9683 search results - page 584 / 1937 » Predicting query performance |
187
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WMCSA
2002
IEEE
16 years 4 days ago
2002
IEEE
We show how the database community’s notion of a generic query interface for data aggregation can be applied to ad-hoc networks of sensor devices. As has been noted in the senso...
212
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SSD
2001
Springer
15 years 11 months ago
2001
Springer
Abstract. This paper addresses the problem of finding k nearest neighbors for moving query point (we call it k-NNMP). It is an important issue in both mobile computing research an...
212
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CIKM
2006
Springer
15 years 11 months ago
2006
Springer
In this paper, we propose an approach for efficient approximative RkNN search in arbitrary metric spaces where the value of k is specified at query time. Our method uses an approx...
183
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DEXA
2006
Springer
15 years 11 months ago
2006
Springer
One of the problems associated with XML databases is the poor performance of XPath queries. Although this has attracted much attention by the research community, solutions are eith...
196
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DLOG
2007
15 years 9 months ago
2007
We present cq-programs, which enhance nonmonotonic description logics (dl-) programs by conjunctive queries (CQ) and union of conjunctive queries (UCQ) over Description Logics kno...