Anonymous mechanisms in group decision support systems communication
Decision Support Systems
Protecting Respondents' Identities in Microdata Release
IEEE Transactions on Knowledge and Data Engineering
Security and Privacy in User Modeling
Security and Privacy in User Modeling
k-anonymity: a model for protecting privacy
International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems
Privacy and identity management for everyone
Proceedings of the 2005 workshop on Digital identity management
Privacy and data protection in technology-enhanced professional learning
AICT-ICIW '06 Proceedings of the Advanced Int'l Conference on Telecommunications and Int'l Conference on Internet and Web Applications and Services
Privacy-aware user interfaces within collaborative environments
Proceedings of the international workshop in conjunction with AVI 2006 on Context in advanced interfaces
Why member portraits can undermine participation
CSCL '05 Proceedings of th 2005 conference on Computer support for collaborative learning: learning 2005: the next 10 years!
Anonymous Credentials for Privacy-Preserving E-learning
MCETECH '08 Proceedings of the 2008 International MCETECH Conference on e-Technologies
Collective information practice: emploring privacy and security as social and cultural phenomena
Human-Computer Interaction
Privacy enhanced personalization in e-learning
Proceedings of the 2006 International Conference on Privacy, Security and Trust: Bridge the Gap Between PST Technologies and Business Services
Toward Social Learning Environments
IEEE Transactions on Learning Technologies
Privacy and Confidentiality in E-Learning Systems
ICIW '09 Proceedings of the 2009 Fourth International Conference on Internet and Web Applications and Services
Implementing Role-and Relationship-based Identity Management in E-learning Environments
Proceedings of the 2009 conference on Artificial Intelligence in Education: Building Learning Systems that Care: From Knowledge Representation to Affective Modelling
Towards privacy-aware elearning
PET'05 Proceedings of the 5th international conference on Privacy Enhancing Technologies
Facilitating Trust in Privacy-Preserving E-Learning Environments
IEEE Transactions on Learning Technologies
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An e-learning discussion forum, an essential component of today's e-learning systems, offers a platform for social learning activities. However, as learners participate in the discussion forum, privacy emerges as a major concern. Privacy concerns in social learning activities originate from one learner's inability to convey a desired presentation of oneself to another learner. A user-controlled identity management (IM) allows a user to communicate, depending on a context, as much or as little information about the self as they want, and therefore, can provide users desired control over their contextual representations, which in turn contributes to privacy. A role- and relationship-based identity management (RRIM) model provides a coarse-to-fine classification of context based on purpose, role, and relationship. At the coarse level of context, a purpose-based identity allows presentation of oneself for a specific purpose. At the fine level of context, a role-based identity can facilitate presentation of oneself within the capacity of a role, while a relationship-based identity allows a user to reveal or conceal information appropriate for a relationship. We employ the model in a real e-learning system (i.e., iHelp) to facilitate privacy for e-learners in a discussion forum. The results of a pilot study and a large-scale user study in a real course (i.e., Introduction to Sociology) validate that RRIM features help learners maintain their desired level of privacy in an e-learning discussion forum.