计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (34): 125-126.

• 数据库、信号与信息处理 • 上一篇    下一篇

不完备决策表的扩展差别矩阵规则获取方法

王 帅,徐章艳,王 炜,舒文豪   

  1. 广西师范大学 计算机科学与信息工程学院,广西 桂林 541004
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-12-01 发布日期:2011-12-01

Rule acquisition method based on extended discernibility matrix in incomplete decision table

WANG Shuai,XU Zhangyan,WAGN Wei,SHU Wenhao   

  1. School of Computer Science and Information Engineering,Guangxi Normal University,Guilin,Guangxi 541004,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-12-01 Published:2011-12-01

摘要: 针对不完备决策表,通过引入扩展差别矩阵,利用基数排序对广义决策值进行划分,只比较广义决策值不同的对象,并且记录对应的条件属性值,克服了计算过程中反复检查属性值对与广义决策值是否冲突的缺点,从而优化了算法。实例分析结果说明了该方法的正确性和优越性。

关键词: 不完备决策表, 扩展差别矩阵, 广义决策, 规则获取

Abstract: Aiming at incomplete decision table,the extended discernibility matrix is introduced.The generalized decision value is partitioned by making use of radix sorting,the results are only to compare the objects with different decision values in the calculating process,and record condition attribute value pairs directly,so that the shortcoming of checking the conflicts between attribute value and generalized decision value repeat is overcame.Therefore,the algorithm is optimized.Finally,an example is used to illustrate the advantage and convenience of the new algorithm.

Key words: incomplete decision table, discernibility matrix, generalized decision-making, rules obtaining