Efficient processing of ordered XML twig pattern matching based on extended Dewey
Efficient processing of ordered XML twig pattern matching based on extended Dewey
复制标题
基于扩展Dewey的有序XML树枝模式匹配高效处理
DOI:
10.1631/jzus.a0920006
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发表时间:
2009-12
影响因子:
3.2
通讯作者:
C. Gang
中科院分区:
文献类型:
--
作者:
J. JIANG;C. Ke;S. Li-dan;L. Xiao-yan;C. Gang
Finding all occurrences of a twig pattern is a core operation of extensible markup language (XML) query processing. Holistic twig join algorithms, which avoid a large number of intermediate results, represent the state-of-the-art algorithms. However, ordered XML twig join is mentioned rarely in the literature and previous algorithms developed in attempts to solve the problem of ordered twig pattern (OTP) matching have poor performance. In this paper, we first propose a novel children linked stacks encoding scheme to represent compactly the partial ordered twig join results. Based on this encoding scheme and extended Dewey, we design a novel holistic OTP matching algorithm, called OTJFast, which needs only to access the labels of the leaf query nodes. Furthermore, we propose a new algorithm, named OTJFaster, incorporating three effective optimization rules to avoid unnecessary computations. This works well on available indices (such as B+-tree), skipping useless elements. Thus, not only is disk access reduced greatly, but also many unnecessary computations are avoided. Finally, our extensive experiments over both real and synthetic datasets indicate that our algorithms are superior to previous approaches.
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DOI:
10.1145/1062745.1062919
发表时间:
2005-05
期刊:
--
影响因子:
--
作者:
Zografoula Vagena;Nick Koudas;D. Srivastava;V. Tsotras
通讯作者:
Zografoula Vagena;Nick Koudas;D. Srivastava;V. Tsotras
DOI:
10.1145/1183614.1183730
发表时间:
2006-11
期刊:
--
影响因子:
--
作者:
Zhewei Jiang;Cheng Luo;W. Hou
通讯作者:
Zhewei Jiang;Cheng Luo;W. Hou
DOI:
10.1109/waim.2008.54
发表时间:
2008-07
期刊:
2008 The Ninth International Conference on Web-Age Information Management
影响因子:
--
作者:
Jinqing Zhu;Wei Wang;Xiaofeng Meng
通讯作者:
Jinqing Zhu;Wei Wang;Xiaofeng Meng
DOI:
10.1145/1132863.1132871
发表时间:
2006-03
期刊:
ACM Trans. Database Syst.
影响因子:
--
作者:
P. Rao;Bongki Moon
通讯作者:
P. Rao;Bongki Moon
影响因子:
11.1
作者:
Scott Boag
通讯作者:
Scott Boag