关键词: 信息系统, 属性重要性, 属性约简, 核属性

Abstract: Attribute reduction in information system is an important step during knowledge acquisition using Rough set. This paper focuses on the research of feature selection, deleting superfluous attributes in an information system. The new algorithm begins with the attribute significance, adopting iterative feature selection standard, making the selected feature attribute set get smaller, thus it acquires the reduction of information system. The experiment demonstrates that this method is feasible and effective.

Key words: information system, attribute significance, attribute reduction, core attribute