5221 search results - page 275 / 1045 » An On-line Problem Database |
211
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ICDT
2010
ACM
15 years 8 months ago
2010
ACM
When a query is evaluated under bag semantics, each answer is returned as many times as it has derivations. Bag semantics has long been recognized as important, especially when ag...
151
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SIGIR
2002
ACM
15 years 6 months ago
2002
ACM
We compare standard global IR searching with user-centric localized techniques to address the database selection problem. We conduct a series of experiments to compare the retriev...
170
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PVLDB
2010
15 years 5 months ago
2010
The shift to multi-core hardware brings new challenges to database systems, as the software parallelism determines performance. Even though database systems traditionally accommod...
184
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DASFAA
2011
IEEE
14 years 10 months ago
2011
IEEE
Abstract. Graph-structured databases have numerous recent applications including the Semantic Web, biological databases and XML, among many others. In this paper, we study the main...
199
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SIGMOD
2011
ACM
14 years 9 months ago
2011
ACM
Over the last decade the cost of producing genomic sequences has dropped dramatically due to the current so called “next-gen” sequencing methods. However, these next-gen seque...