General grey number decision-making model and its application based on intuitionistic grey number set
GREY SYSTEMS-THEORY AND APPLICATION(2021)
Abstract
Purpose - The purpose of this paper is to study the grey decision model and distance measuring method of general grey number. Design/methodology/approach - First, intuitionistic grey number (IGN) set and an IGN are defined by grey number probability function. Second, each interval grey number in general grey number is represented by an IGN and converts the general grey number into an IGN set. Final, the operation of two general grey numbers is defined as the operation between IGN sets, and the distance measure of the general grey number is given. Findings - Up to now, the method of measuring the distance and the grey decision model of general grey number is established. Thus, the difficult problem for set up decision mode of general grey number has been solved to a certain degree. Research limitations/implications - The method exposed in this paper can be used to integrate information form a different source. The method that a general grey number converted to a set of IGNs could be extended to the case of grey incidence analysis models, grey prediction models and grey clustering evaluation models, which includes general grey numbers, etc. Originality/value - The concepts of IGN and IGN set are proposed for the first time in this paper; The operation of two general grey numbers can be defined as the operation between IGN sets. On this basis, the algorithm of IGN, the integration operator of IGN and the distance measure between IGN sets are given.
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Key words
General grey number,Intuitionistic grey number,Intuitionistic grey number set,Probability function
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