Extending ODRL and XrML to Enable Bi-Directional Communication

Arnab, Alapan and Hutchison, Andrew (2004) Extending ODRL and XrML to Enable Bi-Directional Communication, CS04-28-00, Department of Computer Science, University of Cape Town.

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Current rights expression languages (RELs) only allow for rights holders to dictate terms to the end users. This limits their use as a means for negotiating electronic contracts and end users are not able to request for changes in their rights contracts. In this paper we propose extensions to two popular XML based RELs: ODRL and XrML that allow for end users to request changes as well as the rights holder to grant or deny these changes. These extensions allow the end user to request for changes to their current rights, and for the rights holder to grant or refuse the request. We also provide 2 examples for each REL to demonstrate possible uses of our extensions.

Item Type: Technical report
Additional Information: This report is based on a paper that was originally submitted to the ACM Workshop on Digital Rights Management. While the paper was not accepted, the reviewers gave a lot of constructive criticisms, and many of the recomendations and criticisms have been incorporated and addressed in this report. We would like the thank the reviewers on their detailed reviews.
Date Deposited: 15 Dec 2004
Last Modified: 10 Oct 2019 15:35
URI: http://pubs.cs.uct.ac.za/id/eprint/197

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