摘要
根据粗糙集理论可以从一个信息表中获取决策表。如果决策表条件属性的值域是连续的,这样的决策表通常是不完备的。针对这一问题,给出了连续量决策表的完备性定义、完备性度量系数和空间描述法,并通过例子进行了说明。决策表的不完备会导致决策失败,因此完备化是必不可少的。随着决策表维数增加,完备化的难度也随之增加,这是粗糙集理论应用于连续量系统的瓶颈问题。
A decision table can be obtained from an information table in terms of rough set theory.If the continuity of value domains of condition attributes of a decision table,in general,it is incompleteness.Aiming at this problem,the completeness definition,measurement coefficient and a method of space description about the decision table with continuous attributes are given,and explained through examples.The necessity and the difficulty about completizing the decision table are pointed out,and the completization of decision table is the bottleneck of applying RST to extract knowledge in the systems with continuous attributes.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2005年第z1期904-907,共4页
Chinese Journal of Scientific Instrument
关键词
粗糙集理论
连续量
决策表
完备化
Rough set theory Continuous quantities Decision table Completization
