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Re: Nine new questions for Actuation and Actuators. Was: Actuation and Actuators in SOSA (issue-91)

From: Krzysztof Janowicz <janowicz@ucsb.edu>
Date: Tue, 14 Feb 2017 13:09:47 -0800
To: Raúl García Castro <rgarcia@fi.upm.es>, public-sdw-wg@w3.org
Message-ID: <902fa71e-5df7-048c-1bf4-8968560b390e@ucsb.edu>
> This afternoon, when taking a look at the wiki, I didn't even have 
> sure what we were going to vote, since in the figure a lot of things 
> appear beyond the basic discussion such as the relationship of 
> actuators with platforms or the time-related properties. 

Just for clarification, everything that was not dashed was/is in SOSA 

On 02/14/2017 12:32 PM, Raúl García Castro wrote:
> Dear Krzysztof,
> I have to agree and disagree with you.
> I also think that we must take decisions one by one, and that is what 
> Maxime is trying to do by identifying the atomic decisions we have to 
> make.
> This afternoon, when taking a look at the wiki, I didn't even have 
> sure what we were going to vote, since in the figure a lot of things 
> appear beyond the basic discussion such as the relationship of 
> actuators with platforms or the time-related properties.
> Besides, being SOSA the core module of SSN, it is a need to put any 
> decision in the broad context of SSN (even if taking decisions on SSN 
> come later in the backlog.
> Kind regards,
> El 14/2/17 a las 20:50, Krzysztof Janowicz escribió:
>> Maxime,
>> Thanks a LOT for doing all this, but you are moving a bit too fast :-).
>> The idea was to discuss and take decisions step-by-step, if we combine
>> different topics into larger and larger bundles, it will be difficult to
>> make decisions. Let's keep the individual issues and proposed solutions
>> as atomic as possible :-). See also my mail about feature creep. The
>> wiki page was only designed for the SOSA part. We can (and probably
>> should) add more on actuators and actuation into SSN, but we should not
>> try to add all of this into SOSA.
>> Cheers,
>> Jano
>> On 02/14/2017 11:41 AM, Maxime Lefrançois wrote:
>>> Hi,
>>> I added some content to the wiki
>>> page 
>>> <https://www.w3.org/2015/spatial/wiki/Actuation>https://www.w3.org/2015/spatial/wiki/Actuation 
>>> :
>>> nine questions and the currently proposed options. I think we can vote
>>> for some today, but there is obviously some things one need to agree
>>> on quite urgently.
>>> Question 1: ok for a complete actuator/actuation/xxxProperty model in
>>> sosa? ok to reflect this in snn?
>>> Question 2: naming of xxxProperty
>>> Question 3: naming of the link between Actuation and xxxProperty
>>> Question 4: naming of invoked/invokedBy vs madeObservation/??
>>> Question 5: Result and Command ?
>>> Question 6: phenomenonTime and resultTime
>>> Question 7: axioms in SSN
>>> Question 8: measurement properties in SSN
>>> Question 9: operating properties in SSN
>>> For now there is currently no turtle snippet or pull request for each
>>> of the proposed options, so I believe we can only vote for Question 1
>>> today.
>>> Kind regards,
>>> Maxime
>>> Le mar. 14 févr. 2017 à 20:01, Maxime Lefrançois
>>> <maxime.lefrancois@emse.fr <mailto:maxime.lefrancois@emse.fr>> a 
>>> écrit :
>>>     Hi,
>>>     I added some answers to Kerry's questions in the wiki page
>>>     https://www.w3.org/2015/spatial/wiki/Actuation
>>>     These are copied here:
>>>     /Kerry: can we reconsider the names please? "actsOnProperty" (from
>>>     SEAS) instead of "actuatedProperty" (does not follow active
>>>     property naming convention, is not English)/
>>>     /- Maxime: +1 for "sosa:actsOnProperty/sosa:isActedOnBy" and
>>>     "sosa:observesProperty/sosa:isObservedBy", for the sake of having
>>>     consistent naming conventions./
>>>     /Kerry: ActuableProperty is also not English. What is meant here?
>>>     Perhaps an explanation of the concept would help to choose the
>>>     term. SEAS uses "Property" which suits me, but I guess we are
>>>     stuck in a pattern since we have "ObservableProperty elsewhere.
>>>     SAN uses ImpactedProperty which is certainly better, and that
>>>     would also suggest actuatedProperty could be 'impacts'. Or, better
>>>     still (becuase impacts is too forceful, in general) how about
>>>     "affects" and "AffectedProperty"/
>>>     /- Maxime: related emails in the
>>>     list: 
>>> https://lists.w3.org/Archives/Public/public-sdw-wg/2017Feb/0335.html<https://lists.w3.org/Archives/Public/public-sdw-wg/2017Feb/0338.html>https://lists.w3.org/Archives/Public/public-sdw-wg/2017Feb/0338.html 
>>> https://lists.w3.org/Archives/Public/public-sdw-wg/2017Feb/0339.html ./
>>>     /- Maxime: propose: "sosa:ActionableProperty"/
>>>     /Kerry: What is a Phenomenontime in this context? As distinct from
>>>     a ResultTime? Why do we need it?/
>>>     /- Maxime: AFAIK, resultTime can be later than phenomenonTime. As
>>>     an example in the spec, maybe we could use the example of an
>>>     astronomical telescope that outputs today some phenomenon that
>>>     occurred many years ago?/
>>>     /Kerry: What is the impact on SSN?/
>>>     /- Maxime: should we duplicate any axiom that exists for
>>>     Observation and adapt it for Actuation?/
>>>     /- Maxime: should we decide which of the MeasurementProperty can
>>>     also apply to Actuators? As a first guess, I would say Accuracy,
>>>     ActuationLimit, Drift, Frequency, Latency, Precision, Resolution,
>>>     ResponseTime, all apply to Actuation/
>>>     /- Maxime: I believe all of the OperatingProperties also apply to
>>>     Actuators./
>>>     /
>>>     /
>>>     /
>>>     /
>>>     Best,
>>>     Maxime
>>>     Le lun. 13 févr. 2017 à 10:55, Maxime Lefrançois
>>>     <maxime.lefrancois@emse.fr <mailto:maxime.lefrancois@emse.fr>> a
>>>     écrit :
>>>         Dear Simon, all,
>>>         From my side, it's 'yes' to your second question.
>>>          - if requirement 5.27 [1]  is sufficient to motivate the
>>>         addition of actuator/actuation, then requirement 5.16 may be
>>>         sufficient to motivate the addition of the Samping side of the
>>>         system.
>>>          - as far as I know, not all of GoodRelations has been
>>>         swallowed by schema.org <http://schema.org> anyways, and this
>>>         is managed by the W3C Schema.org Community Group [2]. So it's
>>>         not a 'all or nothing' matter there. If Samping is is SOSA and
>>>         the schema.org <http://schema.org> community doesn't want
>>>         sampling, then it won't make them reject Actuation.
>>>         +1 for Simon to create a wiki page with turtle snippets that
>>>         explain your proposal, (potentially multiple options) ?
>>>         @Jano, could you also write turtle snippets for your proposed
>>>         alternative in the Wiki ?
>>>         Kind regards,
>>>         Maxime
>>>         [1] - https://www.w3.org/TR/sdw-ucr/#ExSituSampling
>>>         [2] - https://github.com/schemaorg/schemaorg
>>>         Le lun. 13 févr. 2017 à 08:14, Krzysztof Janowicz
>>> <<mailto:jano@geog.ucsb.edu>jano@geog.ucsb.edu> a écrit :
>>>             Hi Simon, Armin, all,
>>>             I fully agree with keeping SOSA as minimalistic as
>>>             possible. This is a key design goal. The changes I
>>>             proposed are a reaction to issue-91 and other change
>>>             requests and they are minimal in nature by only
>>>             introducing one class and one property. They are also in
>>>             line with other work on actuators. The fact, that such
>>>             minimal changes were sufficient to address the outstanding
>>>             issues shows that by now SOSA seems to stabilize and is
>>>             well designed. One could even fix these issues by an even
>>>             more minimalistic change, I will implement this tomorrow
>>>             as alternative.
>>>             As far as sampling is concerned, I absolutely agree that
>>>             Sample needs to be in SOSA. Whether it is of equal
>>>             importance compared to observations and actuations is
>>>             difficult to say. Simon, may I suggest that you create a
>>>             similar example for sampling? If all we need would be just
>>>             one or two more classes, then I would support to add it.
>>>             Otherwise, we could leave Sample in there as stub and add
>>>             more axioms to the new SSN.
>>>             More generally speaking (and leaving the sampling issue
>>>             aside), my big concern is that we will start doing this
>>>             for 10 more cases, thereby ruining the entire idea of a
>>>             lightweight SOSA. To be very clear about this, I created
>>>             this proposal because I was tasked to do so. I believe
>>>             that SOSA will be fine with said changes (as they are
>>>             minimal) to better support actuation but that SOSA would
>>>             also remain valuable without these changes. If this opens
>>>             the flood gates to tons of change requests for new classes
>>>             and properties, I would strongly prefer to leave SOSA as
>>>             is. SOSA was never designed to capture all use cases and
>>>             all details in a balanced way as this is the task of the 
>>> SSN.
>>>             Cheers,
>>>             Jano
>>>             On Sun, Feb 12, 2017 at 10:11 PM, Armin Haller
>>> <<mailto:armin.haller@anu.edu.au>armin.haller@anu.edu.au>
>>>             wrote:
>>>                 I will raise the question of Sampling in the core in
>>>                 the discussion around Actuation in our next telco.
>>>                 In terms of Actuation we have several use cases that
>>>                 require actuation:
>>> <https://www.w3.org/TR/sdw-ucr/#ModelActuation>https://www.w3.org/TR/sdw-ucr/#ModelActuation
>>>                 I believe we need to have a strong argument why to not
>>>                 include it in the core.
>>>                 Personally, I think Actuation should be in SOSA as
>>>                 many IoT applications on the Web will include
>>>                 Actuation. Even many of the IoT home devices available
>>>                 in Apple Stores include actuation (turning light on,
>>>                 recording your favourite show over Siri, Cortana,
>>>                 Amazon Echo, changing the thermostat etc.).
>>>                 On 13/2/17, 11:50 am, "Simon.Cox@csiro.au"
>>>                 <Simon.Cox@csiro.au> wrote:
>>>                     Thanks Jano.
>>>                     The proposal is exactly in line with expectations.
>>>                     However, I am concerned that we should clarify the
>>>                 scope (and size) of SOSA. Specifically,
>>>                     1. do the requirements for SOSA include a basic
>>>                 actuation model?
>>>                     If that is the case then
>>>                     2. should the Sampling side of the system also
>>>                 need to be fleshed out?
>>>                     I could make a proposal for this, but had been
>>>                 holding back because I had assumed that was probably
>>>                 out of scope for most SOSA users, and should rather be
>>>                 the subject of a vertical (richer axiomatization) +
>>>                 horizontal (additional scope) extension to SOSA.
>>>                     In developing SOSA until now we have generally
>>>                 leaned towards parsimony - lets minimise the number of
>>>                 concepts in SOSA to a core that might be useful to
>>>                 schema.org <http://schema.org> folk.
>>>                     BTW - I'm OK with the answers to these two
>>>                 questions being 1. Yes, and 2. No, but wanted to put
>>>                 the issue on the table so we are all clear about what
>>>                 is being ruled in, and what is out.
>>>                     And just in case there is any question, even if it
>>>                 is "2. No", Sample still belongs in SOSA, as it is
>>>                 critical for many (most?) observations.
>>>                     It would just be sampling and sample preparation
>>>                 that would be delegated elsewhere.
>>>                     Simon
>>>                     -----Original Message-----
>>>                     From: Krzysztof Janowicz
>>> [mailto:<mailto:janowicz@ucsb.edu>janowicz@ucsb.edu]
>>>                     Sent: Monday, 13 February, 2017 10:50
>>>                     To: Cox, Simon (L&W, Clayton)
>>>                 <Simon.Cox@csiro.au>;
>>> <mailto:armin.haller@anu.edu.au>armin.haller@anu.edu.au;
>>>                 public-sdw-wg@w3.org <mailto:public-sdw-wg@w3.org>
>>>                     Subject: Actuation and Actuators in SOSA (issue-91)
>>>                     Dear all,
>>>                     I added a wiki pages that shows a concept map for
>>>                 the changes to be made on the Actuator and Actuation
>>>                 side of SOSA. The proposed changes address some
>>>                 shortcomings of the current model and are also in
>>>                 preparation for a deeper axiomatization in SSN.
>>>                     There are two major (but in no sense dramatic
>>>                 changes) to SOSA, namely a proposal to add the
>>>                 SOSA:actuatedProperty role and a class called
>>>                 SOSA:ActuableProperty.  These are in line with
>>>                 previous work and requests made on this list.
>>>                     I hope you can look at the concept map and the
>>>                 notes on the wiki page as I hope we can get this
>>>                 resolved during our next teleconference. Please keep
>>>                 in mind that everything that is not shown in a dashed
>>>                 style is already part of SOSA.
>>> https://www.w3.org/2015/spatial/wiki/Actuation_in_SOSA
>>>                     Best,
>>>                     Jano
>> -- 
>> 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
Received on Tuesday, 14 February 2017 21:10:24 UTC

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