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|Abstract=Numerous forms of policies, licensing terms, and related conditions are
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associated with Web data and services. A natural goal for facilitating the
 +
re-use and re-combination of such content is to model usage policies as part of
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the data so as to enable their exchange and automated processing. This paper
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thus proposes a concrete policy modelling language. A particular difficulty are
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''self-referential'' policies such as ''Creative Commons ShareAlike'',
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that mandate that derived content is published under some license with the same
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permissions and requirements. We present a general semantic framework for
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evaluating such recursive statements, show that it has desirable formal
 +
properties, and explain how it can be evaluated using existing tools. We then
 +
show that our approach is compatible with both OWL DL and Datalog, and
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illustrate how one can concretely model self-referential policies in these
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languages to obtain the desired conclusions.
 
|Link=http://people.aifb.kit.edu/ssp/kroetzsch_speiser_sharealike_your_data_tr.pdf
 
|Link=http://people.aifb.kit.edu/ssp/kroetzsch_speiser_sharealike_your_data_tr.pdf
 
|Forschungsgruppe=Wissensmanagement
 
|Forschungsgruppe=Wissensmanagement
 
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Version vom 1. Juli 2011, 14:04 Uhr


Expressing Self-Referential Usage Policies for the Semantic Web




Published: 2011 Juni
Institution: Institut AIFB, KIT
Erscheinungsort / Ort: Karlsruhe
Archivierungsnummer:3014

BibTeX



Kurzfassung
Numerous forms of policies, licensing terms, and related conditions are associated with Web data and services. A natural goal for facilitating the re-use 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 evaluated using existing tools. We then show that our approach is compatible with both OWL DL and Datalog, and illustrate how one can concretely model self-referential policies in these languages to obtain the desired conclusions.

Weitere Informationen unter: Link



Forschungsgruppe

Wissensmanagement


Forschungsgebiet

Semantische Technologien, Beschreibungslogik, Logik, Semantic Web