A novel model for dynamic multi- attributes group decision-making based on vague set and its TOPSIS solution

In view of the existing problem in four-dimensional decision-making consisting of alternative set, attribute set, time set and valuator set, a novel model for dynamic multi- attribute group decision-making based on vague set and its TOPSIS solution are put forward. Firstly, the relationship between vague set and linguistic variable set is defined. Secondly, a mathematical description of dynamic multi- attribute group decision-making problem based on vague set is presented. Thirdly, how to find the model´s solution and its steps are given in detail. Finally, the proposed approach is applied and the result shows it effective and feasible.