- From: Raj Singh <rsingh@opengeospatial.org>
- Date: Wed, 8 May 2013 19:30:53 -0400
- To: Dan Brickley <danbri@danbri.org>
- Cc: "public-vocabs@w3.org" <public-vocabs@w3.org>
I suppose that's a fair summary. But I wasn't proposing going so far as the flexibility of the concept system of SKOS. I was thinking more along the lines of Dublin Core's subject [1] (my original reference was to Atom's category, which has roots in Dublin Core's subject). [1] http://dublincore.org/documents/2012/06/14/dcmi-terms/?v=terms#terms-subject --- Raj The OGC: Making location count. http://www.opengeospatial.org/ogc/organization/staff/rsingh On May 8, at 7:09 PM, Dan Brickley <danbri@danbri.org> wrote: > On 9 May 2013 00:00, Raj Singh <rsingh@opengeospatial.org> wrote: >> I haven't heard anything on this for a month. I think Dan was on vacation the week it was discussed, which may be part of the problem. Dan, could you comment? > > This one did escape me. Is this a fair summary: > > 1. there is support for sameThingAs (or 'sameAs'; I'm more and more > convinced to go with OWL-compatible naming). > 2. there is interest in a categorisation mechanism that operates at a > different level to schema.org's built-in typing system; something > close to W3C SKOS? > > Dan > >> --- >> Raj >> The OGC: Making location count. >> http://www.opengeospatial.org/ogc/organization/staff/rsingh >> >> >> On Apr 10, at 1:37 PM, Raj Singh <rsingh@opengeospatial.org> wrote: >> >>> I had two proposals. One was category and the other was related link. sameThingAs is one type of related link -- the most important type IMHO. So I agree it does not replace the need for category. I still suggest adding that property to Thing. >>> >>> --- >>> Raj >>> >>> On Apr 10, 2013, at 11:40 AM, Karen Coyle <kcoyle@kcoyle.net> wrote: >>> >>>> >>>> >>>> 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, 8 May 2013 23:31:23 UTC