...Li Li; Xican Li Purpose Grey set is the important foundation of the grey mathematics and grey system theory, and the possibility function is the way of expressing grey set. This paper aims to establish the method of determining the possibility function of grey set and discusses its extended...

... work to standardise all the definitions of terms for a new discipline. It is also propitious to spread and universal of grey system theory. Grey clustering evaluation Grey clustering Degree of grey incidence Variable weights Possibility function Fixed weights End-point mixed possibility...