select vt. 选;选择;挑选;选拔。 Her father let her select her own birthday present. 她的父亲让她自己挑选生日礼品。 vi. 挑选,选择。 adj. 1.挑选出来的;精选的;极好的。 2.〔口语〕爱挑三拣四的;挑剔的。 3.苛择的;入会条件苛刻的。 a select crew 一批精选的水手。 be select in choosing one's friends 择友谨慎。 select wines 精选的酒。 n. 1.〔口语〕精选品;顶好的货色。 2. 〔常 pl.〕被挑选者。
Cannot choose this operator , since the selected operator is a parent of the current operator 不能选择操作,选定的操作是当前操作的母轨
One is based on the discriminated matrics , the other is based on ga . we use many new ways to make the algorithms more effective , such as reducing dimension and sparsiting elements of the discriminated matrics , effectively selecting elements of the positive examples set and the counter examples set for the jointing - spreading matrics , using a new selecting operator , and so on 其次,实现了基于粗集理论的属性约简方法? ?基于可分辨矩阵的属性约简法和基于遗传算法的属性约简法,并通过降维、稀疏化、正例集和反例集的有效选取、新的选择算子等方法对原算法进行了改进。