Improvement of an Extraction Method of Generalized Dynamic Reducts in Rough Set Theory

Abstract

In this paper, we discuss improvement of an extraction method of generalized dynamic reducts (GDRs). We have proposed and implemented a method for extracting GDRs from large-scale data. This method consists of the extraction process of GDR candidates and the check process whether each GDR candidate satisfies the condition of GDRs, however, the check process needs long compitational time. In order to solve this problem, we attempt to improve the check process.