...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...

... approach on proposing framework as a part of first case-objective and hybrid technique accompanied with grey set on same framework as a part of second case-objective, respectively. Findings A South African automobile parts manufacturing company is investigated as a case study company 4.0...

... Limited 2021 Emerald Publishing Limited Licensed re-use rights only Grey degree of approximation Variable precision rough set Grey set Uncertain decision-making then A is a grey set. It can be further expressed as: A = g A ± ( x 1 ) x 1 + g...

...Tooraj Karimi; Arvin Hojati Purpose In this study, a hybrid rough and grey set-based rule model is designed for diagnosis of one type of blood cancer called multiple myeloma (MM). The grey clustering method is used to combine the same condition attributes and to improve the validity of the final...