Dynamic Three-Way Decision Model Based On PS-Rough Set And Its Application

In reality,a data set changes as time goes on,including the increase and decrease of data and data attributes.PS-rough set is a knowledge decision method which fully considers the dynamic characteristics of sets.On the basis of the theories and properties of PS-rough sets and three-way decision,a general dynamic three-way decision model based on PS-rough sets is proposed in this paper,and then it is applied to partner selection in virtual logistics.Firstly,combining PS-rough sets theory with three-way decision method,a model of dynamic three-way decision model based on PS-rough sets was built.Three-way decision rules on PS-rough sets are proposed,and the calculation methods and properties of confidence degree and error rate of the three-way rules are obtained,and finally the properties of dynamic decisions are discussed.Secondly,according to the properties of dynamic decision and the algorithm ideas of one-direction moved in/out and two-direction moved in/out of the objects,the dynamic three-way decision algorithm under different cases is designed,and the correctness and feasibility of the algorithm are verified by experiments.Thirdly,the theory of three-way decision is applied to partner selection of virtual logistics.The undetermined decision is added to the two-way,i.e.selection and elimination.Three-way partner selection algorithms are designed,and the feasibility of it is verified by an example.The feasibility of the method is verified by an example,which is more in line with the reality of partner selection.Finally,the strategy of dynamic selection of virtual logistics transport partners and the related properties of dynamic selection of partners are studied,and the methods of three-way selection under different circumstances are discussed,which reduces the calculation amount in the selection process.The rationality of the dynamic three-way decision model based on PS-rough set is verified.Figure 22;Table 15;Reference 62...