972 search results - page 183 / 195 » presence 2007 |
CCS
2007
ACM
14 years 4 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 ...
CIKM
2007
Springer
14 years 4 months ago
2007
Springer
Pseudo-relevance feedback, or query expansion, has been shown to improve retrieval performance in the adhoc retrieval task. In such a scenario, a few top-ranked documents are assu...
DAWAK
2007
Springer
14 years 4 months ago
2007
Springer
Several business applications such as marketing basket analysis, clickstream analysis, fraud detection and churning migration analysis demand gradient data analysis. By employing g...
ECOOP
2007
Springer
14 years 4 months ago
2007
Springer
Abstract. Interaction protocols are a popular means to construct correct component-based systems. Aspects that modify such protocols are interesting in this context because they su...
EEMMAS
2007
Springer
14 years 4 months ago
2007
Springer
Complexity of near future and even nowadays applications is exponentially increasing. In order to tackle the design of such complex systems, being able to engineer self-organising ...