maurice hendrix cs411 seminar 22 10 2009 maurice@dcs w arwick ac uk l.
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  1. Maurice Hendrix CS411 seminar, 22/10/2009 maurice@dcs.w/arwick.ac.uk Adaptation languages for learning: the CAM meta-model

  2. Outline Why personalisation (in educational systems)? Adaptive Hypermedia (AH) Course creation (authoring) by non-technical users Proposed solution Try it for yourself

  3. Why personalisation (in educational systems)? • Students benefit from personalised attention • Teachers are unable to provide this for every student • Systems that can offer this could improve the learning outcomes

  4. Adaptive Hypermedia • Hypermedia • Set of nodes and links, e.g. web page • Adaptive • What to adapt : presentation, navigation • What to adapt to : user (e.g. preference, knowledge), environment (e.g. device, connection) • Can deliver personalised attention • Has potential to improve learning outcome

  5. Course creation (authoring) by non-technical users • AH course creation more complex than normal web-sites; involves writing adaptation strategy • Trade off between expressivity and ease of use by teachers crucial for success of AH • Re-usability often limited

  6. Solutions up to now • System specific (XML) formats • Graph based e.g. AHA! Graph author, without separation into layers (conceptual domain, adaptation strategy, course) • Layers based e.g. MOT with LAG. But based on tree structure and separate strategy ‘program’

  7. Proposed solution:Conceptual Adaptation Model • Graph based (hypermedia are nodes and links) • Concept Adaptation Model • Domain model • Concept Relation Types • User Model

  8. Implications for Adaptation Languages • Visual language for DM, (CRT) and CAM • XML language for internal repr. DM, CRT, CAM

  9. Visual language DM visual language

  10. Visual language CAM visual language

  11. XML language • Common header, with name, description, creation date and date last updated • DM: IMS-VDEX based • CRT: UM variables in use, constraints on combining CRTs, adaptive behaviour in adaptation language e.g. LAG • CAM: contains DM and CRT and instantiation or CRTs with Concepts from DM

  12. CAM based authoring tool

  13. Try it for yourself • Grapple Authoring tool (GAT) available at: • http://prolearn.dcs.warwick.ac.uk/GAT/ • Your honest (anonymous) opinion is appreciated, let us know at • http://tinyurl.com/yduw4ze