Specification of Adaptation Strategy by FOSP Method

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Specification of Adaptation Strategy by FOSP
Method

• Milos Kravcik
• Fraunhofer-Gesellschaft
• Institute for Applied Information Technology FIT
• Sankt Augustin, Germany
• kravcik_at_fit.fraunhofer.de

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Introduction

• Problem Complexity and efficiency of the
  authoring process
• Aim Simple method for collaborative authoring of
  adaptive (educational) hypermedia
• Earlier work Electronic documents reusability
  separation of various aspects (structure,
  layout) Formal hypermedia models vs. implemented
  systems
• WINDS experience Teachers can specify
  declarative knowledge (e.g. pedagogical
  attributes) We cannot expect they will specify
  procedural knowledge (e.g. adaptation rules)
• Proposed approach Separate partial results
  produced by different authors
  reusability Adaptation strategy specification
  content object preferences for different
  contexts Adaptation process pattern Filter,
  Order, Select, Present

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Hypermedia Models and Specifications

• Formal Models
• Dexter Hypertext Reference Model (1990)Adaptive
  Hypermedia Application Model (1999)3 Layers of
  Adaptation Granularity (2003)Objective
  Reusability at various levels
• Specifications
• Extensible Markup Language (XML)Cascading Style
  Sheets (CSS)Extensible Style Language (XSL)

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Adaptive Hypermedia Authoring Tools

• Issue different layers in formal models are not
  clearly separated in real systems
• Objective simplify authoring by reusability at
  different levels and interoperability between
  different platforms
• Reusability learning objects adaptation
  techniques (pedagogical approaches)
• Authoring tools vary in separating individual
  layers according to models Markup language
  level (AHA!) Teaching tasks composition rules
  (TANGOW) Form based user interface
  (NetCoach) Template based user interface (ALE)
• Adaptation specification missing
  reusability Markup language in content
  (AHA!) Encoding in learning environment (ALE)

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Stakeholders
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System Architecture
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FOSP Method
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Conclusion

• Key results Method to specify adaptation
  strategies for adaptive hypermedia
  applications Simplification of complex authoring
  process for teachers Collaborative authoring
  sharing of partial results Compliancy with
  established standards and recommendations
  (AHAM) Separating content, declarative and
  procedural knowledge
• Future task Elaboration of the
  method Implementation in real systems
• Thank you. Questions?