2145 search results - page 36 / 429 » Pattern-Based Query Answering |
AMW
2009
15 years 6 days ago
2009
Abstract. A Data Warehouse (DW) is a data repository that organizes and physically integrates data from multiple sources under special kinds of schemas. A DW is composed by a set o...
169
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SIGMOD
2005
ACM
15 years 11 months ago
2005
ACM
We review the notion of hypertree width, a measure of the degree of cyclicity of hypergraphs that is useful for identifying and solving efficiently easy instances of hard problems...
101
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BTW
2007
Springer
15 years 5 months ago
2007
Springer
Abstract: Peer data management systems (PDMS) are a highly dynamic, decentralized infrastructure for large-scale data integration. They consist of a dynamic set of autonomous peers...
CASCON
2004
15 years 15 days ago
2004
For several reasons a database may not satisfy certain integrity constraints (ICs), for example, when it is the result of integrating several independent data sources. However, mo...
101
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DEXA
2007
Springer
15 years 5 months ago
2007
Springer
The retrieval problem is one of the main reasoning tasks for knowledge base systems. Given a knowledge base K and a concept C, the retrieval problem consists of finding all indivi...