New method for discretization of continuous attributes in rough set theory

作者：Cong, Rong^*; Wang, Xiukun; Li, Kai; Yang, Nanhai

来源：Journal of Systems Engineering and Electronics, 2010, 21(2): 250-253.

DOI：10.3969/j.issn.1004-4132.2010.02.013

• rough set
• discretization
• reduction

A new method for discretization of continuous attributes is put forward to overcome the limitation of the traditional rough sets, which cannot deal with continuous attributes. The method is based on an improved algorithm to produce candidate cut points and an algorithm of reduction based on variable precision rough information entropy. With the guarantee of consistency of decision system, the method can reduce the number of cut points and improve efficiency of reduction. Adopting variable precision rough information entropy as measure criterion, it has a good tolerance to noise. Experiments show that the algorithm yields satisfying reduction results.

• 出版日期2010-4
• 单位大连理工大学; 中国人民解放军海军大连舰艇学院