1018 search results - page 89 / 204 » On the minimization of XPath queries |
159
Voted
SEBD
2008
15 years 3 months ago
2008
Abstract. Peer Data Management Systems (PDMSs) have been recently proposed as an evolution of Peer-To-Peer (P2P) systems toward a more semantics-based description of peers' co...
108
Voted
WWW
2006
ACM
16 years 2 months ago
2006
ACM
An important issue arising from large scale data integration is how to efficiently select the top-K ranking answers from multiple sources while minimizing the transmission cost. T...
151
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SIGMOD
2001
ACM
16 years 1 months ago
2001
ACM
The ability to approximately answer aggregation queries accurately and efficiently is of great benefit for decision support and data mining tools. In contrast to previous sampling...
128
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ISMIS
2000
Springer
15 years 5 months ago
2000
Springer
A top-down query processing method for first order deductive databases under the disjunctive well-founded semantics (DWFS) is presented. The method is based upon a characterisation...
GEOINFORMATICA
2006
15 years 1 months ago
2006
Existing estimation approaches for spatial databases often rely on the assumption that data distribution in a small region is uniform, which seldom holds in practice. Moreover, the...