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 | |
| 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 | Colombia |
| City | Cartagena de Indias |
| Period | 10/21/12 → 10/25/12 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Theoretical Computer Science
- Computer Science(all)
Cite this
Eager xpath evaluation over XML streams. / Hagio, Kazuhito; Ohgami, Takashi; Bannai, Hideo; Takeda, Masayuki.
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
}
TY - GEN
T1 - Eager xpath evaluation over XML streams
AU - Hagio, Kazuhito
AU - Ohgami, Takashi
AU - Bannai, Hideo
AU - Takeda, Masayuki
PY - 2012/10/22
Y1 - 2012/10/22
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84867549164&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84867549164&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-34109-0-26
DO - 10.1007/978-3-642-34109-0-26
M3 - Conference contribution
AN - SCOPUS:84867549164
SN - 9783642341083
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 245
EP - 250
BT - String Processing and Information Retrieval - 19th International Symposium, SPIRE 2012, Proceedings
ER -