Sciweavers

347 search results - page 22 / 70
» Certain answers for XML queries
Sort
View
ICDE
2006
IEEE
232views Database» more  ICDE 2006»
14 years 10 months ago
Dual Labeling: Answering Graph Reachability Queries in Constant Time
Graph reachability is fundamental to a wide range of applications, including XML indexing, geographic navigation, Internet routing, ontology queries based on RDF/OWL, etc. Many ap...
Haixun Wang, Hao He, Jeffrey Xu Yu, Jun Yang 0001,...
ISMIS
2000
Springer
14 years 8 days ago
Extended Query Answering Using Integrity Rules
Abstract. The conventional use of databases is commonly restricted to the retrieval of factual data in the form of tuples or records. However most databases also contain metadata i...
Barry G. T. Lowden, Jerome Robinson
VLDB
2004
ACM
93views Database» more  VLDB 2004»
14 years 2 months ago
Indexing Temporal XML Documents
Different models have been proposed recently for representing temporal data, tracking historical information, and recovering the state of the document as of any given time, in XM...
Alberto O. Mendelzon, Flavio Rizzolo, Alejandro A....
EDBT
2006
ACM
121views Database» more  EDBT 2006»
14 years 8 months ago
A Decomposition-Based Probabilistic Framework for Estimating the Selectivity of XML Twig Queries
In this paper we present a novel approach for estimating the selectivity of XML twig queries. Such a technique is useful for approximate query answering as well as for determining...
Chao Wang, Srinivasan Parthasarathy, Ruoming Jin
DLOG
2003
13 years 10 months ago
Incremental Query Answering for Implementing Document Retrieval Services
Agent systems that search the Semantic Web are seen as killer applications for description logic (DL) inference engines. The guiding examples for the Semantic Web involve informat...
Volker Haarslev, Ralf Möller