Alexandre Passant wrote:
> Hi all,
>
> I was thinking about adding cardinality restrictions to some of the
> SIOC properties (if so, the ontology will use OWL properties instead
> of RDFS one, but I don't think that's an issue).
> It will allow to more precisely mention what we expect from SIOC data
> (and also valid this).
>
> The list has been added to OntologieIssues page of the wiki [1] and
> here's a few one to discuss:
>
> * account_of: min = 1; max = 1 .
> If an account is shared by more that one foaf:Person, I think it's
> better to use a foaf:Group as range since sioc:account_of has
> foaf:Agent for range (not already in the specs, but seems it was
> agreed on the list [2])
>
> * avatar: max = 1 ?
> A foaf:Person can have many foaf:depiction, but for a give user maybe
> one avatar is enough ?

restrictive, IMO

> * content: min = max = 1
> Only one content for a post (+ the encoded version)
>
> * email: max=1 ?
> Only on email per sioc:User ?
> Is that needed ?

restrictive, IMO

> * email_sha1: same as email

restrictive, IMO

> * has_container: min = 1;
> If max = 1, can we use sioc:sibling for same posts on other forums ?
>
> * has_creator: no min, as we can have only foaf:maker; no max (i.e.
> colaborative pages / wikis)
>
> * has_host: min = 1; max ?
>
> * id: max = 1
> Must be unique, as the spec says
>
> * ip_adress: max = 1
> Should be unique for a given sioc:Post
>
> * link: max = 1
> Only one HTML page for a sioc:Post ?

restrictive, IMO

> * name: min = 1 (needed ?); max = 1 (only on name per sioc:User ?)

not sure for the last one, but for the ones where I found the card
restrictions are unnecessarily restrictive, I added it, the others look
fine IMO.

axel

> [1] http://esw.w3.org/topic/SIOC/OntologyIssues
> [2] http://groups.google.com/group/sioc-dev/tree/browse_frm/thread/b6a9a0b677195eed/f2bd54b7f114459b?rnum=1&q=hullo&_done=%2Fgroup%2Fsioc-dev%2Fbrowse_frm%2Fthread%2Fb6a9a0b677195eed%2F4efd8f5a4f3c8445%3Flnk%3Dgst%26q%3Dhullo%26rnum%3D1%26#doc_fed5face728281f2
>
> >
>

--
Dr. Axel Polleres
email: axel@polleres.net url: http://www.polleres.net/

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