Eager xpath evaluation over XML streams

Kazuhito Hagio; Takashi Ohgami; Hideo Bannai; Masayuki Takeda

doi:10.1007/978-3-642-34109-0-26

Eager xpath evaluation over XML streams

Kazuhito Hagio, Takashi Ohgami, Hideo Bannai, Masayuki Takeda

Mathematical Informatics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We address the XPath evaluation problem over XML streams. We consider a fragment of XPath called Conjunctive XPath (CXP). We present an algorithm that eagerly evaluates a CXP query Q against a streaming XML data D in O((|Q|∈+∈n ²)|D|) time and O(|Q|height(D) ∈+∈n·maxcands(Q,D)) space, where n is the number of location steps in Q and maxcands(Q,D) is the maximum number of nodes of D that can be candidates for answer nodes, at any one instant. The result improves the previous work of Ramanan (2009) which lazily evaluates Q against D in O((|Q|∈+∈n·height(D))|D|) time using the same space.

Original language	English
Title of host publication	String Processing and Information Retrieval - 19th International Symposium, SPIRE 2012, Proceedings
Pages	245-250
Number of pages	6
DOIs	https://doi.org/10.1007/978-3-642-34109-0-26
Publication status	Published - Oct 22 2012
Event	19th International Symposium on String Processing and Information Retrieval, SPIRE 2012 - Cartagena de Indias, Colombia Duration: Oct 21 2012 → Oct 25 2012

Publication series

Name	Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume	7608 LNCS
ISSN (Print)	0302-9743
ISSN (Electronic)	1611-3349

Other

Other	19th International Symposium on String Processing and Information Retrieval, SPIRE 2012
Country/Territory	Colombia
City	Cartagena de Indias
Period	10/21/12 → 10/25/12

All Science Journal Classification (ASJC) codes

Theoretical Computer Science
Computer Science(all)

Access to Document

10.1007/978-3-642-34109-0-26

Cite this

Hagio, K., Ohgami, T., Bannai, H., & Takeda, M. (2012). Eager xpath evaluation over XML streams. In String Processing and Information Retrieval - 19th International Symposium, SPIRE 2012, Proceedings (pp. 245-250). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 7608 LNCS). https://doi.org/10.1007/978-3-642-34109-0-26

Eager xpath evaluation over XML streams. / Hagio, Kazuhito; Ohgami, Takashi; Bannai, Hideo et al.

String Processing and Information Retrieval - 19th International Symposium, SPIRE 2012, Proceedings. 2012. p. 245-250 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 7608 LNCS).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Hagio, K, Ohgami, T, Bannai, H & Takeda, M 2012, Eager xpath evaluation over XML streams. in String Processing and Information Retrieval - 19th International Symposium, SPIRE 2012, Proceedings. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 7608 LNCS, pp. 245-250, 19th International Symposium on String Processing and Information Retrieval, SPIRE 2012, Cartagena de Indias, Colombia, 10/21/12. https://doi.org/10.1007/978-3-642-34109-0-26

Hagio K, Ohgami T, Bannai H, Takeda M. Eager xpath evaluation over XML streams. In String Processing and Information Retrieval - 19th International Symposium, SPIRE 2012, Proceedings. 2012. p. 245-250. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)). https://doi.org/10.1007/978-3-642-34109-0-26

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Eager xpath evaluation over XML streams

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