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    题名: Incremental mining of temporal patterns in interval-based database
    作者: Hui, Lin;Chen, Yi-Cheng;Weng, Julia Tzu-Ya;Lee, Suh-Yin
    关键词: Incremental mining;Dynamic representation;Sequential pattern;Temporal pattern
    日期: 2015-02-27
    上传时间: 2016-01-06 10:54:03 (UTC+8)
    出版者: Springer
    摘要: In several real-life applications, sequence databases, in general, are updated incrementally with time. Some discovered sequential patterns may be invalidated and some new ones may be introduced by the evolution of the database. When a small set of sequences grow, or when some new sequences are added into the database, re-mining sequential patterns from scratch each time is usually inefficient and thus not feasible. Although there have been several recent studies on the maintenance of sequential patterns in an incremental manner, these works only consider the patterns extracted from time point-based data. Few research efforts have been elaborated on maintaining time interval-based sequential patterns, also called temporal patterns, where each datum persists for a period of time. In this paper, an efficient algorithm, Inc_TPMiner (Incremental Temporal Pattern Miner) is developed to incrementally discover temporal patterns from interval-based data. Moreover, the algorithm employs some optimization techniques to reduce the search space effectively. The experimental results on both synthetic and real datasets indicate that Inc_TPMiner significantly outperforms re-mining with static algorithms in execution time and possesses graceful scalability. Furthermore, we also apply Inc_TPMiner on a real dataset to show the practicability of incremental mining of temporal patterns.
    關聯: Knowledge and Information Systems 46(2), pp.423-448
    DOI: 10.1007/s10115-015-0828-5
    显示于类别:[資訊創新與科技學系] 期刊論文
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