effectless meaning in Chinese

无效的

This paper shows three aspects as follow : 1 . an algorithm of attribute reduction based on discernibility matrix - - - - ardm is presented . through analyzing to the algorithm of attribute reduction based on discernibility matrix , the facts that affect time efficiency are found , and the absorptivity in the proposition calculation is used to the process of constructing the discernibility matrix , then the effectless repeated elements are deleted , accordingly the efficiency of attribute reduction is improved
本文的主要研究成果有以下三个方面： 1 .提出了一种基于区分矩阵的属性约简算法ardm通过对基于区分矩阵的属性约简算法进行分析，找出影响时间效率的因素并将命题演算中的吸收率用于构造区分矩阵的过程中，从而去掉了在区分函数中不起作用的“重复”元素，提高了属性约简的效率。