The Interval-Valued Triangular Fuzzy Soft Set and Its Method of Dynamic Decision Making

A concept of interval-valued triangular fuzzy soft set is presented,and some operations of and, or, intersection,union and complement,and so forth are defined. then some relative properties are discussed and several conclusions are drawn. a dynamic decision making model is built based on the definition of interval-valued triangular fuzzy soft set,in which period weight is determined by the exponential decay method. the arithmetic weighted average operator of interval-valued triangular fuzzy soft set is given by the aggregating thought,thereby aggregating interval-valued triangular fuzzy soft sets of different time-series into a collective interval-valued triangular fuzzy soft set. the formulas of selection and decision values of different objects are given; therefore the optimal decision making is achieved according to the decision values. finally,the steps of this method are concluded,and one example is given to explain the application of the method. © 2014 xiaoguo chen et al.