mastering adaptive hypermedia courseware authors: boyan bontchev, dessislava vassileva, slavomir...
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Mastering Adaptive Hypermedia Courseware
Authors: Boyan Bontchev, Dessislava Vassileva, Slavomir Grigorov
ICETA 2008
Content• Introduction • Contemporary e-learning tendencies• A triangular model for AHS
• The learner model• The domain model• The adaptation model• The adaptation engine
• Software architecture of adaptive hypermedia system
• Construction of hypermedia courseware for adaptive delivery
• The authoring tool• The instructor tool• The adaptation engine and learner app.
• Conclusions2ICETA 2008, September 12
Introduction
What is e-learning?… is a catch-all term that
covers a wide range of instructional material that can be delivered on a CD-ROM or
DVD, over a local area network (LAN), or on the
Internet.
… is an umbrella term that describes learning done at a
computer, usually connected to a network,
giving us the opportunity to learn almost anytime,
anywhere.
… is the delivery of a learning, training or education program by
electronic means. E-learning involves the use of a computer or electronic device (e.g. a mobile phone) in some way to provide training, educational or learning material. (Derek Stockley 2003)
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Introduction
Why e-learning?
• Communication and multimedia technologies
• Flexibility - anywhere, anytime• Student’s demand of e-learning
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Contemporary e-learning tendencies
• Growing usage
• Web based applications
• Adaptation to user (Adaptive Hypermedia Systems)
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A triangular model of AHS
Storyboard Rules
Narrative Storyboard
Narrative Metadata
AdaptationEngine
Learning Style
Goals and Preferences
Knowledge & Performance
Content
ContentGroups
ContentMetadata
AdaptationModel
Learner Model
DomainModel
•The learner model
•The domain model
•The adaptation model
•The adaptation engine
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The learner model
• Goals and Preferences
• Learning Style
• Shown knowledge (Performance)
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The domain model
• Granulation of learning materials into Learning objects (LO), (SCORM standard)
• Content metadata (LOM)
• Ontology tree
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The adaptation model
Storyboard graph•Learning nodes (pages)•Possible paths•Control points
Link annotationsExam thresholdsLO parameters WP2
WP1
WP3
CP1 CP2
P1 P5P6
P2
P4P3P7
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The adaptation engine
• Evaluating user preferences (prediction)
• Making decision, which path to chose for the user (content selection)
• Hiding uninteresting content and links
• Using scaled annotations for links
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Construction of hypermedia courseware for adaptive delivery
Instructor (author of the courses)
Author of the LOs
Learning content
LOs representation description
Content delivery
Student
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Software architecture of adaptive hypermedia systemClients
•Author• Instructor•Learner•Administrator
Client specific services
Business API
Adaptation engine
Database
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The authoring tool
• Content – LO (Text, Image, Audio, Video)
• LO Metadata (LOM)• Test questions associated to LO• XML format is supported• Web based application• In use as standalone ARCADE
Platform
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The instructor tool
• Courses• Learning pages – setting LOs• Exam (control points)• Links• RIA Adobe Flex application
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The adaptation engine and learner app.
• Chose work path according to the learners goals and preferences (Content selection)
• Adjust page for delivery (content hiding, link annotation, link hiding) – generate xsl transformation.
• Exam handling
S = 45
S = 35
S = 20
S = 70
S = 45
S = 45
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Conclusions
Authors and instructors are mastering adaptive content
Future improvement:• Scanning user interaction• Artificial intelligence in AE algorithm • Authoring tool - cross-platform
interoperability
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Questions
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Boyan Bontchev:[email protected]
Dessislava Vassileva:
Slavomir Grigorov:
Thank You for attention
ICETA 2008, September 12