365 search results - page 38 / 73 » Answering Non-Monotonic Queries in Relational Data Exchange |
176
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VLDB
2007
ACM
15 years 12 months ago
2007
ACM
Several recent papers have focused on OLAP over imprecise data, where each fact can be a region, instead of a point, in a multidimensional space. They have provided a multiple-wor...
DEXAW
2005
IEEE
15 years 1 months ago
2005
IEEE
In this paper, we study semistructured data and indexes preserving inclusion constraints. A semistructured datum is modelled by multi-rooted edge-labeled directed graphs. We consi...
204
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ICDE
2002
IEEE
16 years 1 months ago
2002
IEEE
With the growth of the Web, there has been a rapid increase in the number of users who need to access online databases without having a detailed knowledge of the schema or of quer...
123
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ADVIS
2004
Springer
15 years 5 months ago
2004
Springer
Data mining is an interactive and iterative process. Users issue series of similar queries until they receive satisfying results, yet currently available data mining systems do not...
115
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ASWC
2009
Springer
15 years 6 months ago
2009
Springer
Abstract. We consider the problem of designing data wrapping ontologies whose purpose is to describe relational data sources and to provide a semantically enriched access to the un...