2027 search results - page 272 / 406 » An Adaptive Query Execution System for Data Integration |
152
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CCS
2007
ACM
15 years 11 months ago
2007
ACM
In this paper, we study the maintenance of role-based access control (RBAC) models in database environments using transitive closure relations. In particular, the algorithms that ...
176
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W2GIS
2009
Springer
15 years 11 months ago
2009
Springer
Abstract. A review is provided of some database and representation issues involved in the implementation of geographic information systems (GIS). The increasing popularity of web-b...
157
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KDD
2002
ACM
16 years 5 months ago
2002
ACM
This paper presents an approach to automatically optimizing the retrieval quality of search engines using clickthrough data. Intuitively, a good information retrieval system shoul...
135
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HICSS
1994
IEEE
15 years 9 months ago
1994
IEEE
In the area of telerobotics, where remote systems are to be controlled, it is helpful to plan subsequent operations based on as much relevant data as possible. The simulation of t...
129
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DAWAK
2005
Springer
15 years 10 months ago
2005
Springer
Abstract. From the point of view of a data warehouse system its part of collecting and receiving information from other systems is crucial for all subsequent business intelligence ...