This presentation is about how Topic Maps help to improve e-Learning applications.

1. W E B V E V E R I E T
Modelling QTI
in Topic Maps
“Get your facts first, then you can distort them as you please.”
Mark Twain
Reidar Bratsberg <reidar@ravn.no>
Jan Schreiber <jans@ravn.no>, Terje Syversen <terje@ravn.no>
Ravn Webveveriet AS, TMRA 2010, Leipzig

2. Overview
• Our use case
• QTI and Topic Maps
• Embedded topics
• Other uses
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3. Cappelen Damm
• Largest educational publisher in Norway
• Our largest customer
• > 300 e-learning sites/electronic school
books
• All published data in topic maps
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4. One Learning Resource
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5. Browser Flash player ...
Web server
MathML conversion
Templates, presentation code
API for learning Image conversion
objects (REST)
Web publishing framework ...other services...
Import/export
Topic Maps API Grep, RSS, XTM, LTM
TMAPI
Ravn Topic Maps engine
Postgresql Binary storage
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6. Learning Objects in In-browser
SCORM, QTI viewer Flash
IMS-Content Package (Javascript, HTML)
PDF,
QTI HTML EPUB,
etc...
CMS, Topic Maps Engine
Students' User
Editorial Content assessment I18N Interface
results/progress Definition
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7. QTI
• IMS Global Learning Consortium
• IMS Question & Test Interoperability Specification
• Share assessment content (+ results) between CMS,
LMS, repositories and users
• Data model + XML Binding
• Common Cartridge: QTI v1.2.1
(with Content Packaging 1.2, LOM 1.0)
• Latest version: 2.0 and (sort of) 2.1
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8. QTI Features
• Questions, assessments, results
• Modular, supports nested structures
• Outcome processing
• Control time limits, feedback,
pre-conditions etc
• Can include XHTML, MathML
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9. QTI standard woes
• January 2005: v.2.0 Final release
• 2.0: Changes definition of items only
• 2.1: Changes the whole interaction model
• Large changes from version 1.2
• Version 2.1 as draft only
• Withdrawn and "depublished" early 2009
• Republished after lots of complaints
• Convert to some future standard may be non-trivial
(i.e. requires manual work)
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10. How to deal with this?
• Acknowledge the value of content
• Represent our content richer than QTI in our topic
map
• We must be able to represent the data model
completely (complexity)
• Data/content for the long term
• Generate QTI in whatever version needed in the future
• Support other standards as well
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11. QTI and Topic Maps
• Structure easily represented in Topic Maps
• Use case: Modelling "filling gaps" question type
• Gaps to be filled in by student
• Gaps can have a sound file attached
• QTI: Assessment Item: textEntryInteraction
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16. Embedded Topics
• Need to refer to topics within occurrences
• Need to make statements about these
(i.e. associate sounds with gaps in text)
• (Otherwise a simple markup would do)
• Must be able to represent in XML for usage in
authoring tools (mainly XHTML editors)
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17. The occurrence
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18. topic type:
fill-the-gap topic type:
gap
instance of
instance of
"Formen Sie folgende Sätze um"
scope
"mitbringt"
uid:foo
occurrence
type:
instance of gap-text
1. Maria bringt das Buch mit.
Ich weiß, dass Maria das
Buch mitbringt.
uid:foo
2. Peter holt seine Freundin
vom Bahnhof ab.
Ich weiß, dass Peter seine
Freundin vom Bahnhof
abholt.
uid:bar
3. (...)
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21. Authoring tools
• Generic capability of editing any number of embedded
topics
• Interface fetched via ajax from the server, depends on
type and context
• User interface wants to be a topic map? UI stored in a
seperate topic map
• Plugin for TinyMCE editor for generic topic creation/
editing/deletion
• The server maintains the necessary associations, topics,
occurrences
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24. topic type:
fill-the-gap topic type:
gap
instance of
instance of
"Formen Sie folgende Sätze um"
scope
"mitbringt"
uid:foo
occurrence
type:
instance of gap-text
1. Maria bringt das Buch mit.
Ich weiß, dass Maria das
Buch mitbringt.
uid:foo
2. Peter holt seine Freundin Sound:
vom Bahnhof ab. spoken
Ich weiß, dass Peter seine
Freundin vom Bahnhof "mitbringt"
abholt.
uid:bar
3. (...)
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25. topic type:
fill-the-gap topic type:
gap
instance of
instance of
"Formen Sie folgende Sätze um"
scope
"mitbringt"
uid:foo
occurrence
type: assc type:
instance of gap-text answer-
illustration
1. Maria bringt das Buch mit.
Ich weiß, dass Maria das
Buch mitbringt.
uid:foo
2. Peter holt seine Freundin Sound:
vom Bahnhof ab. spoken
Ich weiß, dass Peter seine
Freundin vom Bahnhof "mitbringt"
abholt.
uid:bar
3. (...)
Image
"herbeibringt" assc type:
alternative-
answer
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26. Other uses for this
technique
• Inserting images in content
• Hyperlinks in the text:
Internal associations and URIs
• Printer friendly articles with links on the side
• Embedding videos etc
• Example: Vocabulary in Deutch Drei Digital
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31. To conclude...
• It solved our problem
• Used many places in our production code
• Flexible and easy for developers
• Occurrences with many embedded topics
(hundreds) => performance tuning
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32. Questions?
Thank you.
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