摘要
通过实例证明了现有的两种属性重要度定义的不完备性,提出了一种加权求和的属性重要度定义,在此基础上构造了属性约简的启发式算法。通过几个算例的测试,验证了该算法的有效性。
In the paper, firstly, the incompleteness of two existing definitions of the attribute significance is proved by an example. Secondly, a definition of the attribute significance based on the weighed sum is proposed and a heuristic algorithm is constructed. Finally, several practical databases are tested, showing the validity of the algorithm.
出处
《微计算机信息》
北大核心
2006年第03X期246-248,共3页
Control & Automation
基金
国家自然科学基金(60175019)
关键词
属性约简
属性重要度
启发式算法
attribute reduction
attribute significance
heuristic algorithms
