Æliens

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information hyperspace

the logical information space may further be structured in a logical information hyperspace, where the clues become hyperlinks that provide directional information, and the information space can be navigated by the user following directional clues.

history

• 1945 -- Vannevar Bush (Memex) -- as we may think,  [Bush]
• 1963 -- Douglas Engelbart (Augment) -- boosting the human intellect  [Engelbart]
• 1980 -- Ted Nelson (Xanadu) -- everything is intertwinkled,  [Nelson]

• flash 1: we are in trouble (human mankind)
• flash 2: we need to boost mankind's ability to deal with complex urgent problems
• flash 3: aha, graphic vision surges forth of me ...
• flash 4: hypermedia -- to augment the human intellect
• flash 5: augment (multimedia) workstation -- portal into an information space

hypermedia systems

• components -- text, graphics, audio, video
• links -- relations between components
• presentation -- structured display

A curriculum promotes a false simplification of any subject, cutting the subject's many interconnections and leaving a skeleton of sequence which is only a charicature of its richness and intrinsic fascination.

classification of hypermedia systems

• macro-literary systems -- publishing, reading, criticism
• problem exploration tools -- authoring, outlining, programming
• browsing systems -- teaching, references, information
• general hypermedia technology -- authoring, browsing, collaboration
• embedded hypermedia -- CASE, decision support, catalogs

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component

• content -- text, graphics, video, program
• attributes -- semantic description
• anchors -- (bi-directional) links to other documents
• presentation -- display characteristics

(CMIF) multimedia model

• data block -- atomic component
• channel -- abstract output device
• synchronization arc -- specifying timing constraints
• event -- actual presentation

Amsterdam Hypermedia Model

• contents -- data block
• attributes -- semantic information
• anchors -- (id, value)
• presentation -- channel, duration, ...

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research issues

• search and query -- for better access
• composition -- for imposing structure
• virtual structures -- on top of existing structures
• computation -- for flexibility and interaction
• versioning -- to store modification histories
• collaborative work -- sharing objects with multiple users
• extensibility and tailorability -- to adapt to individual preferences