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Repository of the Spatial Data on the Web Working Group for the SOSA/SSN vocabulary
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Alignment of iso19156-om:OM_Observation.featureOfInterest with sosa:hasFeatureOfInterest #128

Closed maximelefrancois86 closed 8 months ago

maximelefrancois86 commented 10 months ago

This is a very minor issue:

In section 6.3.5 Property Alignments, alignment to OM, it is stated that:

iso19156-om:OM_Observation.featureOfInterest equivalent property sosa:hasFeatureOfInterest

Actually sosa:hasFeatureOfInterest can also be applied to Actuations. And depending on the resolution of issue #111 , there may be even more classes that it will apply to.

I suggest to change this alignment as follows:

iso19156-om:OM_Observation.featureOfInterest sub property of sosa:hasFeatureOfInterest

And see if the same reasoning applies to other alignments.

KathiSchleidt commented 10 months ago

Related - in OMS we also have OMS:Sampling.featureOfInterest

dr-shorthair commented 10 months ago

Will we be keeping the O&M alignment in this version? See #121 Since OMS = O&Mv3.0 the OMS alignment supersedes the O&M alignment.

I propose to retire the O&Mv2.0 alignment from this edition.

dr-shorthair commented 9 months ago

The O&Mv2 alignment has been retired.

The OMS alignment is summarized here: https://w3c.github.io/sdw-sosa-ssn/ssn/#OMS-Alignment-Property . There are several 1:n mappings. Each of these possibly implies a missing 'super-property' in OMS.

However, there is no sub-property capability in UML. And it is a UML pattern that scopes property names to classes, even when the useful semantics don't differ.

Nevertheless, it would be possible to define sub-properties in the sosa-oms: namespace, with the sub-property axioms living in the ssn-oms.ttl graph. e.g.

# in the SOSA-OMS graph

sosa-oms:observationHasFeatureOfInterest a owl:ObjectProperty .
sosa-oms:samplingHasFeatureOfInterest a owl:ObjectProperty .
sosa-oms:samplingHasFeatureOfInterest a owl:ObjectProperty .

# in the SSN-OMS graph

sosa-oms:observationHasFeatureOfInterest rdfs:subPropertyOf sosa:hasFeatureOfInterest .
sosa-oms:samplingHasFeatureOfInterest rdfs:subPropertyOf sosa:hasFeatureOfInterest .
sosa-oms:actuationHasFeatureOfInterest rdfs:subPropertyOf sosa:hasFeatureOfInterest .

and then use these in the alignment table. This is arguably more precise semantically, however it moves the SOSA-OMS alignment one step further away

What do you prefer?

dr-shorthair commented 8 months ago

O&Mv2 alignment has been retired