Integrated access to multiple distributed and autonomous RDF data sources is a key challenge for many semantic web applications. As a reaction to this challenge, SPARQL, the W3C Re...
: A distributed service to model and control contextual information in mobile and ubiquitous computing environments is presented in this paper. We introduce the general user model ...
Pervasive computing environments offer a multitude of information services that provide potentially complex types of information. Therefore, when running access control for sensit...
Many information services in pervasive computing offer rich information, which is information that includes other types of information. For example, the information listed in a pe...
Annotation with security-related metadata enables discovery of resources that meet security requirements. This paper presents the NRL Security Ontology, which complements existing ...