Loading...

Access Control in Semantic Social Network

Alizadeh, Mahdi | 2011

515 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 42158 (19)
  4. University: Sharif University of Technology
  5. Department: Computer Engineering
  6. Advisor(s): Jalili, Rasoul
  7. Abstract:
  8. Growth of tools that ease sharing information and resources in social networks can cause privacy issues for the users. Protecting user’s personal information against unauthorized access is a crucial task, and it is considered as a first step for preserving user’s privacy in such networks. Policies, access control rules, and the way rules are applied to online social networks are issues that are less investigated and most existing frameworks have used simple models. Growth of users joining social networks and significant volume of resources shared in these networks make such environments suitable for using semantic technology. Semantic technology is used for modeling various resources, users, and the relationships among them. In this thesis, access control requirements in online social networks are analyzed and concepts, relationships, and individuals are used for defining access control rules. Concepts and relationships among them are considered in the proposed ontology, and described with description logic. According to the collected access control requirements, various frameworks for combining description logic and rules are analyzed, and the MKNF+ framework is suggested for the combination of description logic and rules. This framework supports non-monotonic rules and considers closed-world assumption for reasoning. Moreover, various types of access control rules for protecting user’s resources are described. Furthermore, various possible conflicts among access control rules are analyzed and possible approaches for resolving such conflicts are proposed.

  9. Keywords:
  10. Social Networks ; Semantic Web ; Description Logic ; Access Control ; Nonmonotonic Logic

 Digital Object List

 Bookmark

No TOC