Survey on Rough Set Theory Based on Connection Degree

摘要

Rough set theory is a relatively new soft computing tool to deal with vagueness and uncertainty. It has received muchattention of the researchers around the world. In recent years, rough set theory based on connection degree has become a focussubject in rough set research. The basic concepts and models of rough set theory are introduced and the extension rough set modelbased on connection degree is analyzed in details. In the end, a method to determine the value of connection degree is proposed.