W3C

- DRAFT -

SSN XG

11 Aug 2010

Agenda

See also: IRC log

Attendees

Present
+1.937.775.aaaa, Payam, Arthur, laurent_lefort_cs, Andriy, krzysztof_j, michael_, kerry
Regrets
Simon, Kevin, Raul, Sumita, Cory, Luis, David
Chair
Laurent
Scribe
Payam

Contents


<laurent_lefort_cs> Previous: 2010-08-03 http://www.w3.org/2010/08/03-ssn-minutes.html

<laurent_lefort_cs> scribenick: Payam

Examples and How To

<laurent_lefort_cs> Andriy email last night with questions http://lists.w3.org/Archives/Public/public-xg-ssn/2010Aug/0005.html

<krzysztof_j> yes, i can give a very short summary

krzysztof to give a summary on DOLCHE work

<kerry> scribenick: payam

we are discussing Andriy questions

Andriy's example is a smart environment in a kitchen and he tries to use SSN ontology for an accelerometer sensor

<krzysztof_j> +q

questions are: http://lists.w3.org/Archives/Public/public-xg-ssn/2010Aug/0005.html

answer to question 1: Michael - there should be role defined for qualities in the ontology

Laurent, relationship between O&M and features we follow Simon's work on relating features to O&M

+q

Michael, there is no link from sensor to features

Andriy, how O&M is connected to sensors?

<laurent_lefort_cs> Laurent: check the nice doco at http://www.w3.org/2005/Incubator/ssn/wiki/SSN

Michael, in the original ontology there is link from O&M to sensor and in some versions there is a link from O&M to process - but seems there is an error there in some versions.

<krzysztof_j> sorry, i have only an usb surf stick

<krzysztof_j> i will write it down

<michael_> +q

<krzysztof_j> for the ontology pattern/dolce alignment the feature of interest is linked using the role hasProperty to an observableProperty and therefore to the observation

Payam, how this link between O&M data, feature and sensor description is maintained?

Michael, there should be a link from sensor to features of quality that it measures

Michael, there is a mistake in the current ontology and the link will be fixed

<Andriy> +q

<laurent_lefort_cs> Laurent: need to add a property measures => missing link (move the link from the process) o feature-of-interest

There will be a link from sensor to qualities that it measures

<Pramod> +q

<michael_> more like measures <= missing o observed-quality

<michael_> +q

Andriy, if the sensor is deployed and there is no measurement data, then how this feature can be accessed (if there is no O&M data)?

+q

Andriy, what is a feature?

Laurent, it can be an abstract entity, a geographical entity, ...

<laurent_lefort_cs> Example: a sensor measuring the vertical acceleration of a knife

<michael_> sorry, typing noise

<kerry> +q

<michael_> having measures >= missing o observed-quality doesn't mean that there is an indirection, it just means that anything that has been observed is something that the sensor can observe

Kerry, feature is an object that you take measure

<kerry> +q

Michael, qualities are qualities of features; qualities that a sensor measures can be defined. Another way is linking a deployment to a sensor (we havn't discussed the latter)

<laurent_lefort_cs> ACTION: Michael to add the missing link (and the role composition axioms manually) [recorded in http://www.w3.org/2010/08/11-ssn-minutes.html#action01]

<trackbot> Created ACTION-40 - Add the missing link (and the role composition axioms manually) [on Michael Compton - due 2010-08-18].

<michael_> measures >= missing o observed-quality

Michael, there will be a link from sensor to qualities, and there will be a link from qualities to O&M

it's clear to me now

<michael_> +q

Kerry, favouring deployment approach - features that sensor measures in deployment

<laurent_lefort_cs> ACTION: Michael to investigate or add link to feature at deployment [recorded in http://www.w3.org/2010/08/11-ssn-minutes.html#action02]

<trackbot> Created ACTION-41 - Investigate or add link to feature at deployment [on Michael Compton - due 2010-08-18].

http://lists.w3.org/Archives/Public/public-xg-ssn/2010Aug/0005.html

we now discuss question 3-

<michael_> +q

units of measurement - is there any recommended or it's totally up to user to select one

Laurent, there is a UOM ontology from a group called ... QMOS?

<laurent_lefort_cs> Laurent : OASIS wg QUOMOS Quantities and Units of Measure Ontology Standard

<laurent_lefort_cs> NASA ontology: QUDT qudt.org

<laurent_lefort_cs> OMG SysML-QUDV

Jano also sent one earlier today

http://lists.w3.org/Archives/Public/public-xg-ssn/2010Aug/0007.html

Laurent will send a UOM ontology to the group later

sorry, my mistake it judge based on name :)

<michael_> +q

<krzysztof_j> ack!

<laurent_lefort_cs> +q

Laurent, if we want to connect our work to others; we should leave some aspects to be linked to other existing data

<michael_> +q

question 4- how to express quality attributes and quality values

e.g. what is max, and min. values for frequency...

<laurent_lefort_cs> Laurent: see example http://www.w3.org/2005/Incubator/ssn/wiki/Modelling_of_Accuracy,_etc

question is: how to express ranges for values

<laurent_lefort_cs> Andriy asking about point 5

+q

<krzysztof_j> why not use proxy class

<michael_> proxy?

we don't have detailed attributes; so we can't really define rules at this stage

Jano, we can use proxy classes... let users define equivalent classes

we discuss point 6 later

<krzysztof_j> keep in mind that domain and range are very dangerous

point 6- domain/range restrictions of properties

<laurent_lefort_cs> ACTION: Michael to remove remaining range and domain [recorded in http://www.w3.org/2010/08/11-ssn-minutes.html#action03]

<trackbot> Created ACTION-42 - Remove remaining range and domain [on Michael Compton - due 2010-08-18].

<michael_> ok

I will try

<kerry> +q

how many weeks we have left?

<laurent_lefort_cs> 3 weeks

Jano, DOLCE work update

DOLCE Alignment

<michael_> agree

<kerry> +q

<krzysztof_j> andriy: to point 6 are you arguing for or against domain/range for the roles?

I will try to use SSN ontology and link it to linked-data; we use DBpedia SPARQL end-points so most of resources will be from DBpedia

<laurent_lefort_cs> Laurent: LODE http://linkedevents.org/ontology/

AOB

<krzysztof_j> would be great!

<Andriy> +q

<krzysztof_j> +q

<kerry> there was also a preference to avoid property explosion

Kerry, invited group members to participate and join the SSN workshop co -organised with Int. Semantic Web conference in Shanghai-

<kerry> +kerry

<michael_> not me

<krzysztof_j> we cannot edit the wiki?

<krzysztof_j> y

once XG is closed, we can't edit wiki

<krzysztof_j> uh!

<krzysztof_j> bye bye

<kerry> bye!

<michael_> bye

<Arthur> bye

bye

<laurent_lefort_cs> s/QMOS?/http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=quomos/

<laurent_lefort_cs> More units of measurement references here: http://www.w3.org/2005/Incubator/ssn/wiki/Agriculture_Meteorology_Sensor_Network#Generic_units_and_quantities

Summary of Action Items

[NEW] ACTION: Michael to add the missing link (and the role composition axioms manually) [recorded in http://www.w3.org/2010/08/11-ssn-minutes.html#action01]
[NEW] ACTION: Michael to investigate or add link to feature at deployment [recorded in http://www.w3.org/2010/08/11-ssn-minutes.html#action02]
[NEW] ACTION: Michael to remove remaining range and domain [recorded in http://www.w3.org/2010/08/11-ssn-minutes.html#action03]
 
[End of minutes]

Minutes formatted by David Booth's scribe.perl version 1.135 (CVS log)
$Date: 2010/08/11 21:33:10 $

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Succeeded: s/qulities/qualities/
Succeeded: s/measures <=/measures >=/
Succeeded: s/qulities/qualities/
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Succeeded: s/DOLCHE/DOLCE/
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Succeeded: s/Ra´┐Żl/Raul/
Succeeded: s/SSNX/SSN/
Succeeded: s/realtionship/relationship/
Succeeded: s/property measures <=/property measures =>/
Succeeded: s/measurment/measurement/
Succeeded: s/Quantity of Unit of Meausrement/Quantities and Units of Measure/
WARNING: Bad s/// command: s/QMOS?/http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=quomos/
Succeeded: s/QUDT/QUDT qudt.org/
Succeeded: s/frequancy/frequency/
Succeeded: s/prporty/property/
Found ScribeNick: Payam
Found ScribeNick: payam
Inferring Scribes: Payam
Default Present: +1.937.775.aaaa, Payam, Arthur, laurent_lefort_cs, Andriy, krzysztof_j, michael_, kerry
Present: +1.937.775.aaaa Payam Arthur laurent_lefort_cs Andriy krzysztof_j michael_ kerry
Regrets: Simon Kevin Raul Sumita Cory Luis David
Agenda: http://lists.w3.org/Archives/Public/public-xg-ssn/2010Aug/0004.html
Got date from IRC log name: 11 Aug 2010
Guessing minutes URL: http://www.w3.org/2010/08/11-ssn-minutes.html
People with action items: michael

WARNING: Input appears to use implicit continuation lines.
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