A study on improvement of recalculation of relative reducts after appending some objects to the decision table

Abstract

Abstract: In this paper, we discuss an improved method to quickly calculate relative reducts after appending some objects to the decision table. In general, when a decision table that has already created relative reducts is updated, it is necessary to calculate all relative reducts again. However, recalculation of all relative reducts requires a lot of time and storage area. Therefore, we propose a new method to calculate relative reducts quickly and easily after appending some objects to the decision table.