A New Uncertainty Measure in Ordered Information Systems
Rough set theory has been considered as a useful tool to deal with inexact, uncertain, or vague knowledge. In real-world, most of information systems are based on dominance relations, called ordered information systems. Although some uncertainty measures to evaluate the uncertainty of rough sets have been investigated in ordered information systems, the existing measures are not able to characterize well the imprecision of a rough set So, it is necessary to find a new method to measure the roughness of rough sets in ordered information systems. In this paper, we give a well-justified measure, and some important properties are investigated. By an example, it is shown that our new method does not only overcome the limitations of the existing measures but also consist with human cognition in ordered information systems.
rough set uncertainly ordered information systems roughness measure
Shuhua Teng Aiping Liu Pingping Pan Jixiang Sun Wei Yao
College of Electronic Science & Engineering.National University of Defense Technology Changsha 41007 Dept.of Mechanical and Electrical Engineering, Luoyang Institute of Science and Technology Luoyang 4 Dept of Electrical Engineering Hebei Engineering and Technical College Cangzhou 061001 China P.R.Chi
国际会议
The 2nd IEEE International Conference on Advanced Computer Control(第二届先进计算机控制国际会议 ICACC 2010)
沈阳
英文
517-521
2010-03-27（万方平台首次上网日期，不代表论文的发表时间）