吳貴美Wu, Kwei-MeiKwei-MeiWu2006-07-262018-06-282006-07-262018-06-282005-07-31http://ntur.lib.ntu.edu.tw//handle/246246/21016In this article, we use the signed distance to consider the ranking problem of interval- valued fuzzy sets. This ranking can be used in decision-making problem based on interval-valued fuzzy sets, or in the fuzzi¯cation or defuzzi¯cation of two sides of an equation in the fuzzy sense. We can learn that how far it is between two interval- valued fuzzy sets by the ranking of the signed distance.application/pdf139072 bytesapplication/pdfzh-TW國立臺灣大學數學系暨研究所Rankinginterval-valued fuzzy setssigned distancereporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/21016/1/932115M002020.pdf