A Late Modelling Approach for the Definition of Computer-Supported Learning Process

Telmo ZarraonandiaLaboratorio DEI. Dpto. de InformáticaU. Carlos III de Madrid

A Late Modelling Approach for the Definition of Computer-Supported

Learning Process

Telmo Zarraonandia, Camino Fernández, Juan Manuel Dodero

[email protected]

Universidad Carlos III de MadridDepartamento de InformáticaEscuela Politécnica Superior

Av. Universidad 30 Leganés, Madrid, España 28911


• Objectives• Late Modelling Lifecycle• Adaptation Mechanism

• LD Player Architecture• Validation Mechanism

• Notations• Conclusions and Future Work




Overview


Objectives

Bring together the way teachers work in real life and the way they work in a computer supported environment Late modelling

Focused on IMS Learning Design

Supervised process

Increase:Teacher’s degree of freedom when applying a Learning Design process

Teacher’s control over the process

Facilitate the implementation of the late modelling lifecycle








Overview


Late Modelling Lifecycle


Late Modelling Phases

Monitor ExecutionObserve learner’s reactions, interests, resources availability, context....

Adaptation IntroductionModify process execution “on the fly”

Evaluation of AdaptationsProcess EvaluationAdaptation Integration

Select adaptations which mean an improvementMake changes permanent


IMS Learning Desing: What do we need?

A notation to specify the monitorizations

A notation to specify the adaptations

A notation to specify the learning objectives evaluations

Create a evaluation profile for the UoL

A mechanism to modify the process “on the fly” Introduce the adaptations...

To observe process evolution at any time....








Overview


Roles: Learners: Student Role Staff:Environments:Activities: Learner Activities Resource

Activity 1 <= What_Is_Internet.pdfActivity 2 <= Web_BrowsersActivity 3 <= Search_EnginesActivity 4 <= Mail_ProgramsActivity 5 <= Messenger_Programs

Support Activities Activity Structure

Internet Lessons (Structure = Sequence)1. Activity 12. Activity 23. Activity 34. Activity 4.........

Method

..............

....Environments:Activities: Learner Activities Resource

Activity 1 <= What_Is_Internet.pdf

Activity 2 <= Web_Browsers

Activity 3 <= Search_Engines

Activity 4 <= Mail_Programs

Activity 5 <= Messenger_Programs

Support Activities

Superimpose IMS LD fragments on top of an existing manifest definition

Adaptation Mechanism (I)

SearchEnginesTheory.pdf

Mail_Programs_Theory.pdf

Internet_Basics.html


Adaptation Mechanism (II)


Adaptation Mechanism (III)

An architecture for extending existing players with runtime adaptation capabilities:

Non intrusive

Flexible

Validate the definition of the modified manifest








Overview


LD Player Implementation: Visitor Pattern


LD Player Implementation:Visitor Pattern + Aspects

We need an “accept” operation on the Learning Design elements

Aspect Oriented Programming approach:ASPECT : Operations (adaptation, monitorization..)

POINTCUT : Condition of application of the operation

ASPECT and POINTCUTS defined separately from the rest of the components








Overview


Validation Mechanism (I)

Guarantee UoL definition remains compliant with the IMS LD specification after the adaptation

IMS LD Ontology [University of Santiago de Compostela]:

Taxonomy of concepts

Restrictions represented as axioms declared in First Order Logic

Implementation: F-logic


Validation Mechanism (II): Process

3. Flora-2 reasoner invoked

Axiom restrictions checked

2. Manifest translation: F-logic description of the LD obtained

1. Adaptation is introduced Manifest definition is changed








Overview


Notation for the Adaptations Description

Three types of files :

Adaptation command

Adaptation manifests

Resource files


Notation for the Monitorizations Definition

Peeks can be

concatenated

Refer to different

UoL instances

Used as conditions

of the adaptations

Base for the evaluations


Notation for the Evaluations Definition








Overview


Conclusions and Future Work

Alternative / Complement IMS Lerning Design adaptation and monitorization mechanisms:

Introduction “on the fly”

Ontology Level B and CTools:

Done:CopperCore Engine Extension for AdaptationOff-line validation

Next:Tools for the adaptation, monitorization and evaluation definitionAssemble everything...


Thanks for you attention!!

Documents

A Late Modelling Approach for the Definition of Computer-Supported Learning Process