Re: FOAF and relationship

• From: Jeremy Carroll <jjc@hplb.hpl.hp.com>
• Date: Fri, 25 Jun 2004 15:58:21 +0100
• To: Tim Nowaczyk <zimage@cs.wisc.edu>
• Cc: www-rdf-interest@w3.org
• Message-ID: <40DC3D8D.6010603@hplb.hpl.hp.com>

Tim Nowaczyk wrote:

> From the FOAF schema:
> knows- A person known by this person (indicating some level of reciprocated
> interaction between the parties). 
> 
> reciprocate
>   1. To give or take mutually; interchange.
>   2. To show, feel, or give in response or return.
> 
> So, foaf:knows is a symetric property.
> 
> In relationship, though, there are many non-symetric properties that are
> subclasses of foaf:knows.  Should, for example, rel:knowsOf be a
> superclass of foaf:knows?
> 
> Thanks,
> Tim Nowaczyk
> 


That's cool

foaf:knows rdf:type owl:SymmetricProperty .
eg:isHusbandOf rdfs:subPropertyOf foaf:knows.
<a> eg:isHusbandOf <b> .

does entail

<b> foaf:knows <a> .

but does not entail

<b> eg:isHusbandOf <a> .


Jeremy

Received on Friday, 25 June 2004 10:58:48 UTC