Re: ISSUE-5 Definition of Resource

Just to clarify (sorry i missed again :( ):

Does this cover that a shape can restrict something identified by a blank node? 

Axel




(sent from my mobile)
--
Prof. Axel Polleres, WU
url: http://www.polleres.net/  twitter: @AxelPolleres

> On Dec 18, 2014, at 21:55, Arthur Ryman <ryman@ca.ibm.com> wrote:
> 
> I'd like to summarize the discussion from the WG today and ask that we 
> arrive at a consensus on the meaning of terms. Here are definitions that 
> align with W3C specs.
> 
>> From a web point of view, a resource is any identifiable thing. We
> identify them using URIs. 
> 
>> From an HTTP point of view, there are two kinds of resource, namely
> information resources and real-world objects. The term "real-world object" 
> denotes any resource that is not an information resource. This implies 
> that fictional characters are real-world objects.
> 
> An HTTP server should return a 3XX response code when a real-world object 
> URI that it hosts is requested via HTTP GET. The response should redirect 
> to an information resource URI that has information about the real-world 
> object.
> 
> An HTTP server should return a 2XX response code when an information 
> resource URI that it hosts is requested via HTTP GET. The response should 
> contain a representation of the information resource in some content type, 
> ideally one of the content types given by the Accept header.
> 
> For the purposes of the wg, we are interested in RDF content types.
> 
> An RDF representation consists of a set of triples which can be thought of 
> as forming a graph, technically a directed, labelled graph.
> 
> The nodes in an RDF graph are labelled by RDF terms, i.e. URI, Literal, 
> and Blank Node. The arcs are labelled by URIs. There are other constraints 
> defined in the RDF specs.
> 
> Since we can visualize graphs as geometric objects, the term "shape" has 
> been adopted to describe sets of graphs that share certain 
> characteristics, e.g. those required by some application. A shape 
> describes the expected contents of a graph. This includes expected arc 
> labels, occurrence constraints, etc. 
> 
> The term "resource shape" is an abbreviation for the "shape of the graph 
> of the RDF representation of an information resource".
> 
> _________________________________________________________
> Arthur Ryman
> Chief Data Officer
> SWG | Rational
> 905.413.3077 (phone) | 416.939.5063 (cell)
> IBM InterConnect 2015
> 
>