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213 |
- orthogonal parts of the structure |
- orthogonal parts of the structure |
214 |
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215 |
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Next, we shall discuss the two alternatives for the underlying structure: |
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zzStructure and RDF [#zzstructure-rdf]_. |
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Zzstructure (used in ZigZag(TM)) |
Zzstructure (used in ZigZag(TM)) |
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-------------------------------- |
-------------------------------- |
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Ted Nelson's original |
Ted Nelson's original |
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hyperstructure and applitude concepts |
hyperstructure and applitude concepts |
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were developed for the zzStructure[#zzstructure] structure (`Nelson 1999a`_), |
were developed for the zzStructure [#zzstructure]_ structure (`Nelson 1999a`_), |
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supplemented by the |
supplemented by the |
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Floating world (`Nelson 1999b`_) ideas. |
Floating world (`Nelson 1999b`_) ideas. |
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248 |
Resource Description Framework (RDF, used in Fenfire) |
Resource Description Framework (RDF, used in Fenfire) |
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----------------------------------------------------- |
----------------------------------------------------- |
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- RDF structure |
The RDF structure (`Lassila and Swick 1999`_) is, for our purposes, |
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a 3-hypergraph. |
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- Loom structure views, particularly wheel |
- Loom structure views, particularly wheel |
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682 |
about them, in this case the idea about how to develop |
about them, in this case the idea about how to develop |
683 |
one of them. |
one of them. |
684 |
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685 |
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.. [#zzstructure-rdf] RDF and zzStructure are actually closely |
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related: zzStructure is obtained if a RDF graph is constrained |
687 |
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by two uniqueness conditions: for all x, y, there can be |
688 |
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at most one triple of the form (x, y, *), and |
689 |
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at most one triple of the form (*, x, y). |
690 |
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691 |
.. [#zzstructure] zzStructure is the "generic term" Nelson |
.. [#zzstructure] zzStructure is the "generic term" Nelson |
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recommends for discussing the structure used in ZigZag(TM), |
recommends for discussing the structure used in ZigZag(TM), |
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(Nelson's trademark). |
(Nelson's trademark). |
694 |
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695 |
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696 |
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697 |
.. [#libvob-speed] For some changes (panning, zooming), the scene |
.. [#libvob-speed] For some changes (panning, zooming), the scene |
698 |
need not be regenerated but only the coordinate system |
need not be regenerated but only the coordinate system |
699 |
parameters adjusted. |
parameters adjusted. |
711 |
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712 |
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713 |
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RDF and ZigZag(tm) structure are actually closely |
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related: ZigZag(tm) is obtained if a RDF graph is constrained |
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by two uniqueness conditions: for all x, y, there can be |
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at most one triple of the form (x, y, *), and |
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at most one triple of the form (*, x, y). |
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