Copyright Management for the LUISA Semantic Learning Content Management System

Copyright Management for the LUISA Semantic Learning Content Management System Roberto García Universitat de Lleida, Spain Tomas Pariente ATOS Origin SAE, Spain www.luisa-project.eu LUISA is an European Comission FP6 funded Specific Targeted Research Project

Table of Contents
Introduction
Motivation
Related Work
Proposal
Copyright Model
License Modelling
Conclusions & Future Work

Introduction
“ Web-spread” of e-Learning solutions requires Interoperability
Enabler: richer semantics than current metadata specifications for learning resources
LUISA (EU-IST-FP6): reference semantic and service-oriented architecture for e-Learning
Search, interchange and delivery of learning objects
Face interoperability at different levels using Semantic Web technologies

Motivation
At the content copyright level: eLearning DRM interoperability
Main problem: lack of structured and formal ways to express the licensing terms of learning objects
Sakai : predefined and simple copyright status sentences
“ Material is in public domain” or “I hold copyright”
“ Use copyright below” + text box
LOM : set of attributes for stating learning object rights:
“ Cost”, “Copyright and Other Restrictions” and “Description”

Related Work
Creative Commons:
Focus on open licensing schemes
e.g. Open Courseware
Extension for custom licensing schemes (CCPlus), but not based on formalised license building blocks
DRM Standards:
ISO/IEC MPEG-21 Rights Expression Language (REL)
Open Digital Rights Language (ODRL)

Related Work
DRM Standards issues [1]:
Don’t scale well to open environments like the Web
More appropriate for closed domains
Cause interoperability issues
One of the main DRM end-users complains
Rights language limited expressivity
Difficult to accommodate copyright law
Standardisation based on formal language grammar, no formal semantics
[1] Electronic Frontier Foundation Report by Doctorow, 2005

Proposal
Use the Copyright Ontology [1] in order to model e-Learning copyright licenses
More expressive than XML approaches
Facilitates interoperability , works at the semantic level
Based on a copyright law model, WIPO worldwide recommendations [2]
Also based on Semantic Web technologies
Copyright Ontology: provides the building blocks and restrictions to flexibly model LOs licensing terms
[1] Copyright Ontology, http://rhizomik.net/ontologies/copyrightonto [2] World Intellectual Property Organisation, http://www.wipo.int

Copyright Model Rights Model

Copyright Model Victor Hugo’s Les Misérables Creation Model

Copyright Model Action Model

Copyright Model
Actions governed by rights, economic rights :
Reproduction Right: Copy
Distribution Right: Distribute
More specifically: Sell , Rent and Lend
Public Performance Right: Perform
Fixation Right: Record
Communication Right: Broadcast and Make Available .
Transformation Right: Derive
Specialisations: Adapt and Translate

License Modelling
Primitive actions – case roles  action participants
initiator resource goal essence Action agent, effector instrument result, recipient patient, theme Process agent, origin matter result, recipient patient, theme Transfer agent, origin instrument, medium experiencer, recipient theme Spatial origin path destination location Temporal start duration completion pointInTime Ambient reason manner aim, consequence condition

License Modelling
Combine these building blocks to model licenses
Both commercial and open access terms
Main component: Action Pattern
Defined combining restrictions using logical operators
Pattern ≡ Copy ⊓ ∀ pointInTime. ≥ 2008-01-01, ≤ 2008-06-30 ⊓ ∃ agent.Subscribers ⊓ ∃ theme.{learningObject}

License Modelling
Additional actions and case roles:
Agree (Disagree): state what is permitted (prohibited)
condition : links to another pattern that must satisfied
aim : links condition pattern to conditioned one
consequence: links pattern to obliged one
:agreement a co:Agree; co:agent :owner; co:theme :Pattern. Condition ≡ Transfer ⊓ ∃ recipient.{owner} ⊓ ∃ theme.{3EurosAmount} ∃agent.Subscribers ⊓ ∃ aim.Pattern ⊓ (≤ 1 aim) :Pattern co:condition :Condition.

License Modelling
Description Logic reasoners
implement pattern matching
If instance action classified in OWL Class for pattern
Use SPARQL queries to check action permitted by agreed pattern and condition fulfilment:
ASK { ?agreement rdf:type co:Agree; co:theme ?pattern . :copy rdf:type ?pattern ; co:agent ?consumer ; co:condition ?conditionPattern . ?condition rdf:type ?conditionPattern ; co:agent ?consumer ; co:aim :copy.}

Semantic DRM module for LUISA based on the Copyright Ontology
Facilitate interoperability
Flexible enough to accommodate different licensing schemes
Future work:
Model LUISA partners licenses
Test the whole range of LUISA scenarios
Check scalability

Copyright Management for the LUISA Semantic Learning Content Management System

by rogargon on Sep 25, 2008

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Copyright Management for the LUISA Semantic Learning Content Management System — Presentation Transcript