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ACSAC
2006
IEEE
16 years 1 months ago
A Study of Access Control Requirements for Healthcare Systems Based on Audit Trails from Access Logs
In healthcare, role-based access control systems are often extended with exception mechanisms to ensure access to needed informationeven when the needs don’t followthe expected ...
Lillian Røstad, Ole Edsberg
CISIS
2008
IEEE
15 years 8 months ago
Web Performance and Behavior Ontology
We present a web system architecture using ontologies to improve the behavior of the system from the performance viewpoint. Since web system performance indexes depend on state an...
Carlos Guerrero, Carlos Juiz, Ramón Puigjan...
WWW
2007
ACM
16 years 7 months ago
Predicting clicks: estimating the click-through rate for new ads
Search engine advertising has become a significant element of the Web browsing experience. Choosing the right ads for the query and the order in which they are displayed greatly a...
Matthew Richardson, Ewa Dominowska, Robert Ragno
ECTEL
2006
Springer
15 years 10 months ago
A Formal Model of Learning Object Metadata
In this paper, we introduce a new, formal model of learning object metadata. The model enables more formal, rigorous reasoning over metadata. An important feature of the model is t...
Kris Cardinaels, Erik Duval, Henk J. Olivié
SGAI
2007
Springer
16 years 1 months ago
Evolving a Dynamic Predictive Coding Mechanism for Novelty Detection
Novelty detection is a machine learning technique which identifies new or unknown information in large data sets. We present our current work on the construction of a new novelty...
Simon J. Haggett, Dominique F. Chu, Ian W. Marshal...