2608 search results - page 149 / 522 » Inferring Answers to Queries |
274
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ICDE
2001
IEEE
16 years 7 months ago
2001
IEEE
We study the problem of approximately answering aggregation queries using sampling. We observe that uniform sampling performs poorly when the distribution of the aggregated attrib...
142
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WWW
2008
ACM
16 years 6 months ago
2008
ACM
This paper proposes several vectorial operators for processing XML twig queries, which are easy to be performed and inherently efficient for both Ancestor-Descendant (A-D) and Par...
164
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ISPA
2004
Springer
15 years 11 months ago
2004
Springer
The demand of information services is popular in recent years. However, the requested of correct answer in a mobile environment needs to have more attentions. This is due to the sc...
162
Voted
WWW
2006
ACM
16 years 6 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...
162
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ISAAC
2005
Springer
15 years 11 months ago
2005
Springer
In this paper we present space-query trade-offs for external memory data structures that answer shortest path queries on planar directed graphs. For any S = Ω(N1+ ) and S = O(N2...