From the mapping relationship between information vector matrix and relative vectors, rough approximation, attribute relative reductions and selecting optimal attribute reductions set algorithms based on binary vector matrix were proposed.

• 摘要根据向量矩阵与向量之间的映射关系，研究了基于二元向量矩阵算法的粗糙近似、属性约简以及最优属性约简集的获取。