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ShareAlike Your data: Self-referential usage policies for the semantic web

ShareAlike Your data: Self-referential usage policies for the semantic web

This video was recorded at 10th International Semantic Web Conference (ISWC), Bonn 2011. Numerous forms of policies, licensing terms, and related conditions are associated with Web data and services. A natural goal for facilitating the reuse and re-combination of such content is to model usage policies as part of the data so as to enable their exchange and automated processing. This paper thus proposes a concrete policy modelling language. A particular difficulty are self-referential policies such as Creative Commons ShareAlike, that mandate that derived content is published under some license with the same permissions and requirements. We present a general semantic framework for evaluating such recursive statements, show that it has desirable formal properties, and explain how it can be... Show More

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