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204
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AIMSA
2010
Springer
15 years 8 months ago
2010
Springer
Abstract. Ontology based data access (OBDA) is concerned with providing access to typically very large data sources through a mediating conceptual layer that allows one to improve ...
205
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CIKM
2006
Springer
15 years 10 months ago
2006
Springer
New optimization techniques, e. g., in data stream management systems (DSMSs), make the treatment of disjunctive predicates a necessity. In this paper, we introduce and compare me...
270
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SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
In wireless sensor networks (WSNs), energy consumption and data quality are two important issues due to limited energy resources and the need for accurate data. In this scenario, i...
169
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RSCTC
1993
Springer
15 years 10 months ago
1993
Springer
: While the common kinds of uncertainties in databases (e.g., null values, disjunction, corrupt/missing data, domain mismatch, etc.) have been extensively studied, a relatively une...