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Re: How can I express containment/composition?

From: Hugh Glaser <hg@ecs.soton.ac.uk>
Date: Thu, 21 Feb 2013 14:48:06 +0000
To: Frans Knibbe | Geodan <frans.knibbe@geodan.nl>
CC: "<public-lod@w3.org>" <public-lod@w3.org>
Message-ID: <387E72E216DF1247A2F8ED4819C93BA7477FE316@UOS-MSG00042-SI.soton.ac.uk>
Yes, of course it all depends on what you actually want to say: political/administrative/geographic/geometry etc.
John Goodwin has been using
http://data.ordnancesurvey.co.uk/ontology/spatialrelations/within

http://data.ordnancesurvey.co.uk/ontology/spatialrelations/contains

see
http://data.ordnancesurvey.co.uk/id/7000000000001386

for administrative geographies, which might be the same as some others and/or what you want.
Best

On 21 Feb 2013, at 14:10, Frans Knibbe | Geodan <frans.knibbe@geodan.nl>
 wrote:

> Barry and Matteo, thank you for pointing me to the GeoNames Ontology. Geographical containment can also be found in GeoSPARQL (http://schemas.opengis.net/geosparql/1.0/geosparql_vocab_all.rdf): sfContains.
> 
> I had the feeling that what I primarily needed was the logical concept of containment/composition, because that would allow reasoning on the part of the data consumer. But I guess it would be best to specify both logical AND geographical containment. As far as I can tell, the geographical containment in GeoSPARQL and GeoNames does not imply logical containment. But perhaps I am overestimating the power of dcterms:hasPart?
> 
> I was thinking about an example. Let's say the following is known:
> 
> 1) A country consists of provinces
> 2) For each country, the complete set of provinces is available
> 3) For each province the number of inhabitants is available
> 
> Could a machine answer the question "Which country has the highest number of inhabitants?" without help from a human?
> 
> Regards,
> Frans
> 
> 
> 
> On 21-2-2013 14:10, Matteo Casu wrote:
>> You could also check the GeoNames ontology, which considers administrative subdivisions: http://www.geonames.org/ontology/documentation.html

>> E.G.: in the USA, level 1 administrative subdivisions are States. In Italy, they are Regions.
>> 
>> It is a minor change of perspective with respect to yours.
>> 
>> 
>> Il giorno 21/feb/2013, alle ore 14:01, Frans Knibbe | Geodan <frans.knibbe@geodan.nl> ha scritto:
>> 
>>> Thank you Martynas, that seems to be just what I was looking for!
>>> 
>>> Frans
>>> 
>>> On 21-2-2013 13:54, Martynas Jusevičius wrote:
>>>> Hey Frans,
>>>> 
>>>> Dublin Core Terms has some general properties for this:
>>>> dct:hasPart http://dublincore.org/documents/dcmi-terms/#terms-hasPart

>>>> dct:isPartOf http://dublincore.org/documents/dcmi-terms/#terms-isPartOf

>>>> 
>>>> Martynas
>>>> graphity.org
>>>> 
>>>> On Thu, Feb 21, 2013 at 2:47 PM, Frans Knibbe | Geodan
>>>> <frans.knibbe@geodan.nl> wrote:
>>>>> Hello,
>>>>> 
>>>>> I would like to express a composition relationship. Something like:
>>>>> A Country consist of Provinces
>>>>> A Province consists of Municipalities
>>>>> 
>>>>> I thought this should be straightforward because this is a common and
>>>>> logical kind of relationship, but I could not find a vocabulary which allows
>>>>> be to make this kind of statement. Perhaps I am bad at searching, or maybe I
>>>>> did not use the right words.
>>>>> 
>>>>> I did find this document:
>>>>> http://www.w3.org/2001/sw/BestPractices/OEP/SimplePartWhole/ ("Simple
>>>>> part-whole relations in OWL Ontologies"). It explains that OWL has no direct
>>>>> support for this kind of relationship and it goes on to give examples on how
>>>>> one can create ontologies that do support the relationship in one way or the
>>>>> other.
>>>>> 
>>>>> Is there a ready to use ontology/vocabulary out there that can help me
>>>>> express containment/composition?
>>>>> 
>>>>> Thanks in advance,
>>>>> Frans
>>>>> 
>>>>> 
>>> 
>>> 
>> 
> 
> 
> 

Received on Thursday, 21 February 2013 14:49:35 UTC

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