UCT CS Research Document Archive

Extending ODRL and XrML to Enable Bi-Directional Communication

Arnab, Alapan and Andrew Hutchison (2004) Extending ODRL and XrML to Enable Bi-Directional Communication. Technical Report 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.

EPrint Type:Departmental Technical Report
ID Code:197
Deposited By:Arnab, A
Deposited On:15 December 2004