select operators meaning in English

选择操作器

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。