摘要
一般来说 ,在从数据库中获得有用的知识之前 ,通过采样、收集而取得的原始数据不一定适合于直接运用于知识获取 ,通常要对原始数据进行加工处理 ,对有遗漏的信息资料就要补全。文章在对粗糙集理论研究的基础上 ,运用容差关系对含有决策的数据表进行了遗漏补缺 。
Generally speaking, before acquiring useful information from database, the original data which are got by sampling and collecting may not be applied to acquiring knowledge directly. Usually, original data need to be processed and default filled. Based on the profound research of rough set theory, the decision table is default filled by using tolerance relation, which proves efficient.
出处
《昆明理工大学学报(理工版)》
2003年第6期157-160,共4页
Journal of Kunming University of Science and Technology(Natural Science Edition)
关键词
数据补全
数据库
粗糙集
信息表
决策表
rough set
fill default
tolerance relation
tolerance relation in decision
tolerance relation out decision
decision table algorithm