Abstract

A double hierarchy hesitant fuzzy linguistic term set (DHHFLT) is deemed as an effective and powerful linguistic expression which models complex linguistic decision information more accurately by using two different hierarchy linguistic term sets. The purpose of this paper is to propose a multi-attribute decision making method to tackle complex decision issues in which attribute values are represented as double hierarchy hesitant fuzzy linguistic numbers, and there are some extreme or unreasonable data in the attribute values. To do this, firstly, four double hierarchy hesitant fuzzy linguistic generalized power aggregation operators are introduced, including the double hierarchy hesitant fuzzy linguistic generalized power average (DHHFLGPA) operator, the double hierarchy hesitant fuzzy linguistic generalized power geometric (DHHFLGPG) operator, and their weighted forms. Thereafter, several favorable properties, as well as representative cases of the proposed operators, are investigated in detail. Moreover, by virtue of the proposed operators, a novel approach is developed for coping with multi-attribute decision making cases in the double hierarchy hesitant fuzzy linguistic context. Finally, an illustrated example is given to demonstrate the practical application of the presented approach, an availability verification is given to show its validity, and a comparative analysis is also conducted to highlight the advantages of the proposed approach.

Highlights

  • Multiple attribute decision making (MADM) occupies a significant position in modern decision science

  • Zadeh [10] first proposed the concept of fuzzy linguistic variable, and since various linguistic representation forms arose for the past few years, such as the linguistic models on account of type-2 fuzzy sets [11], 2-tuple linguistic mode [12], hesitant fuzzy linguistic term set (HFLTS) [13], probability linguistic term set [14], etc

  • 0 ≤ αr ≤ 1; r = 1, 2, . . . , #L} be a DHHFL elements (DHHFLEs) and a hesitant fuzzy element (HFE), respectively, where #L is the amount of linguistic terms (LTs) in hSθ

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Summary

Introduction

Multiple attribute decision making (MADM) occupies a significant position in modern decision science. Despite the fact that DHHFLTS is pretty useful in handling situations where DMs hesitate between several complex LTs when presenting their views in the progress of decision-making, the extantDespite approaches withthat respect to the DHHFLTS cannotintake the support degree between two the fact. LTsfails when views the progress the extensions of the GPA operator cannot deal with the assessment values expressed in extant approaches with respect to the DHHFLTS cannot take the support degree between any two form. Motivatedand by fails the GPA operator, the focus of this paper to the stretch inputs into consideration to handle the presence of extreme values.is At samethe time, the operator to ofthe circumstance the DHHFLGPA operator and DHHFL extensions the DHHFLT.

Double Hierarchy Hesitant Fuzzy Linguistic Term Set
DHHFLGPA Operator and Its Weight Form
DHHFLGPG Operator and Its Weight Form
The MADM Method Based on the Proposed Operator
Numerical Example
Decision Steps
Sensitivity Analysis
Comparative Analysis
Availability Verification
Conclusions

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