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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

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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 portal

LRE Portal


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)


A metadata problem

A Metadata Problem


Lrev3 0 limitations lom

LREv3.0 Limitations (LOM)


Lrev4 0 ilox lom

LREv4.0 (ILOX + LOM)


Expression version

Expression (version)


Description

Description


Vocabulary type

Vocabulary Type


Expression description facets

Expression Description Facets

VBE Vocabulary Identifier: LRE.expressionDescriptionFacetValues


Identifier type

Identifier Type


Manifestation format

Manifestation (format)


Item copy

Item (copy)


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”


Identifiers

Identifiers


What to identify

What to Identify?


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


Metadata travels

Metadata Travels


Metadata travels1

Metadata Travels


25 content providers

>25 Content Providers


Lre identity service

LRE Identity Service


Trusted identifier

Trusted Identifier


Trusted identifier1

Trusted Identifier


Trusted identifier2

Trusted Identifier


Trusted identifier3

Trusted Identifier


Trusted identifier4

Trusted Identifier


Trusted identifier5

Trusted Identifier


Trusted identifier6

Trusted Identifier


Trusted identifier7

Trusted Identifier


Trusted identifier8

Trusted Identifier


Trusted identifier9

Trusted 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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