Re: [SMW-devel] Type:URL and Class Mappings

[Markus K. <ma...@se...>]

On Montag, 21. Juli 2008, Mov GP 0 wrote:
> Hi,
> I'm currently working on a new semantic wiki http://hackerspaces.org.
> Its my first semantic wiki that is available to the public ;-)
>

Interesting.

>
> I've run into some troubles so far:
> * "Type:URL does not work if the URL does not start with "http://".
> Examples are URLs to ftp, irc, gopher, icq, mailto, etc.

I cannot reproduce that problem. I tried ftp:// and even phone:// and both 
worked properly. If MediaWiki supports the given protocol (e.g. "ftp" but 
not "phone") then a link is created. Otherwise it is just printed as a 
string.


> * "Type:E-Mail" does not work if the address starts with mailto:

Right, it is expected to be just the email. It would be possible to extend 
that; feel free to file a feature request and we will pick that up when we 
find the time.

> * "Type:Currency" and "Type:Phone number" is on my wishlist.
> Unfortunately I don't speak PHP, but it might be interesting for other
> Users too.

It is not difficult to implement such things in PHP (though i do not know how 
Currency should work, given the continuously changing exchange rates). We are 
currently not planning to do that though, so if this is desired, someone 
should step forward now to do it.

>
> Further, I want to know if it is possible to map a Property to
> Relations in multiple Ontologies. An example might be "firstname",
> which is available in the FOAF ontology and the vCard ontology. Can I
> use multiple [[imported from::]] statements?

No, this will not work properly (and I am unsure how the export would have to 
look if a simple FOAF and vCard tool was to understand it ...). 

In general, if FOAF or vCard thought that their terms have the same meaning, 
then they would have described that in their own ontologies, wouldn't they? 
What you want to do here is make a statements about the relationship of two 
ontologies that others have created -- maybe you should contact these people 
to check if there is a reason why they did not do this yet.

>
> The next problem is the mapping between Categories and Classes of
> external Ontologies. Ie. I want to be able to map Category:Person to
> foaf:Person. How can I do that?

That will work with imported from as well. See 
http://semanticweb.org/wiki/Category:Person for an example.


Greetings from Patras,

Markus

>
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-- 
Markus Krötzsch
Semantic MediaWiki    http://semantic-mediawiki.org
http://korrekt.org    ma...@se...