Max Voelkel schrieb:
> Hi,
>
> the overall question seems to be how a semantic wiki creates triples.
> Of course, technically, one could create triples everywhere.
>
> Not allowing this in Semantic MediaWiki has two reasons:
>
> 1) (the important reason)
>
> Make it easier for the user. One has not to think in triples, annotated
> links
> is enough. Even better: whenever a search result brings page X up, but one
> is
> courious why, it's enough to go to page X and look there. There can be
> no
> ohter place where a wrong triple about X can be made.
>
> 2) (the tiny reason)
> It's easier to handle. Whenever a user edits a page X, semantic
> mediawiki
> simply removes all triples (X,*,*), parses the page and adds triples
> as
> needed.
>
> A paper about possible ways to create annotations from wiki pages (the
> design
> space) is here [1]
>
Just wanted to mention that IkeWiki - in contrast to Semantic MediaWiki
- stores relations separately from the page content and thus does
support adding arbitrary relations. There are also several reasons in
favor of this approach:
1) (the first important reason)
it avoids a maintenance problem, as it is not necessary to check
whether a relation has been removed when a page is saved.
2) (the other important reason)
this basically allows the system to be used as a full RDF graph
editor (with support for the basic OWL constructs).
There are some drawbacks of this approach, the main being that
versioning of metadata changes is more complex (but we are sure to be
able to solve this issue).
It is also to a large extent a matter of taste and a matter of which
workflow one favors. I even thought about supporting both styles of
doing annotations in IkeWiki - it really isn't too hard to do.
Greetings,
--
Sebastian
| Dr. Sebastian Schaffert [EMAIL PROTECTED]
| Salzburg Research Forschungsgesellschaft http://www.salzburgresearch.at
| Knowledge Based Information Systems +43 662 2288 423
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