2724 search results - page 390 / 545 » Optimizing Queries on Files |
174
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APWEB
2005
Springer
15 years 12 months ago
2005
Springer
Summarizing topological relations is fundamental to many spatial applications including spatial query optimization. In this paper, we examine the selectivity estimation for range w...
146
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EDBTW
2004
Springer
15 years 12 months ago
2004
Springer
In this paper, we investigate how existing social networks can benefit P2P data networks by leveraging the inherent trust associated with social links. We present a trust model t...
176
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SOFSEM
2004
Springer
15 years 11 months ago
2004
Springer
Abstract. Research on processing XML documents gained much activity in recent times. XML query languages are mostly based on XPath expressions, which are used to select parts of XM...
157
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ICDT
1997
ACM
15 years 10 months ago
1997
ACM
We develop a new schema for unstructured data. Traditional schemas resemble the type systems of programming languages. For unstructured data, however, the underlying type may be mu...
167
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ICALP
1990
Springer
15 years 10 months ago
1990
Springer
We show how (now familiar) hierarchical representations of (convex) polyhedra can be used to answer various separation queries efficiently (in a number of cases, optimally). Our e...