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LRE Metadata Application Profile v4.0. David Massart, EUN Budapest, Hungary – Nov. 2, 2009. Outline. LRE Overview LRE Limitations LRE Metadata Application Profile v4.0 Managing and Using Vocabularies Identifying Resources ASPECT Service Center . LRE Metadata Application Profile.

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Lre metadata application profile v4 0

LRE Metadata Application Profile v4.0

David Massart, EUN

Budapest, Hungary – Nov. 2, 2009


Outline
Outline

  • LRE Overview

  • LRE Limitations

  • LRE Metadata Application Profile v4.0

  • Managing and Using Vocabularies

  • Identifying Resources

  • ASPECT Service Center


Lre metadata application profile
LRE Metadata Application Profile

  • http://fire.eun.org/LREMAPv4p0.pdf



Lre vision

It isNOT a centralised portal…

But a frameworkthat supports semantic and technical interoperability of content repositories

LRE Vision


Learning resource exchange
Learning Resource Exchange

An infrastructure for

  • Federating applications that provide learning resources (e.g.,  learning resource repositories, authoring tools)

  • Offering a seamless access to these resources to educational applications that consume them (e.g., educational portals, VLEs, IWBs)








Expression description facets
Expression Description Facets

VBE Vocabulary Identifier: LRE.expressionDescriptionFacetValues





Item location
Item Location

  • URI (resolvable location: e.g., a URL or a persistent identifier for a copy of the LO - handle, DOI, PURL)

  • Description: Metadata (optional)


Item sub elements
Item Sub-elements

  • “location.uri” should be resolvable

    • Either it resolves to the location of the object (no location.metadata permitted)

    • Or it resolves to the location of a service that gives access to the object (mandatory location.metadata to describe the access control service)

  • Non-resolvable identifier should be put in item.identifier

  • Other descriptions should be put in item.description


Describing expressions with ieee lom
Describing Expressions with IEEE LOM

  • No mandatory elements

  • Mandatory way to use elements (controlled vocabularies)

  • Core elements

  • Recommended elements

  • Optional elements

  • Unused elements


Core elements
Core Elements

  • General.Language – LOM 1.3

  • Educational.Learning Resource Type – LOM 5.2

  • Rights – LOM 6

  • CORE = Optional but necessary


Recommended elements
Recommended Elements

  • General.Title - LOM 1.2

  • General.Description - LOM 1.4

  • General.Keyword - LOM 1.5

  • Life Cycle.Contribute – LOM 2.3

  • Meta-Metadata.Language - LOM 3.4

  • Educational.Intended End User Role - LOM 5.5

  • Educational.Learning Context - LOM 5.6

  • Educational.Typical Age Range – LOM 5.7

  • Classification – LOM 9

  • Recommended = Optional but good to have


Unused elements
Unused Elements

  • Technical – LOM 4

  • Classification.Keyword – LOM 9.4

  • Unused = Should not be used (conflict with other elements)


Optional elements
Optional Elements

  • All the elements that do not belongs to the ‘core’, ‘recommended’ and ‘unused’ categories are optional

  • Might be safely ignored but

  • When used, some usage rules might have to be followed


Lre controlled vocabularies
LRE Controlled Vocabularies

  • Key to deal with

    • Multilingualism

    • Processable semantics

  • Managed in a Vocabulary Bank for Education (VBE) where

    • Each vocabulary and vocabulary term is identified

    • Term translations are kept

    • Crosswalks are stored


Http aspect vocman com
http://aspect.vocman.com/


Rights cost lom 6 1
Rights.Cost – LOM 6.1

http://aspect.vocman.com/vbe/user/download/LOM/costValues.vdex

http://aspect.vocman.com/vbe/user/download/LOM/costValues.zthes


Encoding vocabulary term
Encoding Vocabulary Term

  • Authorized values

    • Source: <VBE Vocabulary Identifier>

    • Value: <VBE Vocabulary Term Identifier>

  • Example:

    • Source = “costValues”

    • Value = “yes”




Expression identifier
Expression Identifier

  • Content providers are strongly encouraged

    • To identify at least LO expressions

    • To consistently use identifiers

  • It is possible to use more than one identifier
















Handle system
Handle System

  • “Persistent” identifier for LO expression

  • Stamp (quality label) trusted between LRE members

  • Can be resolved

    • Content providers

    • LRE version of the metadata

    • Signature verification


Service center
Service Center

  • LOR Registry

  • Vocabulary Bank

  • App Profile Registry

  • Automatic metadata language translation

  • Automatic metadata format transformation

  • Automatic content format transcoding

  • Compliance testing

  • Identifier service – handle

  • Access to known interoperability issues


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