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Re: AW: [QB] ISSUE-32 relation to O&M

From: Dave Reynolds <dave.e.reynolds@gmail.com>
Date: Fri, 01 Mar 2013 12:04:56 +0000
Message-ID: <51309968.2040805@gmail.com>
To: Benedikt Kaempgen <kaempgen@fzi.de>
CC: Government Linked Data Working Group <public-gld-wg@w3.org>
On 01/03/13 10:13, Benedikt Kaempgen wrote:
> Hi,
>> Proposed approach: Address this via a working group Note.

Interesting thought.

The advantage of a separate note is that I'm more likely to be able to 
get people from the TC/211 community to review it if it is 
self-contained.  But maybe it is too short to justify a full Note.

> On a site note regarding a review of a refined specification: I am not in the office from 2nd until 6th of March.

OK, will aim to have a sufficiently stable version by 6th March for you 
to review.


> Best,
> Benedikt
> [1] <https://dvcs.w3.org/hg/gld/raw-file/default/data-cube-ucr/data-cube-ucr-20130227/index.html#VocabularyshoulddefinerelationshiptoISO19156ObservationsMeasurements>
> ________________________________________
> Von: Dave Reynolds [dave.e.reynolds@gmail.com]
> Gesendet: Donnerstag, 28. Februar 2013 18:55
> An: Government Linked Data Working Group
> Betreff: [QB] ISSUE-32 relation to O&M
> ISSUE-32 [1] concerns the relationship between Data Cube and ISO 19156
> Observations and Measurements.
> Proposed approach: Address this via a working group Note.
> [I had previously proposed a non-normative appendix to the spec, but on
> reflection making this a WG Note allows it to proceed to a separate
> timescale and is then not slowing down LC.]
> The note would roughly say ...
> o Data Cube can also be used for things like sensor measurements and
> forecasting, it is not limited to statistics.
> o A well known standard for measurement information is OGC Observations
> and Measuresments (O&M), ISO19156.
> o How does Data Cube relate to O&M?
> o Since Data Cube has a concept qb:Observation it might be tempting to
> think of this as being an Observation in the sense of O&M. In some cases
> that may be appropriate but not always.
> o O&M provides a representation for a how to describe the measurement
> process, the phenomenon being measured and the domain ("feature of
> interest") over which the observation takes place together with the
> result of the measurement. The result may be a simple value but can be,
> and often is, a set of values (Discrete Coverage) for example over time
> or over space or both.
> o Thus one approach to using both specifications together is to use Data
> Cube as a representation for O&M Discrete Coverage. O&M provides the
> contextual metadata describing the measurement process and measured
> phenomena. Data Cube provides the representation for the values which
> result from the observation, allowing us to give e.g. the time, location
> of each sample within the result. The two complement each other.
> Dave
> [1] http://www.w3.org/2011/gld/track/issues/32
Received on Friday, 1 March 2013 12:05:25 UTC

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