348 |
and tightly structure knowledge representation. |
and tightly structure knowledge representation. |
349 |
It used a frame-based representation, |
It used a frame-based representation, |
350 |
with custom schemas: classes contain slots to be filled by other |
with custom schemas: classes contain slots to be filled by other |
351 |
objects. |
objects. However, the system is still restricted to using separate |
352 |
|
sessions and defining schemas for each session - the system is |
353 |
|
a knowledge organization tool, not a full operating environment. |
354 |
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|
355 |
- allows defining and changing the schemas |
- allows defining and changing the schemas |
356 |
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|
357 |
- allows the user to define the information objects that |
- allows the user to define the information objects that |
358 |
are relevant |
are relevant |
359 |
|
|
360 |
- structures change in experience (`Marshall et al. 1993`) |
- structures change in experience |
361 |
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(`Marshall et al. 1993`) |
362 |
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|
363 |
- sessions, though, defined with fixed schemas |
- sessions, though, defined with fixed schemas |
364 |
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|
376 |
Structural computing |
Structural computing |
377 |
-------------------- |
-------------------- |
378 |
|
|
379 |
Hypermedia operating systems (HOSS), `Nürnberg et al (1996)`_ |
The change of the computer system abstractions |
380 |
|
in Hypermedia operating systems (Nürnberg et al 1996) |
381 |
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and the subsequent structural computing framework (Nürnberg et al 1997) |
382 |
|
are vital for an entirely item-based environment. XXX |
383 |
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Structural computing is introduced in `Nürnberg et al (1997)`_ |
|
384 |
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|
385 |
RDF, Semantic Web |
RDF, Semantic Web |
386 |
----------------- |
----------------- |
390 |
Open Hypermedia |
Open Hypermedia |
391 |
--------------- |
--------------- |
392 |
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|
393 |
|
XXX Should we just not mention open hypermedia? |
394 |
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|
395 |
- Focus: interoperability, existing apps. |
- Focus: interoperability, existing apps. |
396 |
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|
397 |
- Nelson (XXX) says "An application is a prison" -- |
- Nelson (XXX) says "An application is a prison" -- |