A Study for the Feature Core of Dynamic Reduct

TL;DR

This paper introduces the concept of dynamic core in decision system reducts, formalizes its properties, and demonstrates that it shares key characteristics with the feature core.

Contribution

It proposes the dynamic core notion for reduct problems and explores its formal properties, extending the understanding of feature cores in decision systems.

Findings

Dynamic core shares essential features with feature core.

Formal definitions and properties of dynamic core are established.

The study enhances the theoretical framework of decision system reducts.

Abstract

To the reduct problems of decision system, the paper proposes the notion of dynamic core according to the dynamic reduct model. It describes various formal definitions of dynamic core, and discusses some properties about dynamic core. All of these show that dynamic core possesses the essential characters of the feature core.