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dc.contributor.authorFong, Philipen_US
dc.contributor.authorMehregan, Pooyaen_US
dc.contributor.authorKrishnan, Ramen_US
dc.date.accessioned2013-11-29T21:16:09Z
dc.date.available2013-11-29T21:16:09Z
dc.date.issued2013-11-29
dc.identifier.urihttp://hdl.handle.net/1880/49907
dc.description.abstractUsers of an online community are willing to share resources because they can expect reasonable behaviour from other members of the community. Such expectations are known as social contracts. In this work, we study the specification and enforcement of social contracts in a computer mediated collaboration environment. Specifically, we examine social contracts that contain both relationship- and history-based elements. A series of policy languages, all based on modal and temporal logics, with increasing expressiveness, have been proposed to express social contracts. Reference monitors are designed to correctly and efficiently enforce the specified policies. A technique called “relational abstraction” is employed to reduce the reference monitor into a purely relationship-based protection system, that is, what is commonly known as a social network system.en_US
dc.language.isoengen_US
dc.subjectSocial contracts, Communityen_US
dc.subject.otherRelational abstraction, Social network systemen_US
dc.titleRelational Abstraction in Community-Based Secure Collaborationen_US
dc.typetechnical reporten_US
dc.description.refereedNoen_US
dc.publisher.corporateUniversity of Calgaryen_US
dc.publisher.facultyScienceen_US
dc.identifier.department2013-1045-12en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/30603
thesis.degree.disciplineComputer Scienceen_US


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