Browsing Data Science Institute by Author "Peristeras, Vassilios"
Now showing items 1-4 of 4
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Annotation-Based Access Control for e-Professionals
Nasirifard, Peyman; Peristeras, Vassilios (2008)Collaborative Working Environments (CWE) provide shared workspaces that enable eProfessionals to work together and share resources that they own. Most current shared workspaces provide coarse-grained role-based access ... -
An Annotation-based Access Control Model and Tools for Collaborative Information Spaces
Nasirifard, Peyman; Peristeras, Vassilios; Decker, Stefan (2008)We present an Annotation-Based Access Control model supported by a Collaboration Vocabulary (CoVoc) as a more flexible and user-centric access control approach in social platforms and shared workspaces. We present ... -
Extracting and Utilizing Social Networks from Log Files of Shared Workspaces
Nasirifard, Peyman; Peristeras, Vassilios; Hayes, Conor; Decker, Stefan (Springer, 2009)Log files of online shared workspaces contain rich information that can be further analyzed. In this paper, log-file information is used to extract object-centric and user-centric social networks. The object-centric social ... -
WSMO-PA: Formal Specification of Public Administration Service Model on Semantic Web Service Ontology
Wang, Xia; Peristeras, Vassilios; Vitvar, Tomas; Mocan, Adrian (IEEE, 2007)In this paper we define a formal model for a Public Ad- ministration service on the basis of the Web Service Modeling Ontology (WSMO). For this purpose we employ the generic public service object model of the Governance ...