摘要
利用左右优势度及贴近度等概念定义正负理想点,并通过α截集的方法把模糊数变成区间数,再利用期望值把它映射到数轴上,然后求出期望均值到左右理想点的距离,最后利用其距离形成一个类似贴近度的综合排序指标,用此来对模糊数排序.实例说明该方法计算简单,能够克服现存的一些排序方法的缺陷,且便于运用在实际问题中.
Under the integrated considerations about the fuzzy number expected value and the ideas point,the fuzzy numbers are mapped to the expected interval by a cut set,then the distances between the left and right expected value to the ideal positive point and negative point are calculated.At last,the synthesized index is formed for ranking fuzzy numbers.The merits of the results given here are to overcome certain shortcomings in the recent literature.The method also has very easy and simple calculations compared to other methods.Moreover,numerical examples are given to compare the proposed method with other existing ones.
出处
《广西科学》
CAS
2012年第1期21-24,27,共5页
Guangxi Sciences
基金
广西自然科学基金项目(桂科自0991029)资助
关键词
模糊数
排序
理想点
期望均值
fuzzy numbers
ranking
ideal point
expected value
