| 摘要: |
| 目前,国际上的关联规则研究尚未考虑时间因素.然而,时间是现实世界的固有属性,许多现实 世界数据库都存在时态语义问题.该文考察称为有效时间的时态约束问题,提出了时间区间延 展与归并技术以及新的时态关联规则发现算法,从而进一步推广了关联规则的应用. |
| 关键词: 知识发现,关联规则,时态约束. |
| DOI： |
| 分类号: |
| 基金项目:本文研究得到国家自然科学基金和安徽省教委科研基金资助. |
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| Discovery of Association Rules with Temporal Constraint in Datab ases |
|
OU-YANG Wei-min,CAI Qing-sheng
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| Abstract: |
| Time has not been taken into account in the current international researches of association rules. However, time is an inherent property in the real world. Ther e exists temporal semantics in many real world databases. The temporal constrain t problem called valid time is considered in this paper. Both the methods for ex tending and merging time intervals and the new discovery algorithm for temporal association rules are proposed. Thus, the application of association rules h as been further generalized. |
| Key words: Knowledge discovery association rules temporal constraint. |
