exposing educational metadata as linked data: the case of ariadne, enayat rajabi
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Exposing Educational Metadata as Linked Data: The Case of ARIADNE
Exposing Educational Metadata as Linked Data: The Case of ARIADNEEnayat RajabiUniversity of Alcala, Spain
11th EdReNe Conference6th May, 2014 Greece
Exposing educational data as Linked Data
Exposing educational data as Linked Data
• Sharing educational data on the Web• Reusing learning resources by other resources• Enriching learning materials by interlinking them to
Web of Data• Querying the educational repositories• …
ARIADNE repositoryARIADNE repository
• A learning repository with more than 830,000 educational data available at http://ariadne.cs.kuleuven.be/
• Most of ARIADNE learning metadata is based on IEEE
LOM standard
• Learning keywords: more than 5.5 million string values
• Most of them are in English, Dutch, Spanish, German,…
• Around 84,000 coverage values
• Around 1,035,000 title values
• …
How do we expose IEEE LOM?How do we expose IEEE LOM?
• Having experiences on exposing IEEE LOM as Linked Data in Organic.Edunet, ODS, …
• Realizing a recommendation on exposing IEEE LOM as Linked Data (ODS Recommendation Draft 19 June 2013)
• Having experiences on interlinking LOM records over several repositories
ARIADNE LD exposure stepsARIADNE LD exposure steps
1. Harvesting
• Harvesting ARIADNE metadata by ARIADNE harvester
• Around 826,000 metadata were collected
2. Converting
• Converting all harvested XML files into a
relational database by a Java program
• Having the possibility of analyzing the records by using an RDB
ARIADNE LD exposure stepsARIADNE LD exposure steps
3. Making RDF dump
• Mapping RDB to RDF by using a mapping service (e.g., D2RQ service) and ODS LOM LD exposure
recommendation
• Exposing title, keyword, location, and description
• Creating a RDF dump by D2RQ (9.3 million triple)
• SPARQL Endpoint available?
4. Interlinking to DBpedia, and wordnet
5. Importing to a triple store and making a UI
• Importing the RDF dump into Jena Fuseki
ArchitectureArchitecture
