Re: schema.org proposal for extending Thing

On 4/9/13 3:40 PM, Raj Singh wrote:
> Reading the sameThingAs property [1], I do think that would serve
> mainly the same purpose. Thing/link as I described it would be more
> general, allowing for more types of relationships between the
> resource and the link, but honestly, I think sameThingAs covers most
> requirements.

I see a difference between the identification role of sameThingAs and 
Raj's proposal for a property that can be used to categorize something. 
This is based on my assumption that a category for the church named 
"Sagrada Familia" might be a link to the wikipedia category "Churches in 
Barcelona" or the geonames code "CH" for "church." If sameThingAs also 
exists as a property, then the link to dbpedia:Sagrada_familia would use 
that property.

I wouldn't expect to see sameThingAs -> geonames:CH.

Raj, have I understood your meaning of "category"?

kc

>
> I don't think Thing/url could be made to work for this purpose. You
> could do some mark up like that below, but the semantics would be too
> vague to do anything with it.
>
> <div itemscope itemtype="http://schema.org/Place"> <p
> class="headline" itemprop="name">First Baptist Church in America</p>
> <a href="picinside.html" itemprop="url">Here is a picture inside the
> church</url> <a href="picback.html" itemprop="url">Here is a picture
> of the back of the church</url> <a href="church.rdf"
> itemprop="url">This is some RDF about the church</url> </div>
>
> Just the fact that they are called out as "urls" about the place
> could tell  you that there's some relationship (but the documentation
> would have to make this clear) between the Thing and its child "url"
> properties. Is that enough semantics for the schema.org mission?
> Until now I didn't think it was, but maybe it is. It's a good debate
> to have...
>
> [1] http://www.w3.org/wiki/WebSchemas/ThingIdentity
>
> --- Raj The OGC: Making location count.
> http://www.opengeospatial.org/ogc/organization/staff/rsingh
>
>
> On Apr 9, at 5:55 PM, Justin Boyan <jaboyan@google.com> wrote:
>
>> Raj, re your second proposal, can you clarify the difference
>> between Thing/link, the existing Thing/url, and the object's id
>> (microdata @itemid, RDFa @about)? Would Thing/link serve the same
>> purpose as the proposed sameThingAs property?
>>
>> Thanks, Justin
>>
>>
>> On Tue, Apr 9, 2013 at 5:03 PM, Raj Singh
>> <rsingh@opengeospatial.org> wrote: I'm developing schema.org schema
>> for points of interest (POIs), based on a lot of work on a
>> conceptual model [1]. I've created an initial implementation using
>> existing schema.org vocabulary -- particularly the Place object
>> [2].
>>
>> Two things seem to be omitted from the core schema, which are key
>> components of our POI model. First is the idea of categorization,
>> or freeform tagging, such as is present in the Atom category
>> element [3]. This is a concept used in the POI model, but seems
>> incredibly useful for any type of object, and therefore I believe
>> category should be a property of Thing.
>>
>> Second is the idea of related links. The concept of identifying
>> related resources is a widespread requirement present in most
>> information architectures. HTML has it [4]. Atom has it [5].
>> Semantic technology such as RDF is practically based on it. Why not
>> schema.org? In the POI work, we adopted the IANA link relation
>> types [6], but we weren't totally happy with those. Doesn't it seem
>> like schema.org's Thing needs a link property?
>>
>>
>> [1] http://www.w3.org/2010/POI/wiki/Data_Model [2]
>> http://openpois.ogcnetwork.net/pois/51f2e335-781e-4651-bfe2-d54682238919
>>
>>
[3] http://www.atomenabled.org/developers/syndication/#category
>> [4]
>> http://www.w3.org/TR/1999/REC-html401-19991224/struct/links.html#h-12.3
>>
>>
[5] http://www.atomenabled.org/developers/syndication/#link
>> [6]
>> http://www.iana.org/assignments/link-relations/link-relations.xml
>>
>> --- Raj The OGC: Making location count.
>> http://www.opengeospatial.org/ogc/organization/staff/rsingh
>>
>>
>>
>>
>
>
>

-- 
Karen Coyle
kcoyle@kcoyle.net http://kcoyle.net
ph: 1-510-540-7596
m: 1-510-435-8234
skype: kcoylenet

Received on Wednesday, 10 April 2013 15:40:56 UTC