5221 search results - page 803 / 1045 » An On-line Problem Database |
177
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EDBT
2010
ACM
16 years 2 months ago
2010
ACM
Implementations of map-reduce are being used to perform many operations on very large data. We examine strategies for joining several relations in the map-reduce environment. Our ...
208
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XSYM
2009
Springer
16 years 1 months ago
2009
Springer
Abstract. The eXtensible Markup Language (XML) provides a powerful and flexible means of encoding and exchanging data. As it turns out, its main advantage as an encoding format (n...
222
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SEMWEB
2009
Springer
16 years 1 months ago
2009
Springer
A key question regarding the future of the semantic web is “how will we acquire structured information to populate the semantic web on a vast scale?” One approach is to enter t...
206
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DASFAA
2007
IEEE
16 years 1 months ago
2007
IEEE
Twig pattern matching problem has been widely studied in recent years. Give an XML tree T . A twig-pattern matching query, Q, represented as a query tree, is to find all the occur...
199
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ICDE
2007
IEEE
16 years 1 months ago
2007
IEEE
Trust management is a form of access control that uses delegation to achieve scalability beyond a single organization or federation. However, delegation can be difficult to contr...