RE: Link between FeatureOfInterest and xxxProperty

The relevant standard from the OGC/ISO TC 211 world is ISO 19109 "Rules for Application Schema" which describes the 'General Feature Model' in which feature-types are defined in terms of their properties - i.e. properties are strongly bound with the feature-types that they apply to. Its really just standard object modelling, but dressed up to use terminology from the geospatial domain (i.e. "Features" instead of real-world-objects). 

I was the editor for the most recent edition of ISO 19109:2015, and managed to get a couple of significant changes relevant to our work here incorporated 
(i) a strong recommendation that properties should be defined and names carefully to allow them to be re-used on different feature types
(ii) a meta-class for "ValueAssignment" with "Observation" as one of the concrete instantiations. 

Unfortunately the document is behind ISO's paywall, but I've attached the three key figures here.  

Also see Figure 2 in the OGC/ISO standard for O&M, available from http://www.opengeospatial.org/standards/om (get Topic 20, not the XML implementation). 

Simon 

-----Original Message-----
From: Raúl García Castro [mailto:rgarcia@fi.upm.es] 
Sent: Friday, 24 February, 2017 22:43
To: Rob Atkinson <rob@metalinkage.com.au>
Cc: Maxime Lefrançois <maxime.lefrancois@emse.fr>; SDW WG Public List <public-sdw-wg@w3.org>
Subject: Re: Link between FeatureOfInterest and xxxProperty

Dear all,

I think that being able to represent which properties relate to a certain feature is a requirement needed both in SOSA and in SSN.

For example, in the SSN usage analysis
(http://w3c.github.io/sdw/ssn-usage/), even if it is not exhaustive, 3 ontologies and 2 datasets use the SSN properties to do so.

So I propose to open an issue to study this in deeper detail.

Kind regards,

El 24/2/17 a las 12:18, Rob Atkinson escribió:
>
> the FeatureOfInterest is an abstract class that a domain Class will be 
> mapped to in an implementation - so the properties being measured are 
> references to the properties defined in that class - i.e. I dont think 
> we need to define the link that direction other than somehow stating 
> this substitution
>
> i.e. perhaps  its defined in the implementation by making a statement 
> that domain:Class rdfs:subClassOf sosa:FeatureOfInterest or even that 
> there is a restriction on the range on sosa:featureOfInterest to be 
> domain:Class
>
> I think its worth an OWL expert to lay out the exact options here in 
> examples.
>
> Rob
>
>
>
>
> On Fri, 24 Feb 2017 at 02:24 Maxime Lefrançois 
> <maxime.lefrancois@emse.fr <mailto:maxime.lefrancois@emse.fr>> wrote:
>
>     Dear all,
>
>     Implementing ACTION-268, I stumbled again on the fact that there is
>     currently no link between FeatureOfInterest and xxxProperty defined
>     in SOSA.
>     See also the figure attached
>     to
> https://lists.w3.org/Archives/Public/public-sdw-wg/2017Feb/0090.html

>     .
>
>     I would like us to discuss this shortly during the next call, there
>     are two simple options that I listed in the following wiki page:
>
>
> https://www.w3.org/2015/spatial/wiki/Link_between_FeatureOfInterest_an

> d_xxxProperty
>
>     For your interest, in one of the core SEAS ontologies we promote the
>     definition of  "functional sub-properties of ssn:hasProperty". See 
> [1].
>
>     For example, some domain ontology would define:
>
>     ex:consumption a owl:ObjectProperty , owl:FunctionalProperty ;
>       rdfs:subPropertyOf seas:hasProperty ;
>
>     Then in static instance data:
>
>     <fridge/1> a seas:FeatureOfInterest ;
>       ex:consumption <fridge/1/consumption> .
>
>     Core ontology seas:EvaluationOntology defines various ways to give
>     such Property a value.
>
>     [1] - https://w3id.org/seas/FeatureOfInterestOntology

>
>     Kind regards,
>     Maxime
>



-- 

Dr. Raúl García Castro
http://www.garcia-castro.com/


Ontology Engineering Group
Departamento de Inteligencia Artificial
Escuela Técnica Superior de Ingenieros Informáticos Universidad Politécnica de Madrid Campus de Montegancedo, s/n - Boadilla del Monte - 28660 Madrid
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