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Many approaches have been proposed to quest appropriate methods in ranking fuzzy numbers. Due to the flexibility of fuzzy numbers, most of these methods are not able to calculate all kinds of ranking fuzzy numbers and some of them give inconsistent and counter intuitive results. As a result, the final ranking sometimes fails to discriminate fuzzy numbers effectively. This paper aims to propose a new...
Selection of contractors is the process of hiring the most appropriate contractor to deliver the project within specific time, with good quality, and at low cost. Selection based on a set of qualification criteria has become essential to the success of construction projects and it outperforms the traditional lowest cost selection method. A common problem however is the compatibility of the selected...
Multiattribute group decision making (MAGDM) problems often involve both quantitative and qualitative attributes, where assessment values are expressed as imprecise data. This paper entertains interval-valued intuitionistic fuzzy sets (IVIFSs) to characterize fuzziness and uncertainty contained in imprecise decision data and processes such as subjective factors of linguistic terms and satisfaction...
In view of the practical problems in hybrid multi-attribute decision-making, a method based on vague sets is proposed. Firstly, the qualitative and quantitative indicator values described by linguistic variables and exact numbers respectively are transformed into vague values. Secondly, a model of hybrid multi-objective decision making based on vague sets is put forward. Thirdly a novel comprehensive...
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