NDLI: Efficient Relaxed XML Path Query Matching Based on Extended Dewey Labeling Scheme

Content Provider	IEEE Xplore Digital Library
Author	Zhe Chen
Copyright Year	2009
Abstract	With the rapid increasing popularity of XML for data representation, there is a lot of interest in relaxed query processing due to the flexible model characteristics of XML data. In this paper, we research the problem of XML path query relaxation. We define two relaxation operations, P-C to A-D edge relaxation and leaf-node-deletion. Two efficient algorithms are proposed to find relaxed answers with the minimal cost of relaxation. Specifically, DynamicStack, based on extended Dewey labeling scheme, calculates relaxed answers with stack data structure to compactly encode the potential maximal matches of path pattern. DynamicStack+ recursively constructs relaxed query pattern with leaf-node-deletion using DynamicStack to get approximate answers. Finally, extensive experiments are performed and results show that our proposed algorithms are effective to find approximate answers.
Starting Page	531
Ending Page	534
File Size	491116
Page Count	4
File Format	PDF
ISBN	9780769538655
DOI	10.1109/ISCID.2009.139
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-12-12
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Costs Heuristic algorithms Relational databases path pattern Data structures query relaxation performance Query processing XML Data models Labeling Pattern matching Computational intelligence
Content Type	Text
Resource Type	Article

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