基于SQL的属性核与约简高效计算方法

High Efficiency Approaches for Computing Attributes Core and Reductions Based on SQL

结合关系数据库中高性能的SQL语言操作,提出了关系数据库中属性核、属性约简与值核的计算方法。仿真实验结果表明,该方法与经典粗糙集相关方法相比,有更高的执行效率。

Calculating approaches for attributes core, attributes reductions and values core were developed in relation databases by combing rough set theory and SQL. Experimental results illustrate these methods have the better performance in run-time efficiency comparing with the related approaches of the classical rough set theory in processing decision tables.