Alberto Abián AgLT 2009 (Budapest - November 2009) Organic.Edunet Case Study: Harvesting Federated Organic AgLRs in a Portal

Alberto AbiánAlberto Abián

AgLT 2009AgLT 2009

(Budapest - November 2009)(Budapest - November 2009)

Organic.Edunet Case Study: Organic.Edunet Case Study: Harvesting Federated Organic Harvesting Federated Organic

AgLRs in a PortalAgLRs in a Portal

22AgLT 2009 (Budapest)

Overall guidelinesOverall guidelines

• IntroductionIntroduction• Organic.Edunet architectureOrganic.Edunet architecture

– Metadata SCAM RepositoryMetadata SCAM Repository– Metadata harvesting mechanismMetadata harvesting mechanism– Semantic moduleSemantic module– Web portalWeb portal

• ConclusionsConclusions


IntroductionIntroduction

• Organic.Edunet aims to facilitate access, Organic.Edunet aims to facilitate access, usage and exploitation of digital educational usage and exploitation of digital educational content related to Organic Agriculture (OA) content related to Organic Agriculture (OA) and Agroecology (AE). and Agroecology (AE).

• It will deploy a multilingual online federation of It will deploy a multilingual online federation of learning repositories, populated with quality learning repositories, populated with quality content from various content producers. content from various content producers.

• The Organic.Edunet Web portal will facilitate The Organic.Edunet Web portal will facilitate end-users’ search, retrieval, access and use of end-users’ search, retrieval, access and use of the content in a multilingual environment.the content in a multilingual environment.


List of participantsList of participants• The consortium consists of 15 contractor The consortium consists of 15 contractor

organizations from 10 countries: Greece, Spain, organizations from 10 countries: Greece, Spain, Sweden, Norway, Austria, Estonia, United Kingdom, Sweden, Norway, Austria, Estonia, United Kingdom, Hungary, Romania, Germany.Hungary, Romania, Germany.

• There are four kind of partners:There are four kind of partners:- Content providerContent provider- Technological partnerTechnological partner- Quality assurance Quality assurance - Expert in educational methods and usersExpert in educational methods and users

• UAH together with KTH and GRNET are in UAH together with KTH and GRNET are in charge of the technical development.charge of the technical development.


Organic.Edunet architectureOrganic.Edunet architecture


Content ProviderContent Provider

CONTENT PROVIDERCONTENT PROVIDER

(Estonian University (Estonian University

of Life Sciences)of Life Sciences)

LEARNING LEARNING

OBJECTOBJECT

METADATAMETADATA

ANNOTATION TOOLANNOTATION TOOL

SCAMSCAM

REPOSITORYREPOSITORY

11

CONTENT PROVIDERCONTENT PROVIDER

((Intute)Intute)

LEARNING LEARNING

OBJECTOBJECT

METADATAMETADATA

ANNOTATION TOOLANNOTATION TOOL

SCAMSCAM


22

<dc:title>European <dc:title>European Fertilizer Manufacturers Fertilizer Manufacturers Assoc. Assoc. (EFMA)</dc:title>(EFMA)</dc:title>

<dc:desc>...</dc:desc><dc:desc>...</dc:desc>

<?xml … ?><lom…><?xml … ?><lom…>

<general><title><general><title>

European Fertilizer European Fertilizer Manufacturers AssocManufacturers Assoc

</title></general></lom></title></general></lom>


ONTOLOGIESONTOLOGIES

Harvesting mechanismHarvesting mechanism

SCAMSCAM


SCAMSCAM


SCAMSCAM


SCAMSCAM


Ont-spaceOnt-space

synchronizationsynchronization mechanismmechanism

OAI-PMHOAI-PMH

XML Files (IEEE XML Files (IEEE LOM)LOM)


Harvesting – IDENTIFYHarvesting – IDENTIFY

SCAMSCAM


HARVESTERHARVESTER

Identify requestIdentify request

Identify responseIdentify response

http://oe.confolio.org/harvesting/oai?http://oe.confolio.org/harvesting/oai?verb=Identifyverb=Identify

<OAI-PMH><OAI-PMH>

<responseDate>2009-11-03T07:13:35Z</responseDate><responseDate>2009-11-03T07:13:35Z</responseDate>

<request verb="Identify">http://oe.confolio.org:80/harvesting/oai</request><request verb="Identify">http://oe.confolio.org:80/harvesting/oai</request>

<Identify><Identify>

<repositoryName>SCAM Repository</repositoryName><repositoryName>SCAM Repository</repositoryName>

<baseURL>http://oe.confolio.org:80/harvesting/oai</baseURL><baseURL>http://oe.confolio.org:80/harvesting/oai</baseURL>

<protocolVersion>2.0</protocolVersion><protocolVersion>2.0</protocolVersion>

<adminEmail>mailto:[email protected]</adminEmail><adminEmail>mailto:[email protected]</adminEmail>

<earliestDatestamp>2000-01-01T00:00:00Z</earliestDatestamp><earliestDatestamp>2000-01-01T00:00:00Z</earliestDatestamp>

<deletedRecord>no</deletedRecord><deletedRecord>no</deletedRecord>

<granularity>YYYY-MM-DDThh:mm:ssZ</granularity><granularity>YYYY-MM-DDThh:mm:ssZ</granularity>

<compression>gzip</compression><compression>gzip</compression>

<compression>deflate</compression><compression>deflate</compression>

</Identify></Identify>

</OAI-PMH></OAI-PMH>


Harvesting – LIST SETSHarvesting – LIST SETS

SCAMSCAM


HARVESTERHARVESTER

ListSet requestListSet request

ListSet responseListSet response

http://oe.confolio.org/harvesting/oai?http://oe.confolio.org/harvesting/oai?verb=ListSetsverb=ListSets

<OAI-PMH><OAI-PMH>

<responseDate>2009-11-03T12:35:54Z</responseDate><responseDate>2009-11-03T12:35:54Z</responseDate>

<request verb="ListSets"><request verb="ListSets">

http://oe.confolio.org:80/harvesting/oaihttp://oe.confolio.org:80/harvesting/oai

</request></request>

<ListSets><ListSets>

<set><setSpec>http://oe.confolio.org/scam/57</setSpec><set><setSpec>http://oe.confolio.org/scam/57</setSpec>

<setName>MIKSIKE</setName></set><setName>MIKSIKE</setName></set>

<set><setSpec>http://oe.confolio.org/scam/3</setSpec><set><setSpec>http://oe.confolio.org/scam/3</setSpec>

<setName>Nikos Manouselis</setName></set><setName>Nikos Manouselis</setName></set>

......

</ListSets></ListSets>

</OAI-PMH></OAI-PMH>


<oai-pmh><oai-pmh>

<responsedate>2009-11-03T12:44:33Z</responsedate><responsedate>2009-11-03T12:44:33Z</responsedate>

<request metadataPrefix="oai_lom" until="2009-11-03T08:13:35Z" <request metadataPrefix="oai_lom" until="2009-11-03T08:13:35Z" verb="ListIdentifiers" set="http://oe.confolio.org/scam/57" from="2009-10-verb="ListIdentifiers" set="http://oe.confolio.org/scam/57" from="2009-10-09T11:54:45Z">http://oe.confolio.org:80/harvesting/oai</request>09T11:54:45Z">http://oe.confolio.org:80/harvesting/oai</request>

<listidentifiers><listidentifiers>

<header><header>

<identifier>oai:scam:http://oe.confolio.org/scam/57/entry/110</identifier><identifier>oai:scam:http://oe.confolio.org/scam/57/entry/110</identifier>

<datestamp>2009-10-27T17:14:42Z</datestamp><datestamp>2009-10-27T17:14:42Z</datestamp>

<setspec>http://oe.confolio.org/scam/57</setspec><setspec>http://oe.confolio.org/scam/57</setspec>

</header></header>

<header>...</header><header>...</header>

……

</oai-pmh></oai-pmh>

Harvesting – LIST RECORDSHarvesting – LIST RECORDS

SCAMSCAM


HARVESTERHARVESTER

ListRecords requestListRecords request

ListRecords responseListRecords response

http://oe.confolio.org:80/harvesting/oai?verb=ListIdentifiers http://oe.confolio.org:80/harvesting/oai?verb=ListIdentifiers

&from=2009-10-09T11%3A54%3A45Z &from=2009-10-09T11%3A54%3A45Z

&until=2009-11-03T08%3A13%3A35Z &until=2009-11-03T08%3A13%3A35Z

&set=http://oe.confolio.org/scam/57 &set=http://oe.confolio.org/scam/57

&metadataPrefix=oai_lom&metadataPrefix=oai_lom


Harvested files example (I)Harvested files example (I)


Harvested files example (II)Harvested files example (II)


Semantic moduleSemantic module

ONTOLOGIESONTOLOGIES

Ont-spaceOnt-spaceTranslation from Translation from IEEE LOM to OWL IEEE LOM to OWL

and storageand storage

HARVESTED HARVESTED LEARNING LEARNING

RESOURCESRESOURCES


List of ontologiesList of ontologies

• Organic Agriculture and Agroecology Organic Agriculture and Agroecology ontology expressed in OWL.ontology expressed in OWL.

• Learning Resource Type OntologyLearning Resource Type Ontology• Predicates for Learning Resources Predicates for Learning Resources

Ontology.Ontology.• IEEE LOM mapping ontology expressed IEEE LOM mapping ontology expressed

in OWL.in OWL.


Web PortalWeb Portal


ConclusionsConclusions• The content providers use specific tools to annotate The content providers use specific tools to annotate

the Learning Resources to provide additional the Learning Resources to provide additional qualitative information about them.qualitative information about them.

• The resources and their metadata are uploaded The resources and their metadata are uploaded metadata repository (SCAM).metadata repository (SCAM).

• A harvesting mechanism is used to obtain the created A harvesting mechanism is used to obtain the created or modified learning resources’ metadata.or modified learning resources’ metadata.

• Metadata is converted to semantic format (ontology Metadata is converted to semantic format (ontology language) and stored in a CENTRAL repository (Ont-language) and stored in a CENTRAL repository (Ont-space)space)

• The Organic.Edunet Web Portal allows final users to The Organic.Edunet Web Portal allows final users to search, locate, retrieve and access learning resources search, locate, retrieve and access learning resources on OA and AE throughout the whole Organic.Edunet on OA and AE throughout the whole Organic.Edunet federation.federation.


QuestionsQuestions

Project Web: Project Web: http://www.organic-edunet.euhttp://www.organic-edunet.eu Web Portal: http://portal.organic-edunet.eu Web Portal: http://portal.organic-edunet.eu

E-mail: E-mail: [email protected]@uah.es

Documents

Alberto Abián AgLT 2009 (Budapest - November 2009) Organic.Edunet Case Study: Harvesting Federated Organic AgLRs in a Portal