A New Fast Vertical Method for Mining Frequent Patterns
A New Fast Vertical Method for Mining Frequent Patterns
复制标题
挖掘频繁模式的一种新的快速垂直方法
DOI:
10.1080/18756891.2010.9727736
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发表时间:
2010-12
期刊:
影响因子:
--
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中科院分区:
文献类型:
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Vertical mining methods are very effective for mining frequent patterns and usually outperform horizontal mining methods. However, the vertical methods become ineffective since the intersection time starts to be costly when the cardinality of tidset (tid-list or diffset) is very large or there are a very large number of transactions. In this paper, we propose a novel vertical algorithm called PPV for fast frequent pattern discovery. PPV works based on a data structure called Node-lists, which is obtained from a coding prefix-tree called PPC-tree. The efficiency of PPV is achieved with three techniques. First, the Node-list is much more compact compared with previous proposed vertical structure (such as tid-lists or diffsets) since transactions with common prefixes share the same nodes of the PPC-tree. Second, the counting of support is transformed into the intersection of Node-lists and the complexity of intersecting two Node-lists can be reduced to O(m+n) by an efficient strategy, where m and n are the c...
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DOI:
10.1080/18756891.2010.9727705
发表时间:
2010-09
影响因子:
2.9
作者:
Qiao, Shaojie;Li, Tianrui;Peng, Jing;Qiu, Jiangtao
通讯作者:
Qiu, Jiangtao
DOI:
10.1145/956750.956788
发表时间:
2003-08
期刊:
--
影响因子:
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作者:
Mohammed J. Zaki;K. Gouda
通讯作者:
Mohammed J. Zaki;K. Gouda
DOI:
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发表时间:
1995-09
期刊:
--
影响因子:
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作者:
Ashok Savasere;E. Omiecinski;S. Navathe
通讯作者:
Ashok Savasere;E. Omiecinski;S. Navathe
影响因子:
8.9
作者:
Mohammed J. Zaki;Ching-Jui Hsiao
通讯作者:
Mohammed J. Zaki;Ching-Jui Hsiao
DOI:
10.1109/dasfaa.2003.1192369
发表时间:
2003-03
期刊:
Eighth International Conference on Database Systems for Advanced Applications, 2003. (DASFAA 2003). Proceedings.
影响因子:
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作者:
Guimei Liu;Hongjun Lu;Yabo Xu;J. Yu
通讯作者:
Guimei Liu;Hongjun Lu;Yabo Xu;J. Yu