Sciweavers

131 search results - page 23 / 27
» Indexing and Querying XML Data for Regular Path Expressions
Sort
View
ESWS
2009
Springer
15 years 4 months ago
Ranking Approximate Answers to Semantic Web Queries
We consider the problem of a user querying semistructured data such as RDF without knowing its structure. In these circumstances, it is helpful if the querying system can perform a...
Carlos A. Hurtado, Alexandra Poulovassilis, Peter ...
DEXAW
2006
IEEE
153views Database» more  DEXAW 2006»
15 years 3 months ago
Extracting Partition Statistics from Semistructured Data
The effective grouping, or partitioning, of semistructured data is of fundamental importance when providing support for queries. Partitions allow items within the data set that sh...
John N. Wilson, Richard Gourlay, Robert Japp, Math...
JUCS
2008
138views more  JUCS 2008»
14 years 9 months ago
Schema Mappings and Agents' Actions in P2P Data Integration System
: We propose specification of schema mappings and agents' actions in XML data integration task. We discuss the problem in a highly-dynamic environment consisting of a communit...
Grazyna Brzykcy, Jerzy Bartoszek, Tadeusz Pankowsk...
PODS
2007
ACM
104views Database» more  PODS 2007»
15 years 9 months ago
XML transformation by tree-walking transducers with invisible pebbles
The pebble tree automaton and the pebble tree transducer are enhanced by additionally allowing an unbounded number of `invisible' pebbles (as opposed to the usual `visible�...
Joost Engelfriet, Hendrik Jan Hoogeboom, Bart Samw...
EDBT
2006
ACM
177views Database» more  EDBT 2006»
15 years 9 months ago
Authorization-Transparent Access Control for XML Under the Non-Truman Model
In authorization-transparent access control, users formulate their queries against the database schema rather than against authorization views that transform and hide data. The Tru...
Alberto O. Mendelzon, Renée J. Miller, Yaro...