organic.edunet - terena€¦ · organic.edunet nikos palavitsinis greek research & technology...
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
Organic.Edunet
Nikos Palavitsinis
Greek Research & Technology Network
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
Structure
• Introduction• Organic.Edunet Architecture• Metadata AP• Tools (portal and confolio demo)• Quality Issues• Challenges
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
In a nutshell…
A Multilingual Federation of Learning Repositories with Quality Content for the Awareness and Education of European Youth about Organic Agriculture and Agroecology
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Objectives (1/5)
• Support stakeholders producing content about OA & AE
• Describe according to multilingual, standard-complying metadata
• Publish in online federation of learning repositories
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Objectives (2/5)
• Deploy a multilingual online environment on top of the online federation of repositories
• To facilitate end-users’ search, retrieval, access and use of learning resources
the Organic.Edunet Web portal
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Objectives (3/5)
• Study educational scenarios to support the teaching of OA & AE relevant topics
• Use Organic.Edunet Web portal to find learning resources in the repositories
• Targeted user organisations• High-schools• Agricultural universities
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Objectives (4/5)
• Involve various European schools & universities to evaluate project results
• Focused pilot trials within Organic.Edunet partner institutions
• Open validation events within Organic.Edunet affiliated institutions
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Objectives (5/5)
• Create organisational structures to support the sustainability of project results
• Reinforce the cooperation of stakeholders in the OA & AE content area
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
Organic.Edunet Architecture
To make a long story short…
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
software reuse• existing software components adapted,
extended, integrated• SCAM (backend) repository• SHAME metadata editor• Confolio portfolio Web frontend• LOMR semantic repository & search• CollaFiS collaborative filtering service
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
SHAME Editor+
Confolio
Repositories Tools
Learning Content Management Module
Content Providers
SCAM Repositories
SCAM Repositories
repositories management
module
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
learning resources exchange module
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
semantic services module
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
Metadata
Profiling IEEE LOM to fit the Organic Agriculture
and Agroecology fields
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
process
Used in specific community
E.g. Publishing houses of agricultural
books
Metadata Application Profile
Metadata Standard
IEEE LOM
Profiled
Refined
Adapted
…to meet context-specific
community needs
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
outcomes: metadata
• Multilingual version of metadata schema for annotating learning resources
• Organic.Edunet IEEE LOM Application Profile (AP)• based on European Schoolnet’s LRE LOM AP
• extensive review of existing schemas• through an expert group of CEN/ISSS WS-LT
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
Organic.Edunet AP
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
general elements
• General information about the LO–Specialized
“Coverage” element with values from the LRE Thesauri “160. Countries and Geopolitical Areas”
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
meta-metadata & life cycle
• Adopted values for the “Contribute.Role” element from LRE
• Data about past and current state of the LO
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
technical
• Kept the LOM elements and value spaces
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
educational elements
• Adopted the LRE v3.0 Vocabulary for:–Learning Resource
Type– Intended End User
Role–Context
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
rights
• Rights.Description–Creative Commons
licences were incorporated
–With two simple questions:• Will you allow commercial uses of your work?• Allow modifications of your work?
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
relation
• Relation.Kind–Adopted the
values from LRE v3.0
–Added them to the existing LOM ones
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
annotation
• Annotation.Description–Restricted the LOM
value space–Vocabulary based on
the Organic.Edunet quality strategy
– Indicates the quality status of a resource
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
classification
• Organic.Edunet Ontology
• AGROVOC Thesaurus• CAB Thesaurus• LRE Thesauri
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
Organic.Edunet Tools
Confolio Repository Suite of Tools &
Organic.Edunet Federation Web Portal
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
Repository Tools demo
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
Metadata Quality
“Quality is never an accident; it is always the result of high intention, sincere effort, intelligent direction and skillful execution; it represents the
wise choice of many alternatives”
William A. Foster
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
Metadata – Repository
• Quality of Metadata–Mainly manual annotation
• Errors are 100% human generated!–Many cases of resources with:
• All Mandatory elements filled• Half of the Recommended• Few or none of the optional
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
Our solution
• Random manual sampling of resources–Checked the metadata – Identified mistakes –Asked partners to correct these and all
similar cases
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
Our solution
• Set up a Metadata Quality Review Mechanism–Created a Metadata Review Grid assessing:
• Completeness, Accuracy, Appropriateness, Correctness, etc
–Assigned 120 resources to 24 reviewers • They assigned other partners’ resources only
–Collected feedback and followed up with comments, corrections
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
Challenges
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
challenges
• hidden tasks associated to multilingualism of the tools
• additional back-end services required• links change over time automatic link
checker needed• support of peer-review quality
mechanism for the resources
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
challenges• High quality metadata support sufficient
searching• Lacking metadata fields make resources
invisible
• High quality metadata require annotation effort from the experts• How do we get the experts to spend the extra
time?
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TERENA TF Media Meeting 18-19 March, 2010, Athens, Greece
Thank you!