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

OK why not, will vote 0 on this one to speed up things.

at least the definition of Sensing must be made clearer, I agree.

Maxime

Le mar. 11 avr. 2017 20:40, Krzysztof Janowicz <janowicz@ucsb.edu> a écrit :

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> 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
Webpage: http://geog.ucsb.edu/~jano/
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