logic/sets. In three valued logic system,
the concepts of negation are now a growing subject of any group decision making problems. However,
to draw a clear estimation of a neutrosophic decision has not yet been studied by modern researchers.
Objective:
Various kinds of new establishments of the Neutrosophic set have been studied from the
algebraic point of view, along with some polynomial structures. We have seen that; no finite geometric
structures have been developed yet to qualify the real-world problems.
Method:
We consider the three components of a neutrosophic set as the variables of threedimensional
geometry. Since, the decisions are compact and constructive, we may consider the
convex neutrosophic cone for analyzing single/ multiple group decision making problems.
Result:
Various definitions are made over the cone- fundamentals using non-standard neutrosophic
set in the domain [−1,1] × [−1,1] × [−1,1]. Then, we studied the constructions of several expressions/
functions of neutrosophic cones, such as reciprocal cone, and enveloping cone via a novel
thinking process. Then using some examples, we have developed a new ranking method along
with their geometric structures exclusively.
Conclusion:
In this changing world, the nature of decision-making behaviors is also changing rapidly.
So, the need of establishing new concepts is an emerging area of research. However, more attention
is required in discussing such vital issues in near future. The proposed approach may be applied
to the decision-making problems of global issues also.
Publisher
Bentham Science Publishers Ltd.
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