在论述数据流管理系统模型的基础上，深入分析了国内外的各种频繁模式挖掘算法，并指出这些算法的特点及其局限性。
Based on comment of DSMS model, various frequent pattern mining algorithms are analyzed thoroughly and their characteristics and limitation are pointed out in this paper.
数据流管理系统提出了一种通用结构模型，它采用窗口机制，连续查询以及相应的优化策略迅速高效地对实时数据进行在线分析处理。
DSMS is a common model, which adopts window mechanics, continuous query and many optimizing strategy to online analyzing and disposing real-time data quickly and efficiently.
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