2229 search results - page 177 / 446 » The Case for Grounding Databases |
158
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PODS
2007
ACM
16 years 6 months ago
2007
ACM
In [3], we introduced a framework for querying and updating probabilistic information over unordered labeled trees, the probabilistic tree model. The data model is based on trees ...
150
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DOLAP
2006
ACM
16 years 12 days ago
2006
ACM
Motivated by the increasing need to analyze complex, uncertain multidimensional data this paper proposes probabilistic OLAP queries that are computed using probability distributio...
185
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IDEAS
2005
IEEE
16 years 1 days ago
2005
IEEE
— XPath is a common language for selecting nodes in an XML document. XPath uses so called path expressions which describe a navigation path through semistructured data. In the la...
166
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APWEB
2004
Springer
15 years 12 months ago
2004
Springer
Abstract. Integrity constraints play a fundamental role in defining semantics in both conventional databases and in XML documents. In this paper we generalize previous approaches ...
168
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GISCIENCE
2004
Springer
15 years 11 months ago
2004
Springer
In geospatial applications with heterogeneous databases, an ontology-driven approach to data integration relies on the alignment of the concepts of a global ontology that describe ...