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In view of the practical problems in multi-attribute decision-making, a method based on three-parameter vague sets is proposed. Firstly, three-parameter vague set is introduced to make up for the shortage of the original vague set in expressing fuzzy information, and the method for finding core is proposed. Secondly, the method that indicator value described by linguistic variables is transformed...
We know that ranking fuzzy numbers plays an important role in decision-making and some other fuzzy application areas. In this paper, a new definition on mean of fuzzy number---quasi-mean is given. Based on the quasi-means and fuzzy degree we propose a new method for ranking fuzzy numbers. This method has the characteristics of generality, less calculation, high efficiency and it is especially tailed...
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