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PGLDB
2003
122views Database» more  PGLDB 2003»
15 years 7 months ago
Exploring Learning Objects under Conceptual, Instructional and Didactic Perspectives
The idea of Learning Objects – “any digital resource that can be reused to support learning” – is emerging as a way to reuse learning materials in different settings and c...
Ellen Francine Barbosa, José Carlos Maldona...
PVLDB
2010
96views more  PVLDB 2010»
15 years 4 months ago
Foundations of Uncertain-Data Integration
There has been considerable past work studying data integration and uncertain data in isolation. We develop the foundations for local-as-view (LAV) data integration when the sourc...
Parag Agrawal, Anish Das Sarma, Jeffrey D. Ullman,...
PODS
2005
ACM
104views Database» more  PODS 2005»
16 years 6 months ago
Determining source contribution in integration systems
Owners of sources registered in an information integration system, which provides answers to a (potentially evolving) set of client queries, need to know their contribution to the...
Alin Deutsch, Yannis Katsis, Yannis Papakonstantin...
EDBT
2008
ACM
131views Database» more  EDBT 2008»
16 years 6 months ago
A Bayesian approach for on-line max and min auditing
In this paper we consider the on-line max and min query auditing problem: given a private association between fields in a data set, a sequence of max and min queries that have alr...
Gerardo Canfora, Bice Cavallo
GLOBE
2009
Springer
15 years 11 months ago
Designing, Specifying and Querying Metadata for Virtual Data Integration Systems
Abstract. We show how to specify and use the metadata for a virtual and relational data integration system under the local-as-view (LAV) approach. We use XML and RuleML for represe...
Leopoldo E. Bertossi, Gayathri Jayaraman