6274 search results - page 218 / 1255 » From query complexity to computational complexity |
133
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LICS
2002
IEEE
15 years 9 months ago
2002
IEEE
We study relations on trees defined by first-order constraints over a vocabulary that includes the tree extension relation Ì Ì ¼, holding if and only if every branch of Ì ex...
215
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GIS
2007
ACM
16 years 5 months ago
2007
ACM
The collection of moving object data is becoming more and more common, and therefore there is an increasing need for the efficient analysis and knowledge extraction of these data ...
158
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SEMWEB
2009
Springer
15 years 11 months ago
2009
Springer
In this paper a novel approach is presented for generating RDF graphs of arbitrary complexity from various spreadsheet layouts. Currently, none of the available spreadsheet-to-RDF ...
141
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SIGMOD
1999
ACM
15 years 9 months ago
1999
ACM
The design of webbases, database systems for supporting Webbased applications, is currently an active area of research. In this paper, we propose a 3-layer architecture for design...
138
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CHI
2010
ACM
15 years 11 months ago
2010
ACM
Children want to find information about their world, but there are barriers to finding what they seek. Young people have varying abilities to formulate complex queries and compreh...