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浙江大学学报(理学版)  2022, Vol. 49 Issue (4): 391-397    DOI: 10.3785/j.issn.1008-9497.2022.04.001
数学与计算机科学     
基于曲边梯形面积刻画毕达哥拉斯模糊数的排序方法
陶玉杰1,索春凤2()
1.通化师范学院 数学学院, 吉林 通化 134002
2.北华大学 数学与统计学院, 吉林 吉林 132000
Ranking method of Pythagorean fuzzy numbers characterized by curved trapezoidal area
Yujie TAO1,Chunfeng SUO2()
1.School of Mathematics,Tonghua Normal University, Tonghua 134002 Jilin Province China
1.School of Mathematics and Statistics,Beihua University,, Jilin 134002 Jilin Province China
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摘要:

毕达哥拉斯模糊集(Pythagorean fuzzy set,PFS)是传统直觉模糊集(intuitionistic fuzzy set,IFS)的扩展,能在更广泛区域处理多属性信息决策问题。首先,针对某文献毕达哥拉斯模糊数(Pythagorean fuzzy number,PFN)排序方法存在的错误,分析了其产生原因。其次,在毕达哥拉斯模糊环境下,基于可靠信息量所对应的曲边梯形面积(curved trapezoidal area,CTA)提出了新的得分函数公式,进而给出了PFN的排序准则,并讨论了该得分函数的基本性质。最后, 用实例说明给出的排序方法克服了其他方法的某些缺陷,具有一定优势。

关键词: 毕达哥拉斯模糊数(PFN)可靠信息量曲边梯形面积(CTA)得分函数排序方法    
Abstract:

Pythagorean fuzzy set (PFS) is an extension of traditional intuitionistic fuzzy set (IFS). It can deal with decision-making problems with multi-attribute information in a wider area. In this paper, we first point out errors in the ranking criterion of Pythagorean fuzzy number (PFN) proposed in a paper, and analyze the reasons that cause these errors through the derivation of reliable information (accuracy function). Then, we propose a new score function through the curved trapezoidal area (CTA) corresponding to the reliable information, which provides a ranking criterion of PFN.The basic properties of the score function are discussed. Finally, we show an example indicating the effectiveness and advantage of the new ranking method.

Key words: Pythagorean fuzzy number (PFN)    amount of reliable information    curved trapezoidal area (CTA)    score function    ranking method
收稿日期: 2022-02-21 出版日期: 2022-07-13
CLC:  O 159  
基金资助: 国家自然科学基金资助项目(61374009);吉林省教育厅科学技术研究项目(JJKH20210540KJ)
通讯作者: 索春凤     E-mail: 1242362420@qq.com
作者简介: 陶玉杰(1975—),ORCID:https://orcid.org/0000-0001-9952-1727,女,硕士,副教授,主要从事模糊积分理论和模糊决策研究.
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引用本文:

陶玉杰,索春凤. 基于曲边梯形面积刻画毕达哥拉斯模糊数的排序方法[J]. 浙江大学学报(理学版), 2022, 49(4): 391-397.

Yujie TAO,Chunfeng SUO. Ranking method of Pythagorean fuzzy numbers characterized by curved trapezoidal area. Journal of Zhejiang University (Science Edition), 2022, 49(4): 391-397.

链接本文:

https://www.zjujournals.com/sci/CN/10.3785/j.issn.1008-9497.2022.04.001        https://www.zjujournals.com/sci/CN/Y2022/V49/I4/391

表1  4种得分函数公式及其排序准则对比

给定PFN

α?iβ?i

文献[10-12]方法本文方法

能否比较

α?iβ?i

存在的缺陷

能否比较

α?iβ?i

SCTAαSCTAβ结果
1α?1=(0.05,0.62)β?1=(0.08,0.64)文献[10-12]均能比较文献[10-12]与IFNs的结果矛盾0.011 70.018 1β1?α1
2α?2=(0.5,0.5)β?2=(0.6,0.6)文献[11-12]不能比较,文献[10]能比较文献[11]得分函数值均为0.5,文献[12]得分函数值均为0.0,不能比较只能视为等价0.152 20.157 6β?2?α2
3α?3=(0.4,0.2)β?3=(0.3,0.1)文献[10-12]均能比较文献[11]与IFNs的结果矛盾0.171 70.139 7α?3?β?3
4α4=(0.4,0.1)β?4=(0.5,0.4)文献[10-12]均能比较文献[10]与IFNs的结果矛盾0.175 00.190 7β4?α?4
表2  本文方法与文献[10-12]方法的比较
图1  文献[9]推导信息可靠性的几何示意
图2  PFN α的可靠信息区域和犹豫信息区域示意
方法α?1=(0.7,0.5)β?1=(0.5,0.1)α?2=(0.4,0.4)β?2=(0.6,0.6)α?3=(0.02,0.8)β?3=(0.1,0.84)
得分值排序结果得分值排序结果得分值排序结果
文献[10Spxd(α?1)?=?1.000?9Spxd(β?1)?=?0.730?6α?1?β1Spxd(α?2)?=?0.595?2Spxd(β?2)?=?0.781?3β?2?α2Spxd(α?3)?=?0.387?9Spxd(β?3)?=?0.388?3β?3?α3
文献[11V?(α?1)??=??0.590?4V??(β?1)??=?0.690?9β?1?α1V?(α?2)??=??0.500?0V??(β?2)??=?0.500?0α2β?2V?(α?3)??=??0.112?6V??(β?3)??=?0.140?8β?3?α3
文献[12Speng(α?1)?=?0.255?5Speng(β?1)?=?0.284?2β?1?α1Speng(α?2)?=?0.000?0Speng(β?2)?=?0.000?0α2β?2Speng(α?3)?=?-0.695?2Speng(β?3)?=?-0.743?2α3?β?3
本 文SCTA(α?1)??=?0.228?3SCTA?(β?1)??=?0.246?2β?1?α1SCTA?(α?2)??=??0.136?3SCTA?(β?2)??=?0.157?6β?2?α2SCTA(α?3)??=??0.002?9SCTA(β?3)??=?0.012?3β?3?α3
表3  本文方法与文献[10-12]方法排序对比
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