REVISION OF SIGN DISTANCE METHOD FOR RANKING OF FUZZY NUMBERS
نویسندگان
1 Department of Mathematics, South Tehran Branch, Islamic Azad University, Tehran, Iran
2 Department of Mathematics, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran
3 Department of Mathematics, Science and Research Branch, Is- lamic Azad University, Tehran, Iran
doi
10.22111/ijfs.2013.1050چکیده
Recently, Abbasbandy and Asady have been proposed a modificationof the distance based approach, namely ``sign distance method''.However, in this paper, it is shown that this method has some drawbacks, i.e.,the result is not consistent with human intuition for specialcases and this method cannot always logically infer rankingorder of the images of the fuzzy numbers. In this paper, wepresent a revised method which can avoid these problems forranking fuzzy numbers. Also, we present several propertiesfor revised sign distance method while the original method does not have some ofthem.
