...Shi Quan Jiang; SiFeng Liu; ZhongXia Liu 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...

...Lili Qian; Sifeng Liu; Zhigeng Fang Purpose The purpose of this paper is to advance a new grey risky multi-attribute decision-making (RMADM) method from the perspective of regret aversion, which is based on the general grey numbers (GGNs) taking the form of kernel and degree of greyness. Design...

...Shi-quan Jiang; Si-feng Liu; Zhi-geng Fang; Zhong-xia Liu Purpose The purpose of this paper is to study distance measuring and sorting method of general grey number. Design/methodology/approach First, the concept of generalised grey number based on grey system theory is given in this paper...

... and 1. Kernel Grey number Interval grey number General grey number Degree of greyness Simplified form Synthesis axiom Operation rules Such a number instead of its range whose exact value is unknown is referred to as a grey number. Grey number is the basic “unit” or “cell” of grey...