Rough set can delete irrespective or unimportant attributes under the premises of no classification ability changing,without supplement information or prior knowledge.

 
  • 粗糙集不需要数据的附加信息或先验知识,在知识库分类能力不变的前提条件下,删除无关或不重要的属性,能对决策系统进行有效约简。
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