1.
INTRODUCTION
An new notion of intuitionistic fuzzy sets (IFSs) had
been presented by Atanassov in 1983[1]. IFSs is
represented by both the membership functions and
non-membership functions, even the hesitation function,
and therefore it extends the concept scope of fuzzy set [2-3].
The concept of IFSs is significant and practical in dealing
with real life issues with inaccuracy or imprecision and it
has been applied to many different fields, including
multiple attribute decision making (MADM) [5–9],
dynamic decision making (DDM) [10–11], group decision
making (GDM) [12], supplier selection [13-14] and
artificial intelligence [15].
Although there are a lot of literatures to study
intuitionistic fuzzy sets, the geometric scheme of IFSs had
been researched in the administrative levels of
two-dimension merely. This paper will discuss the whole
three-dimension geometric schemes for IFSs, and apply the
graphical solution to rank approach of IFSs.
The rest of this paper is structured as follows: next
section we firstly review the definition to IFSs and
traditional rank approach. Section 3 designs the geometric
scheme for IFSs. The rank approach to IFSs based on
graphical solution will be introduced in Section 4. Example
analysis has been spread to proved the feasibility of the
improved algorithm in Section 5.
This work is supported by National Natural Science Foundation of China
Youth Fund Project under Grant NSFC-61503127, by the Natural Science
Foundation of Heilongjiang Province of China (Grant Nos. F2015014) and
Natural Science Foundation of Heilongjiang Province of China under Grant
Nos. F2015045
2.
PRELIMINARIES
2.1 Definition to IFSs
Definition 1. [1] Let X be a universe of fixed discourse. The
intuitionistic fuzzy set A in X is defined as follow.
AA
(1)
Where
A
μ
:
and
A
:
are
degrees of membership and non-membership of an element
, respectively, For all of
, with the condition
AA
xvx
μ
.
For each A in X,
AAA
πμ
=− − ,
, is
called the degrees of hesitation, and intuitionistic index of x
to A also should be named. It indicates the degree of
indeterminacy or hesitation of x to A, and for each
A
xX x
π
.
Intuitionistic fuzzy description is the closed
representation to human decision making. For example, in
voting system, the notes of favor are presented as
A
μ
,
the notes of opposition are expressed in
A
, the notes of
hesitation are delivered by
A
π
.
Definition 2. [16-17] Assume IFNs
111
AA
,
222
AA
, the following
relationships are defined as:
AA
μ
=< > ∈
(1)
12 1 2
12
{,min{ (), ()},
AA
AA
AA x x x
μμ
∩=<
>∈
(2)
12 1 2
12
AA
AA
AA x x x
μμ
∪=<
>∈
(3)
Rank to Intuitionistic Fuzzy Sets Based on Graphical Geometric Solution
Hui Li
1
, Ming Zhao
1
, Yun Li
1
, Gang Hao
2*
1. School of Computer and Information Engineering, Harbin University of Commerce, Harbin 150028, China
E-mail: hrbcu_lh@163.com, bendian2006@163.com, liyun@hrbcu.edu.cn
2. School of Electronic Engineering Heilongjiang University Heilongjiang, Harbin, 150080, China
E-mail: haogang@hlju.edu.cn
Abstract: To represent the Intuitionistic Fuzzy Sets (IFSs) simply and clearly, the whole three dimension geometric
schemes for IFSs have been researched in cartesian coordinates, cylinder coordinates and spherical coordinates
respectively, and the plane nature of IFS has been obtained. After analyzing the graphical solution of LP problems, this
paper illustrates an improved rank approach to IFSs based on graphical solution. Comparing with other approaches, the
result obtained by geometric scheme has simple and clear description.
Key Words: Intuitionistic Fuzzy Sets, Geometric Scheme, Graphical Solution
5517
978-1-5090-4657-7/17/$31.00
c
2017 IEEE