- From: Steve Harris <steve.harris@garlik.com>
- Date: Wed, 25 Jul 2012 17:08:30 +0100
- To: Dave Reynolds <dave.e.reynolds@gmail.com>
- Cc: semantic-web@w3.org
Yes, exactly, I was writing in a bit of a hurry, maybe a UUID would make made it clearer. - Steve On 2012-07-25, at 17:04, Dave Reynolds wrote: > If I understand Steve's point he was meaning that you can mint a new unique edge:xxxxxx identifier for each edge. > > [Presumably you could make that a subPropertyOf the actual property you wanted to assert.] > > Cheers, > Dave > > On 25/07/12 16:47, Aidan Hogan wrote: >> Steve, >> >> If I understand Melvin's point, in RDF, edge:123456 is the URI of a >> property used to label the edge, not the edge itself. >> >> Analogously, you don't identify a class-instance by it's class URI. >> >> An edge is between two things. It might be directed and it might be >> labelled. In RDF it's both. >> >> Hence, the edge would encapsulate the full triple, including source >> (subject) and target (object) nodes, as well as the label (predicate). >> >> Cheers, >> Aidan >> >> On 25/07/2012 16:18, Steve Harris wrote: >>> Nothing stops you from giving edges a unique URI, infact I think I've >>> worked on systems that did that. >>> >>> e.g. >>> >>> <foo> <http://example.com/edge/123456> 1 . >>> <http://example.com/edge/123456> a rdf:Property . >>> ... >>> >>> - Steve >>> >>> On 2012-07-25, at 16:07, Melvin Carvalho wrote: >>> >>>> Sorry if this topic has been covered before, but I have a question >>>> based on the axioms of the web, in particular: >>>> >>>> *Axiom 0a: Universality 2 Any resource of significance should be >>>> given a URI. >>>> * >>>> In this case we consider the web to be a directed graph (of nodes and >>>> edges), where a *node* corresponds to a *resource* but edge does not. >>>> >>>> We are encouraged to make nodes universal by giving them a URI. >>>> >>>> Why dont edges get the same treatment, ie encouragment to give it a >>>> (universal) name. Is it even practical? >>>> >>>> I know there's such thing as reification but that seems to be >>>> unpopular (maybe before my time). >>>> >>>> I'm just curious as to whether this seems asymmetrical, that nodes are >>>> seemigly treated in one way, and edges in another? >>> >>> -- >>> Steve Harris, CTO >>> Garlik, a part of Experian >>> +44 7854 417 874 http://www.garlik.com/ >>> Registered in England and Wales 653331 VAT # 887 1335 93 >>> Registered office: Landmark House, Experian Way, Nottingham, Notts, >>> NG80 1ZZ >>> >> >> > > -- Steve Harris, CTO Garlik, a part of Experian +44 7854 417 874 http://www.garlik.com/ Registered in England and Wales 653331 VAT # 887 1335 93 Registered office: Landmark House, Experian Way, Nottingham, Notts, NG80 1ZZ
Received on Wednesday, 25 July 2012 16:08:59 UTC