1216 search results - page 195 / 244 » Online Prediction with Privacy |
CCS
2007
ACM
14 years 3 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 ...
CCS
2007
ACM
14 years 3 months ago
2007
ACM
This paper studies an active underground economy which specializes in the commoditization of activities such as credit card fraud, identity theft, spamming, phishing, online crede...
DIM
2006
ACM
14 years 2 months ago
2006
ACM
User centricity is a significant concept in federated identity management (FIM), as it provides for stronger user control and privacy. However, several notions of user-centricity...
CCS
2005
ACM
14 years 2 months ago
2005
ACM
In a reputation-based trust-management system, agents maintain information about the past behaviour of other agents. This information is used to guide future trust-based decisions...
CCS
2005
ACM
14 years 2 months ago
2005
ACM
Existing reputation systems used by online auction houses do not address the concern of a buyer shopping for commodities—finding a good bargain. These systems do not provide in...