Sciweavers

521 search results - page 10 / 105
» Answering Queries by Semantic Caches
Sort
View
EDBTW
2006
Springer
13 years 11 months ago
Semantically Correct Query Answers in the Presence of Null Values
For several reasons a database may not satisfy a given set of integrity constraints (ICs), but most likely most of the information in it is still consistent with those ICs; and cou...
Loreto Bravo, Leopoldo E. Bertossi
CORR
2010
Springer
147views Education» more  CORR 2010»
13 years 4 months ago
Matching Dependencies with Arbitrary Attribute Values: Semantics, Query Answering and Integrity Constraints
Matching dependencies (MDs) are used to declaratively specify the identification (or matching) of certain attribute values in pairs of database tuples when some similarity conditi...
Jaffer Gardezi, Leopoldo E. Bertossi, Iluju Kiring...
VLDB
2000
ACM
129views Database» more  VLDB 2000»
13 years 11 months ago
Offering a Precision-Performance Tradeoff for Aggregation Queries over Replicated Data
Strict consistency of replicated data is infeasible or not required by many distributed applications, so current systems often permit stale replication, in which cached copies of ...
Chris Olston, Jennifer Widom
AIIA
2007
Springer
14 years 1 months ago
Instance-Based Query Answering with Semantic Knowledge Bases
A procedure founded in instance-based learning is presented, for performing a form of analogical reasoning on knowledge bases expressed in a wide range of ontology languages. The p...
Nicola Fanizzi, Claudia d'Amato, Floriana Esposito
SEMWEB
2007
Springer
14 years 1 months ago
SMART: A Web-Based, Ontology-Driven, Semantic Web Query Answering Application
SMART (Semantic web information Management with automated Reasoning Tool) is an open-source project, which aims to provide intuitive tools for life scientists for represent, integr...
Alexander De Leon Battista, Natalia Villanueva-Ros...