686 search results - page 62 / 138 » Query Answering in Peer-to-Peer Data Exchange Systems |
174
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DEXAW
2005
IEEE
15 years 12 months ago
2005
IEEE
We present the first prototype of INDUS (Intelligent Data Understanding System), a federated, query-centric system for information integration and knowledge acquisition from dist...
264
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GIS
2007
ACM
16 years 7 months ago
2007
ACM
Accurate and efficient integration of geospatial data is an important problem with applications in areas such as emergency response and urban planning. Some of the key challenges ...
234
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GIS
2002
ACM
15 years 6 months ago
2002
ACM
The proliferation of spatial data on the Internet is beginning to allow a much wider access to data currently available in various Geographic Information Systems (GIS). In order t...
272
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SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
Supporting ranking queries in database systems has been a popular research topic recently. However, there is a lack of study on supporting ranking queries in data warehouses where...
193
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AICOM
2004
15 years 6 months ago
2004
Abstract. We address the problem of answering queries using expressive symmetric inter-schema constraints which allow to establish mappings between several heterogeneous informatio...