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-  2017 

一种面向不确定数据流的模体发现算法
New Motif Discovery Algorithm for Uncertain Data Stream

DOI: 10.3969/j.issn.1001-0548.2017.01.013

Keywords: MEME算法,模体发现,SAX,不确定数据流,不确定滑动窗口

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Abstract:

借鉴生物信息学中序列模式发现思想,提出了基于MEME(multiple expectation-maximization for motif elicitation)的不确定数据流模体发现算法。该算法根据不确定数据流的特点,设计了不确定滑动窗口的简化计算方法,改进了SAX(symbolic aggregate approximation)的符号化策略,用防空反导情报传感器网络中的一组不确定数据流验证了其可行性,通过植入不同数目模体的方法测试了其准确性,并在元组存在概率为1的条件下与已有算法进行比较,验证其有效性。

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