Agenda

1. Logistics: Welcome, Minutes Review, Agenda Review, Chat Room
2. MMI and W3C SSN integration?
3. Updates to the ontology
4. Review of Device Ontology instantiation exercises
5. End Logistics: Action items, Next meeting, Attendees

Minutes

Logistics: Welcome, Minutes Review, Agenda Review, Etherpad

Etherpad

Minutes review. No comments

Agenda review. MMI/W3c topic added.

MMI OntDev and W3C SSN

• Having the SSN ontology registered at MMI ORR is a very significant step for the collaboration
• Next, need to determine how to collaborate more closely, perhaps merge the ontologies, integrate them, modularize and work on different concerns?
• More in general, how to leverage/integrate the various efforts, eg., SensorML, SONET/OBOE, etc.
• A next step is to review the SSN ontology (a new version will be submitted soon) and provide comments/feedback. Carlos will be looking at this.

Updates to the ontology

Added:

+ class ValueType with the following properties:

• hasUnitsOfMeasure (label: uom) string (functional)
• hasDatatype (label: datatype): enumeration [INT, FLOAT, DATE, TIME, DATE_TIME] (functional)

ValueType was added to factor out the specification of a type and units of measure for individual values as well as for value ranges (see below).

+ class Range with the following properties:

• hasValueType (label: type) ValueType (functional)
• hasMinimumRangeValue (label: minimum) : string (functional)
• hasMaximumRangeValue (label: maximum) : string (functional)

Modified:

The following classes were modified to use a new object property range to indicate the associated Range, if any. See diagram below.

• OperationalRange: now with the new object property range: Range.
• MeasurementCapability: Note that it has a value and a type for that value. But it also has a range. A single MeasurementCapability instance will normally only have one of value (and its type) and range specified. Is this an appropriate way to capture this?
• EnvironmentalToleranceLimit: now with the new object property range: Range.
  NOTE: Recalling that a Range instantiation does not necessarily have to have both bounds indicated, subclasses MinimumPressure, MaximumPressure, MinimumTemperature, MaximumTemperature should be removed and instead have the subclasses PressureRange, TemperatureRange. This change has not been made yet.

Note: There are some other classes that can/should be updated accordingly: Dimension, Weight.

Updated ontology: http://mmisw.org/ont/mmi/20100105T022137/device

Diagram (click to open in new window):

Review of Device Ontology instantiation exercises

• Not discussed today.

End Logistics: Action items, Attendees, Next meeting

Action Items

http://code.google.com/p/mmisw/issues/list?can=2&q=label=OntDev

Attendees:

• Bruce Andrews 
• John Graybeal 
• Luis Bermudez 
• Carlos Rueda

Regrets: Bob Arko, Bob Morris, Nan Galbraith

Next Telecon Time

Next telecon is Tuesday 2010-01-19 at 1600 UTC.