Re: The SSN requirement 'Reference external vocabularies'

2015-06-05 19:07 GMT+02:00 Joshua Lieberman <jlieberman@tumblingwalls.com>:

> We have had some discussion of linking and referencing vocabularies at
> this week’s OGC TC meeting. My sense is that the requirement is both
> important and spatial. First of all, we are talking about requirements for
> construction of a spatial vocabulary (SSN) so how we go about it is a a
> reasonable concern. Beyond this, however, there is need for specific types
> of references to external vocabularies in order to present a complete
> spatiotemporal sensing theory without doing too much re-invention. There
> are conflicting theories in involved in many upper ontologies from which
> SSN and other spatial ontologies might derive, so choice of inheritance is
> a concern. Definition of mapping relationships rather than inheritance
> might be more appropriate.
>
> Then are there many choices of external vocabularies for other aspects of
> sensing, such as units, CRS’s, phenomena, etc. There is danger of
> brittleness in making hard references to specific vocabularies that play
> these roles, but they are needed for a complete theory. What seems as if it
> might be more resilient is to be able to create logically consistent stubs
> or placeholders that define the role an external vocabulary will play in a
> specification such as SSN without making the vocabulary dependent on a
> specific vocabulary. To the extent that such vocabularies need to be
> consistent with SSN theory, the construction of such reference objects is
> explicitly spatial.
>

Josh,

Thank you for your thoughts. Am I right in understanding that you are
saying that SSN should not be a closed model with regard to spatial
information? Is this a known weakness in the current SSN?

Perhaps it would help if we make the spatial angle more clear in the
requirment, for example change
 "It should be possible to refer to externally-managed controlled
vocabularies."
to
 "It should be possible to refer to externally-managed controlled
vocabularies for expressing spatial data."

Regards,
Frans









>
> -Josh
>
> Joshua Lieberman, Ph.D.
> Principal
> Tumbling Walls
> jlieberman*tumblingwalls.com
> +1 617 431 6431
>
> On Jun 5, 2015, at 9:48 AM, Frans Knibbe <frans.knibbe@geodan.nl> wrote:
>
> Hello all,
>
> The tracker does not yet send notifications of new issues to this list, so
> this is a manual notification that I have created ISSUE-20
> <https://www.w3.org/2015/spatial/track/issues/20>.
>
> This thread can be used to discuss the issue.
>
>
> Greetings,
> Frans
>
> --
> Frans Knibbe
> Geodan
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