Overview of Adaptive Navigation Technologies Michal Tvarožek FIIT STU BA.

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Presentation transcript:

Overview of Adaptive Navigation Technologies Michal Tvarožek FIIT STU BA

Overview of Adaptive Navigation Technologies 2 Presentation outline Navigation? Motivation Sources of adaptation Adaptive hypermedia technologies Adaptive navigation support Summary

Overview of Adaptive Navigation Technologies 3 Navigation? Navigation (colloquially called surfing) : the activity of following links and browsing web pages User needs –Informational (acquire information) –Navigational (find a site to start from) –Transactional (perform an action) Why is navigation necessary?

Overview of Adaptive Navigation Technologies 4 Motivation The navigation problem – “Lost in hyperspace” Existing solutions –Search engines –Back button –History –Bookmarks Why is this still not enough? Adaptive hypermedia

Overview of Adaptive Navigation Technologies 5 Sources of adaptation User’s knowledge (what I know) User’s goals (what I want to do) User’s background (what I am) User’s experience (my knowledge of hyperspace) User’s preferences (what I like)

Overview of Adaptive Navigation Technologies 6 Adaptive hypermedia applications Educational hypermedia systems (ISIS-Tutor) On-line information systems (HYPERFLEX) On-line help systems (EPIAIM, SYPROS) Information retrieval hypermedia (WebWatcher) Institutional hypermedia (Hynecosum) Personalized views (Information islands)

Overview of Adaptive Navigation Technologies 7 Adaptive hypermedia technologies

Overview of Adaptive Navigation Technologies 8 Adaptive navigation support Global guidance Local guidance Local orientation support Global orientation support Direct guidance Adaptive link sorting Adaptive link hiding –Hiding –Disabling –Removal Adaptive link annotation Adaptive link generation Map adaptation

Overview of Adaptive Navigation Technologies 9 Adaptive navigation overview

Overview of Adaptive Navigation Technologies 10 How is it done? Trails –Authored trails (explicitly defined) –Derived trails (derived from a query or ontology) –Emergent trails (from repeated navigation) Dynamic search –Fish search –Shark search –Info-Spiders

Overview of Adaptive Navigation Technologies 11 Examples: Adaptive annotation (ELM-ART)

Overview of Adaptive Navigation Technologies 12 Examples: Adaptive annotation (InterBook)

Overview of Adaptive Navigation Technologies 13 Examples: HyperBook Authoring (MetaLinks)

Overview of Adaptive Navigation Technologies 14 Examples: Adaptive annotation

Overview of Adaptive Navigation Technologies 15 Summary Potential problems –Some approaches are more useful than others for different scenarios Future trends –Integration with other applications –Open corpus adaptive hypermedia –Mobile hypermedia (handheld devices)

Overview of Adaptive Navigation Technologies 16 References Peter Brusilovsky –Adaptive navigation support (PsychNology Journal 2004) –Adaptive Hypermedia (umuai 2001) –Methods and techniques of adaptive hypermedia (umuai 1996) Navigating the World-Wide-Web

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