685 search results - page 101 / 137 » Personalized Queries under a Generalized Preference Model |
SOSP
2005
ACM
14 years 4 months ago
2005
ACM
This paper describes a general approach to constructing cooperative services that span multiple administrative domains. In such environments, protocols must tolerate both Byzantin...
CCS
2007
ACM
14 years 1 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 ...
SACMAT
2009
ACM
14 years 2 months ago
2009
ACM
An access control system is often viewed as a state transition system. Given a set of access control policies, a general safety requirement in such a system is to determine whethe...
ANZIIS
1996
IEEE
13 years 12 months ago
1996
IEEE
This paper describes the design and developmentof an expert system for tourist information center. The expert system was built to recommend a suitable travel schedule that satisfi...
WSDM
2010
ACM
14 years 5 months ago
2010
ACM
We consider a set of views stating possibly conflicting facts. Negative facts in the views may come, e.g., from functional dependencies in the underlying database schema. We want ...