A Service Providing Awareness of Learning Object Evolutions in a Distributed Environment - 2008...

transcript

A Service Providing Awareness of Learning Object Evolutions in a

Distributed Environment

Olivier Catteau, Philippe Vidal, Julien BroisinInstitut de Recherche en Informatique de

Toulouse{catteau, vidal, broisin}@irit.fr

Author

LearningObject

Repository

LearningManagement

System

Context

Various systems (LOR and LMS)

Learning Objects indexed into LOR

Learning Objects used by teachers and learners within LMS

Author

LearningObject

Repository

LearningManagement

System

Context

Author

LearningObject

Repository

LearningManagement

System

Context

Author

LearningObject

Repository

LearningManagement

System

Context

Teacher

Learner

Author

LearningObject

Repository

LearningManagement

System

Context

LO release

Teacher

Learner

Author

LearningObject

Repository

LearningManagement

System

Context

LO release

Teacher

Learner

How be teachers aware of LO evolutions?!?

How to know what changes have been made?!?

How to (decide to) converge?!?

Outline Identifying Learning Object

Evolutions Storing Learning Object Evolutions Managing divergences Implementation Conclusion and perspectives

import

(a) first integration

LO A evolutionswithin the LOR

LO A integrationswithin the LMS

converge

(b) re-authoring (c) release (d) convergence

foo foo

Simple LO release

divergence

Succession of learning object evolutions New release implies conflicts

import

(b) re-authoring (c) release (d) convergence

converge

competitivebranch

foo foo

Competitive LO release / Format Change

divergence

Competitive evolutions of the same learning object Various approaches to reach the same pedagogical objectives

Format changes

import

(b) release (c) convergence

importLO B evolutionswithin the LOR

LO B integrationswithin the LMS

convergebar bar

isrequired

byrequires

isrequired

byrequires

LO dependencies

divergence

Relationships between learning objects B requires A to be understood New releases: Bk and Ak Deploying Bk implies a pedagogical conflict

Information to store Qualified relationships

isBasedOn/isBasisFor hasVersion/isVersionOf

Publication date Most recent release

Status of the evolution State of the release

Changes that have been made7

Outline

Identifying Learning Object Evolutions Storing Learning Object Evolutions Managing divergences Implementation Conclusion and perspectives

3. Meta-metadata

3.2 Contribute

3.2.1 Role

3.2.2 Entity

3.2.3 Date

…3.2.4 Changes

2. Life Cycle

2.1 Version

2.2 Status

2.3 Contribute

2.3.1 Role

2.3.2 Entity

2.3.3 Date2.4 Expiry Date

2.3.4 Changes2.5 Modifications Severity

7. Relation

7.2.1.2 Entry

7.2.1.1 Catalog

7.2.1 Identifier

7.2 Resource

7.1 Kind

Storage of Divergences Information

Status of the new release

Relation(s) with other(s) learning object(s)

Existing LOM standard

3. Meta-metadata

3.2 Contribute

3.2.1 Role

3.2.2 Entity

3.2.3 Date

…3.2.4 Changes

2. Life Cycle

2.1 Version

2.2 Status

2.3 Contribute

2.3.1 Role

2.3.2 Entity

7. Relation

7.2.1.2 Entry

7.2.1.1 Catalog

7.2.1 Identifier

7.2 Resource

7.1 Kind

Who has made changes on LO

When changes have been made

3. Meta-metadata

3.2 Contribute

3.2.1 Role

3.2.2 Entity

3.2.3 Date

…3.2.4 Changes

2. Life Cycle

2.1 Version

2.2 Status

2.3 Contribute

2.3.1 Role

2.3.2 Entity

7. Relation

7.2.1.2 Entry

7.2.1.1 Catalog

7.2.1 Identifier

7.2 Resource

7.1 Kind

Who has made changes on LO description

When changes have been made

3. Meta-metadata

3.2 Contribute

3.2.1 Role

3.2.2 Entity

3.2.3 Date

…3.2.4 Changes

2. Life Cycle

2.1 Version

2.2 Status

2.3 Contribute

2.3.1 Role

2.3.2 Entity

7. Relation

7.2.1.2 Entry

7.2.1.1 Catalog

7.2.1 Identifier

7.2 Resource

7.1 Kind

What changes were made and why they were made New descriptor

Extended LOM standard

3. Meta-metadata

3.2 Contribute

3.2.1 Role

3.2.2 Entity

3.2.3 Date

…3.2.4 Changes

2. Life Cycle

2.1 Version

2.2 Status

2.3 Contribute

2.3.1 Role

2.3.2 Entity

7. Relation

7.2.1.2 Entry

7.2.1.1 Catalog

7.2.1 Identifier

7.2 Resource

7.1 Kind

Rate about modifications severity New descriptor Value space

Low Medium High

Extended LOM standard

Outline Identifying Learning Object Evolutions Storing Learning Object Evolutions Managing divergences Implementation Conclusion and perspectives

Processing: the LOV Design

LMS 1 LMS 2

Subject Matter Expert

Editing Teacher

LOR 1 LOR 2

LOR WEB SERVICES

Storage of Learning Objects& Metadata

Pedagogical Interfaces

Author

Specific API 1Virtualization Layer

Specific API 2

Search IndexationImportation Generation

LMS 1 LMS 2

Editing Teacher

LOR 1 LOR 2

LOR WEB SERVICES

Author

Specific API 2

LMS 1 LMS 2

EvolutionsConvergence

Editing Teacher

LOR 1 LOR 2

LOR WEB SERVICES

Author

Specific API 2

LMS 1 LMS 2

Editing Teacher

LOR 1 LOR 2

LOR WEB SERVICES

• Visualization of divergences• Notifications of divergences• Convergence

Author

Visualizing: the 3D relationships representation

Treemap construction

Course C1

Folder F1

LO B LO D

Folder F2

LO E LO G LO H

Folder F4

Course C2

LO I LO J LO K

Category Ca1

Treemap

Folder F3

(a) (b)

Visualizing: State Treemap

Up to date Re-authoring in progress

Dependency divergence Need update

No longer valid18

Notifying: asynchronous tools Email alerts

Teachers Teachers and pedagogical managers ...

RSS feeds LO included in a specific learning design LO deployed by a specific teacher All LO deployed on the LMS ...

Converging Manual convergence

LO release selection on 3D representation

Automatic / scheduled convergence When modifications severity is low No competitive re-authoring No format modification

Benefits Teachers keep awareness without continuously monitoring LOR content

Convergence processes are facilitated, even automated

Pedagogical conflicts avoided Up-to-date content

Outline

Implementation

ARIADNE WEB SERVICES

SOAP/HTTP

Specific API

SOAP/HTTP

International EMIAGE Initiated by a French numeric campus

Delivers Master of Computer Science to foreign students

Divergence example

Outline

Conclusion Awareness about LO divergences in the context

of LO integration process Visualization techniques general picture of the

situation Notifications systems teacher’s reactivity Up-to-date course content

Modifications applied to LOM schema should be adopted by consensus

Perspectives How the divergence has evolved?

Playback & undo functionalities Awareness mechanisms for steering committee members All LMS of a digital campus

Awareness techniques applied during production process

Thanks for your attention!!

http://www.irit.fr/SIERAhttp://www.ariadne-eu.org

A Service Providing Awareness of Learning Object Evolutions in a Distributed Environment - 2008...

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