W3C home > Mailing lists > Public > public-sdw-wg@w3.org > April 2015

Re: Requirements from UC-19

From: Frans Knibbe <frans.knibbe@geodan.nl>
Date: Wed, 29 Apr 2015 14:49:24 +0200
Message-ID: <CAFVDz40S_MZsDpiT08wnSzpQe7m8L_iUKUZMfgp4TRkNFiGq=g@mail.gmail.com>
To: "Svensson, Lars" <L.Svensson@dnb.de>, "public-sdw-wg@w3.org" <public-sdw-wg@w3.org>
Lars, thank you for your input. Some comments:

About the proposed requirement* "**It must be possible to state that the
spatial coverage is inexact ("north of", "close to", "coordinates are
approximate")"*: We have the Spatial Metadata
<http://w3c.github.io/sdw/UseCases/SDWUseCasesAndRequirements.html#SpatialMetadata>
requirement. One of the spatial characteristics is spatial resolution. For
geometric data (expressed in coordinates), spatial resolution could have a
straightforward expression, which would be a measure of exactness. Would
that cover the "coordinates are approximate" bit? I think "North of" is
actually rather exact, it indicates a well defined area. "Close to" is yet
another matter...without any other context the expression seems
meaningless. Would it be possible to give an example that can show that it
would be beneficial to have some kind of standardisation for "close to"?

As for time, I do not yet see a requirement like the Spatial Metadata
<http://w3c.github.io/sdw/UseCases/SDWUseCasesAndRequirements.html#SpatialMetadata>
requirement
for temporal data, but I think there could be. I can think of temporal
extent, temporal resolution and temporal reference systems. Well, the
temporal reference system is a separate requirement in the spreadsheet
(column H).

Greetings,
Frans





2015-04-21 18:17 GMT+02:00 Svensson, Lars <L.Svensson@dnb.de>:

> Dear Ed and Frans,
>
> For my Use Case 19 (Publishing Cultural Heritage Data), I identified the
> following existing and new requirements:
>
> - Best Practice
> -- existing
>
> 1) There should be a common encoding/serialisation for spatial data as RDF
> 2) It should be possible to validate data
>
> - Coverage
> -- existing
>
> 1) Temporal context
> 2) geospatial alignment (not sure about this one, what it means is the
> alignment of a named entity to its geospatial feature)
>
> -- new
>
> 1) It must be possible to state that the spatial coverage is inexact
> ("north of", "close to", "coordinates are approximate")
>
> - Time
> -- existing
>
> 1) temporal granularity flexibility
> 2) temporal vagueness [fuzzy dates/periods]
> 3) temporal reasoning and relations (xsd formats)
> 4) nominal temporal references [e. g. " Vormärz", "La Tène period"]
>
> Can you please insert those into the spreadsheet?
>
> Thanks,
>
> Lars
>
> *** Lesen. Hören. Wissen. Deutsche Nationalbibliothek ***
> --
> Dr. Lars G. Svensson
> Deutsche Nationalbibliothek
> Informationsinfrastruktur und Bestanderhaltung
> Adickesallee 1
> D-60322 Frankfurt am Main
> Telefon: +49-69-1525-1752
> Telefax: +49-69-1525-1799
> mailto:l.svensson@dnb.de
> http://www.dnb.de
>
>
>


-- 
Frans Knibbe
Geodan
President Kennedylaan 1
1079 MB Amsterdam (NL)

T +31 (0)20 - 5711 347
E frans.knibbe@geodan.nl
www.geodan.nl
disclaimer <http://www.geodan.nl/disclaimer>
Received on Wednesday, 29 April 2015 12:55:59 UTC

This archive was generated by hypermail 2.4.0 : Thursday, 24 March 2022 20:31:16 UTC