Adaptive Information Retrieval

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Adaptive Information Retrieval Authoring of
Adaptive Hypermedia
Databases Hypermedia Group, Department of
Informatics

• Lora Aroyo

Dynamo day July 4th, 2002
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Index

• Adaptive Information Retrieval
• Data Structures
• IR Techniques
• User Modeling
• Authoring of WIS
• Information processing
• Information perception
• Summary

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Information Retrieval

• The process of applying algorithms over
  structured data in order to satisfy a given
  information query
• Efficiency with respect to
• algorithms
• query building
• data structuring

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Adaptive Information Retrieval

• The process of applying algorithms over
  structured data in order to satisfy a given
  information query with respect to the user model
• Efficiency with respect to
• algorithms
• query building
• data structuring
• user modeling

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Reference Model for AIR

• how to organize
• what structures
• what data

Data

• what attributes
• what structure
• how to build

UM
Query
Algorithm

• optimal
• what UM attributes

• how to build
• what UM attributes

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AIMS Global Information Model
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AIMS search environment
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AIMS authoring environment
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Index

• Adaptive Information Retrieval
• Data Structures
• IR Techniques
• User Modeling
• Authoring of WIS
• Information processing
• Information perception
• Summary

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Authoring of Adaptive WIS

• Authoring portal architecture
• Authoring reference model
• Authoring support tools

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Authoring support

• Ontological layers
• Author Assisting layer
• Operation layer
• Authoring task ontology

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Ontological Layers

• Conceptual layer
• atomic concepts sub-layer
• composite concepts sub-layer (sets of concepts
  hierarchical structure)
• Lessons layer
• hierarchy of chapters, sub-chapters directed
  graph
• way order in which concepts are taught
• Student adaptation presentation layer
• (UM-based) adaptation engine sub-layer
  conditions set
• presentation means adaptation sub-layer layout

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Ontological layers (2)
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Author assisting operation layers
Y
X
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X-axis

• Assisting layer
• based on domain ontology map
• courseware authoring help hints e.g.
• editing course/domain structure, etc.
• linking documents/course items to ontology, etc.
• Operation layer
• for ontology data modelling (info layer
  operation)
• helps create alternative goal-oriented course
  structures
• handles operations for info manipulation,
  checking consistency
• 3 modules course -, domain -, library engine
• consistency check co-operation support

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(No Transcript)
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Summary of the research directions

• Courseware authoring support
• authoring task ontology
• authoring reference model for adaptive WIS
• integration in AHAAHAM framework

• Adaptation for web transaction interactions
• dynamic UM
• dynamic DM
• adaptation for browsing, transactions
  searching
• integration in AHAAHAM framework

Dynamic open
Static closed