369 search results - page 56 / 74 » Querying Distributed RDF Data Sources with SPARQL |
CIKM
2009
Springer
15 years 1 months ago
2009
Springer
In some retrieval situations, a system must search across multiple collections. This task, referred to as federated search, occurs for example when searching a distributed index o...
71
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CAISE
1999
Springer
15 years 1 months ago
1999
Springer
Abstract. A global Data warehouse (DW) integrates data from multiple distributed heterogeneous databases and other information sources. DW can be abstractly seen as a set of materi...
DBISP2P
2004
Springer
15 years 2 months ago
2004
Springer
Today, there is an increasing demand to share data with complex data types (e.g., multi-dimensional) over large numbers of data sources. One of the key challenges is sharing these ...
100
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CIKM
2010
Springer
14 years 8 months ago
2010
Springer
Computing shortest paths between two given nodes is a fundamental operation over graphs, but known to be nontrivial over large disk-resident instances of graph data. While a numbe...
55
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VLDB
2005
ACM
15 years 2 months ago
2005
ACM
To answer user queries, a data integration system employs a set of semantic mappings between the mediated schema and the schemas of data sources. In dynamic environments sources o...