The concepts of global decision table and local decision table are introduced.And an algorithm over vertically partitioned multi-decision table for computing global attribute core is presented.

• 摘要针对分布式环境下粗糙集理论研究的重要性，引入全局决策表和局部决策表的概念，并提出一种基于垂直分布的多决策表全局属性核求解算法。