... comparability, the attribute values of alternatives in every period are standardized according to the following formulae. For benefit attributes: Shuli Yan can be contacted at: yshuli@126.com © Emerald Group Publishing Limited 2016 Decision making Grey numbers Operations Grey models...

... on grey target and prospect theory. Design/methodology/approach – First, the sequencing and distance between two grey numbers are introduced. Then, a linear operator with the features of the “rewarding good and punishing bad” is presented based on the grey target given by decision maker...

...Sifeng Liu; Zhigeng Fang; Yingjie Yang; Jeffrey Forrest Purpose The purpose of this paper is to advance new rules about operations of grey numbers. Design/methodology/approach The paper first puts forward the definitions of basic element of grey number and general grey number. The operation...