Abstract
In this paper, we focus on efficient processing of a given XML keyword query based on SLCA semantics. We propose an efficient algorithm that processes all nodes in the set of inverted Dewey label lists in a top-down way. Specifically, our method recursively divides the set of initial Dewey label lists into a set of minimum nontrivial blocks (MNBlocks), where a block consists of a set of Dewey label lists and corresponds to an XML tree. The “minimum” means that for a given block, none of its sub-blocks corresponds to a subtree that contains all keywords of the given query; the “nontrivial” means that no block can contain an empty list. Based on these MNBlocks, our method produces all qualified results by directly outputting the LCA node of all nodes in each MNBlock as a qualified SLCA node. During processing, our method can intelligently prune useless keyword nodes according to the distribution of all nodes in a given block. Our experimental results verify the performance advantages of our method according to various evaluation metrics.
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References
Bao, Z., Ling, T.W., Chen, B., Lu, J.: Effective xml keyword search with relevance oriented ranking. In: ICDE, pp. 517–528 (2009)
Chen, L.J., Papakonstantinou, Y.: Supporting top-k keyword search in xml databases. In: ICDE, pp. 689–700 (2010)
Cohen, S., Mamou, J., Kanza, Y., Sagiv, Y.: Xsearch: A semantic search engine for xml. In: VLDB, pp. 45–56 (2003)
Guo, L., Shao, F., Botev, C., Shanmugasundaram, J.: Xrank: Ranked keyword search over xml documents. In: SIGMOD Conference, pp. 16–27 (2003)
Li, G., Feng, J., Wang, J., Zhou, L.: Effective keyword search for valuable lcas over xml documents. In: CIKM, pp. 31–40 (2007)
Li, Y., Yu, C., Jagadish, H.V.: Schema-free xquery. In: VLDB, pp. 72–83 (2004)
Liu, Z., Chen, Y.: Identifying meaningful return information for xml keyword search. In: SIGMOD Conference, pp. 329–340 (2007)
Sun, C., Chan, C.Y., Goenka, A.K.: Multiway slca-based keyword search in xml data. In: WWW, pp. 1043–1052 (2007)
Tatarinov, I., Viglas, S., Beyer, K.S., Shanmugasundaram, J., Shekita, E.J., Zhang, C.: Storing and querying ordered xml using a relational database system. In: SIGMOD Conference, pp. 204–215 (2002)
Wang, W., Wang, X., Zhou, A.: Hash-Search: An Efficient SLCA-Based Keyword Search Algorithm on XML Documents. In: Zhou, X., Yokota, H., Deng, K., Liu, Q. (eds.) DASFAA 2009. LNCS, vol. 5463, pp. 496–510. Springer, Heidelberg (2009)
Xu, Y., Papakonstantinou, Y.: Efficient keyword search for smallest lcas in xml databases. In: SIGMOD Conference, pp. 537–538 (2005)
Zhou, R., Liu, C., Li, J.: Fast elca computation for keyword queries on xml data. In: EDBT, pp. 549–560 (2010)
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Zhou, J., Bao, Z., Chen, Z., Lan, G., Lin, X., Ling, T.W. (2012). Top-Down SLCA Computation Based on List Partition. In: Lee, Sg., Peng, Z., Zhou, X., Moon, YS., Unland, R., Yoo, J. (eds) Database Systems for Advanced Applications. DASFAA 2012. Lecture Notes in Computer Science, vol 7238. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-29038-1_14
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DOI: https://doi.org/10.1007/978-3-642-29038-1_14
Publisher Name: Springer, Berlin, Heidelberg
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