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Fwd: Question about SSN [for wide review]

From: Krzysztof Janowicz <janowicz@ucsb.edu>
Date: Fri, 5 May 2017 08:41:11 -0700
To: SDW WG Public List <public-sdw-wg@w3.org>, Armin Haller <armin.haller@anu.edu.au>
Message-ID: <c8b620db-1715-f4f9-8ce3-bef76b5dd67d@ucsb.edu>

Please find the relevant part of the email from John Hodges I mentioned 
before (forwarded with his permission).


-------- Forwarded Message --------
Subject: 	Question about SSN
Date: 	Wed, 3 May 2017 16:35:28 +0000
From: 	HODGES Jr, John <jack.hodges@siemens.com>
To: 	janowicz@ucsb.edu <janowicz@ucsb.edu>
CC: 	HODGES Jr, John <jack.hodges@siemens.com>

Good morning Jano,
[...] He and I are having a disagreement about ssn:Property mapping to 
QUDT. The rdfs:comment says that ssn:Property is intrinsic to an entity, 
which would suggest that it is most equivalent to qudt:QuantityKind. But 
if I look at the rdfs:comment for ssn:Condition (which subclasses 
ssn:Property), and published examples, then I see that ssn:Condition 
relates a property, a value, and a unit, which seems more like a 
qudt:QuantityValue. A subclass that can represent value would suggest 
that the parent can represent value, so I am confused. We can go either 
way, but if the intention of the ssn:Property definition is one way or 
the other, then of course we would want to honor that intention.
Best regards,
Dr. Jack Hodges
Received on Friday, 5 May 2017 15:41:53 UTC

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