Sciweavers

642 search results - page 58 / 129
» Answering XML Queries on Heterogeneous Data Sources
Sort
View
BIOCOMP
2006
13 years 10 months ago
Mapping Biological XML DTDs Using Ontology
Several biological databases exist which use different formats for storing data. Further, each database has its own schema and a query interface. There exist no standard conversio...
Rana Hashmy
PODS
2009
ACM
86views Database» more  PODS 2009»
14 years 9 months ago
Reverse data exchange: coping with nulls
An inverse of a schema mapping M is intended to "undo" what M does, thus providing a way to perform "reverse" data exchange. In recent years, three different f...
Ronald Fagin, Phokion G. Kolaitis, Lucian Popa, Wa...
EDBTW
2004
Springer
14 years 2 months ago
Clustering Structured Web Sources: A Schema-Based, Model-Differentiation Approach
Abstract. The Web has been rapidly “deepened” with the prevalence of databases online. On this “deep Web,” numerous sources are structured, providing schema-rich data– Th...
Bin He, Tao Tao, Kevin Chen-Chuan Chang
ASWC
2009
Springer
13 years 10 months ago
Merging and Ranking Answers in the Semantic Web: The Wisdom of Crowds
In this paper we propose algorithms for combining and ranking answers from distributed heterogeneous data sources in the context of a multi-ontology Question Answering task. Our pr...
Vanessa Lopez, Andriy Nikolov, Miriam Ferná...
CIA
2001
Springer
14 years 1 months ago
Supporting Information Integration with Autonomous Agents
The large amount of information that is spread over the Internet is an important resource for all people but also introduces some issues that must be faced. The dynamism and the un...
Sonia Bergamaschi, Giacomo Cabri, Francesco Guerra...