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RE: issue-87: wiki page Property_and_Observable_Property to compare the proposals

From: <Simon.Cox@csiro.au>
Date: Sun, 12 Feb 2017 09:13:42 +0000
To: <rob@metalinkage.com.au>, <maxime.lefrancois@emse.fr>, <public-sdw-wg@w3.org>
Message-ID: <d4031ac803c74035b188bad5f2faf8a3@exch1-mel.nexus.csiro.au>
Like I said

Ø  My expectation is that all Actuable Properties are Observable, so this is not the disjuncture that matters.
I’m not too worried about whether actuable properties are all observable or not.
But I want us to be clear that the set of non-observable-properties is not the same as the set of actuable properties.

Simon

From: Rob Atkinson [mailto:rob@metalinkage.com.au]
Sent: Friday, 10 February, 2017 16:10
To: Cox, Simon (L&W, Clayton) <Simon.Cox@csiro.au>; maxime.lefrancois@emse.fr; public-sdw-wg@w3.org
Subject: Re: issue-87: wiki page Property_and_Observable_Property to compare the proposals

@Simon,

is the non-observable property just hidden in the incomplete definiton """"A Quality of a FeatureOfInterest that is observable, actuable, or ...  "?

It may be perverse design, but i see no reason why an actuable property needs to be observable - "turn the light on" does not imply you can ask "is the light on?".

maybe we a specici actuable property class, need a statement to say that observable and actuable properties are _not_ disjoint?

@all - what are the implications of there being no axioms that allow us to tell whether an instance of a ssn:Property is an instance of sosa:ObservableProperty, unless this is the explicitly declared type? Would a reasoner conclude that all ssn:Property instances are sosa:ObservableProperty, or they are not, or safely just ignore the possibility they are?

Rob

On Fri, 10 Feb 2017 at 11:31 <Simon.Cox@csiro.au<mailto:Simon.Cox@csiro.au>> wrote:
I believe the subclassing of properties that you have assumed in this proposal is incorrect.

My expectation is that all Actuable Properties are Observable, so this is not the disjuncture that matters.

Non-observable-properties are a different subset altogether.
The examples I originally gave include Name, Price, Owner, and then there are things like ScheduledServiceDate, CatalogueNumber … These are properties that are not inherently observable by sensing or simulation.

(I don’t accept the “reading of a name-tag” as being a making-an-estimate-of-the-name kind of sensing activity – which Kerry proposed, I think light-heartedly.)

Simon

From: Maxime Lefrançois [mailto:maxime.lefrancois@emse.fr<mailto:maxime.lefrancois@emse.fr>]
Sent: Friday, 10 February, 2017 07:51

To: SDW WG Public List <public-sdw-wg@w3.org<mailto:public-sdw-wg@w3.org>>
Subject: issue-87: wiki page Property_and_Observable_Property to compare the proposals

Dear all,

Wiki page https://www.w3.org/2015/spatial/wiki/Property_and_Observable_Property lists different proposals for the integration of oldssn:Property in SOSA and the new SSN.

Please add pros, cons, or other solutions.
Please modify the definitions if necessary.

This is related to ISSUE-87 and a solution to this issues shall be voted during the next call.

Best,
Maxime
Received on Sunday, 12 February 2017 09:14:51 UTC

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