在数据库中发现具有时态约束的关联规则

Discovery of Association Rules with Temporal Constraint in Databases

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．

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. There exists temporal semantics in many real world databases. The temporal constraint problem called valid time is considered in this paper. Both the methods for extending and merging time intervals and the new discovery algorithm for temporal association rules are proposed. Thus, the application of association rules has been further generalized.