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RE: hasResult / Sampling in SOSA & ISSUE-90

From: <Simon.Cox@csiro.au>
Date: Fri, 10 Feb 2017 00:35:51 +0000
To: <armin.haller@anu.edu.au>, <danh.lephuoc@tu-berlin.de>, <public-sdw-wg@w3.org>, <kerry.taylor@anu.edu.au>, <janowicz@ucsb.edu>, <maxime.lefrancois@emse.fr>
Message-ID: <92f3573490694567a9e0c45b3e469729@exch1-mel.nexus.csiro.au>
Yes, thanks Danh. 

Under Option 3 you note 

> Result is a role, not a proper class 

Yes, I agree. In O&M we left it as a wildcard, and that was when dealing only with observation results, which are at least only 'values'! 

In SOSA the scope is explicitly increased to include Actuation and Sampling, the results of which are less clear. As mentioned in my mail earlier this week, the result of a sampling activity is primarily a new (or transformed) sample. Actuation usually changes the value of some property so is probably closer to the observation/sensing world. 

Using OWL it is quite reasonable to model roles as classes. So I guess I would see sosa:Result as being a superclass of (at least) sosa:Sample and ssn:ObservationValue. 

-----Original Message-----
From: Armin Haller [mailto:armin.haller@anu.edu.au] 
Sent: Friday, 10 February, 2017 11:18
To: Le Phuoc, Danh <danh.lephuoc@tu-berlin.de>; Cox, Simon (L&W, Clayton) <Simon.Cox@csiro.au>; public-sdw-wg@w3.org; Kerry Taylor <kerry.taylor@anu.edu.au>; Krzysztof Janowicz <janowicz@ucsb.edu>; Maxime Lefrançois <maxime.lefrancois@emse.fr>
Subject: Re: hasResult / Sampling in SOSA & ISSUE-90

Thanks Danh for your detailed analysis of the Observation Value issue! I have added Option Numbers to the Wiki, to make it easier to refer to them.

I encourage everyone to look at the current proposals. As far as I can tell from previous discussions on the list several group members prefer Option 3, collapsing the property path in SOSA (and also in SSN) and not offering a hasValue relation. This also aligns to the decisions made in our best practices document. It also follows the Pareto principle.

I will watch the ensuing discussion and if there is a compromise emerging on the list, I will also try to put this issue for vote in our next meeting.

On 10/2/17, 2:07 am, "Le Phuoc, Danh" <danh.lephuoc@tu-berlin.de> wrote:

    Hi all,
    
    As requested from Armin to outline a solution for attach values to observations as a part of the solution mentioned in this issue: https://www.w3.org/2015/spatial/track/issues/90, I  created a Wiki page at https://www.w3.org/2015/spatial/wiki/Storing_Observation_Value with some figures to illustrate the possible patterns : collapsing or not collapsing ssn:SensorOutput and ssn:ObservationValue.
    
    I’m trying to collecting inputs/proposals from previous minutes to populate the wiki page but I got lost. I would appreciate if you could point me to your proposals in the minutes or even better put them directly to the Wiki so that I could consolidate them before the next call.
    
    Best,
    
    Danh 
    
    
    
    

Received on Friday, 10 February 2017 00:36:35 UTC

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