Now showing items 1-3 of 3

  • 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 ...