773Re: [newsml-g2] Properties of a concept
- Dec 22, 2008
On 22 Dec 2008 at 17:04 Paul Harman wrote:
> Hi,>> I'm examining adopting G2 as a common interchange format between PA> content systems. Regarding typical article-based content it's a fairly> obvious choice of standard. However I also want to exchange data 9as> related to articles) - cinema listings, TV guides, sports results,> election results, school league tables.>> My particular query is to do with how I can extend conceptItems to add> new kinds of facts - for example, how many seats a particular cinema> has. The concept of 'number of seats' could come from a controlled> vocabulary of 'properties of a cinema', but the /value/ for number of> seats cannot practically come from a controlled vocabulary. But that's> not my understanding of how Qcodes work... Shouldn't every Qcode be> 'resolvable' as an item in it's own right?
Paul, I just recently discussed something like that with dpa regarding EventsML-G2:
- for fine grained descriptions of a concept use the <related> property (be aware: the <facet> is intended to refine the type of the concept, e.g. if the type is "person" you may add the facet "male" to it.)
- a <related> property provides:-- a @rel to express the kind of relationship, e.g. "numberOfSeats"-- a @qcode or a @literal for the value
This way you could add e.g.
<related rel="poiProps:noOfSeats" literal="83" />
<related rel="poiProps:operator" qcode="pacompanies:UCI" />
(What I discussed with dpa: this way you can also add the CEO of a company - and more)
>> Is this where the G2 standard 'ends' and I need to invoke my own XML> fragments via the extensibility options - or, like NewsML 1.x, is there> a generic 'Property' element that I've overlooked?
I still consider the G2 design as covering many, many requirements, this way you can avoid introducing new properties, you only have to add the corresponding taxonomies for relationships.
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