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属性约简是粗糙集理论研究的核心内容之一.在序信息系统中引入信息量和属性重要性,给出它们与属性约简之间的关系.针对序信息系统提出了一种基于信息量和属性重要性的属性约简算法,讨论了算法的时间复杂度.实例证明了该算法的有效性.
Attribute reduction is one of the core contents of rough set theory research.It introduces the importance of information quantity and attribute in the sequential information system and gives the relation between them and attribute reduction.Aiming at the sequential information system, And attributes reduction algorithm of attribute importance are discussed, and the time complexity of the algorithm is discussed. The example proves the effectiveness of the algorithm.