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Re: Sensing in SSN, Was: Agenda SSN meeting this week - 11-04-17 20:00 - 22:00 UTC

From: Krzysztof Janowicz <janowicz@ucsb.edu>
Date: Tue, 11 Apr 2017 11:40:37 -0700
To: Maxime Lefrançois <maxime.lefrancois@emse.fr>, Armin Haller <armin.haller@anu.edu.au>, "public-sdw-wg@w3.org" <public-sdw-wg@w3.org>
Message-ID: <00138792-ca93-4933-a1de-2d68584ed820@ucsb.edu>
On 04/11/2017 03:14 AM, Maxime Lefrançois wrote:
> Dear Krzystof, all,
>
>
> I read your explanations at 
> https://www.w3.org/2015/spatial/wiki/Sensing_SSN , but I don't 
> understand exactly what you suggest, and the reasons why you would do 
> that.
>
>
> About the Why:
>
> If I understand well, you say that the users of the old SSN ontology 
> were confusing  oldssn:Sensing (which already was a sub class of 
> oldssn:Process), with oldssn:Observation
>
> Can you bring some evidence for this statement in existing papers or 
> datasets?.

I don't have time to do so for today's meeting but I provided evidence 
from our own SSN report (see the wiki page).

In a nutshell, the argument goes like this: The name sensing is 
confusing. If it is used as activity then the usage was/is wrong and 
would correspond to the new meaning of Observation in SOSA/new-SSN. If 
it was used in the sense of a method/description, then we lost part of 
its axiomatization due to removing DUL. This will rather add to the 
confusion as there will be less axioms restricting the interpretation of 
the term. Also, we want to avoid adding SamplingProcedure, 
ActuationProcedure, and so forth, and thus I proposed to just talk about 
Procedure and nothing more specific.

Let us discuss the rest later today.

> "create neither sosa:Sensing nor ssn:Sensing, just deprecate the old 
> term."

Yes.


Thanks for your feedback.
Jano

>
> About the How:
>
> if I understand well, what you suggest could be simply implemented in 
> ssnx as follows:
>
> oldssn:Sensing a owl:Class ;
>   rdfs:label "Sensing"@en ;
>   rdfs:comment "Sensing is a process that results in the estimation, 
> or calculation, of the value of a phenomenon."@en ;
>   rdfs:subClassOf oldssn:Process ; # this was in the old SSN
>   rdfs:subClassOf sosa:Procedure ; # this is the new part
>   rdfs:seeAlso 
> "http://www.w3.org/2005/Incubator/ssn/wiki/SSN_Skeleton#Skeleton" ;
>   owl:deprecated true ; # this is the new part
>   rdfs:isDefinedBy <http://purl.oclc.org/NET/ssnx/ssn> .
>
> Yet:
>  1. all of the terms defined in the oldssn: namespace in ssnx.ttl are 
> deprecated anyways;
>  2. oldssn:Process is already asserted to be equivalent to sosa:Procedure.
>
> So at the end of the day, what you suggest can be summarized as 
> follows, isn't it?
>
> "create neither sosa:Sensing nor ssn:Sensing, just deprecate the old 
> term."
>
>
> Is there any other option you can suggest, or should we just vote +1 
> or -1 on this one?
>
>
> Best,
> Maxime
>
>
> Le mar. 11 avr. 2017 à 07:19, Krzysztof Janowicz <janowicz@ucsb.edu 
> <mailto:janowicz@ucsb.edu>> a écrit :
>
>     On 04/10/2017 12:44 AM, Armin Haller wrote:
>>
>>     *This week we will again have a two-hour meeting, but with only
>>     one part as there are no SOSA specific issues left.*
>>
>>     **
>>
>>     *Agenda for SSN-focused meeting 11 April 2017 20:00 - 22:00 UTC
>>     <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20170411T20&ah=1&msg=SSN%20Call>*
>>
>>      1. Progress on ACTION-296
>>         <https://www.w3.org/2015/spatial/track/actions/296> to
>>         address role of device class as of ISSUE-153
>>         <https://www.w3.org/2015/spatial/track/issues/153> and
>>         propose a solution
>>      2. Progress on ACTION-302
>>         <https://www.w3.org/2015/spatial/track/actions/302> for
>>         options in regards to Sensing class in SSN new
>>
>
>     --> A discussion starter:
>     https://www.w3.org/2015/spatial/wiki/Sensing_SSN
>
>
>     -- 
>     Krzysztof Janowicz
>
>     Geography Department, University of California, Santa Barbara
>     4830 Ellison Hall, Santa Barbara, CA 93106-4060
>
>     Email:jano@geog.ucsb.edu <mailto:jano@geog.ucsb.edu>
>     Webpage:http://geog.ucsb.edu/~jano/ <http://geog.ucsb.edu/%7Ejano/>
>     Semantic Web Journal:http://www.semantic-web-journal.net
>


-- 
Krzysztof Janowicz

Geography Department, University of California, Santa Barbara
4830 Ellison Hall, Santa Barbara, CA 93106-4060

Email: jano@geog.ucsb.edu
Webpage: http://geog.ucsb.edu/~jano/
Semantic Web Journal: http://www.semantic-web-journal.net
Received on Tuesday, 11 April 2017 18:41:14 UTC

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