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Re: More detailed requirements

From: Peter Baumann <p.baumann@jacobs-university.de>
Date: Wed, 15 Apr 2015 12:13:52 +0200
Message-ID: <552E39E0.30900@jacobs-university.de>
To: Linda van den Brink <l.vandenbrink@geonovum.nl>, "SDW WG (public-sdw-wg@w3.org)" <public-sdw-wg@w3.org>
Dear Linda, all,

it's exciting to follow this discussion. Incidentally, OGC Big Geo Data
standards, WCS and WCPS, already have some answers, and their concepts are of
course independent from the syntactic wrapper, so they can be transposed into
RDF world as well.

Question: can we have, in parallel to the requirements collection, a page
describing the capabilities of existing standards so that a matching can be
accomplished by referencing? Might ease to find white spots on the map, as well
as reaping the benefits of existing accomplishments?

I can gladly start such a page, but as a newbie I am glad to get pointed to the
right place for doing that.

cheers,
Peter


On 04/15/2015 12:00 PM, Linda van den Brink wrote:
>
> Hi all,
>
>  
>
> As I mentioned in a separate email we (Geonovum) are currently reviewing the
> requirements and trying to make sense of them and add more detail to them.
>  This is a little bit ahead of the work of the SDWWG, but I think could be
> relevant to the question of how to structure the UCR document. As an example,
> please find below one requirement with our questions and more detailed
> sub-requirements.
>
>  
>
> 1.             It should be easy to find spatial data on the web
>
> 1.1           Non-experts should be able to find spatial data on the web
> through free-text searches
>
> 1.2           Spatial data on the web - datasets as well as single objects -
> should be findable through numerous ontologies/synonyms
>
> 1.3           Popular search engines should be able to find spatial data on
> the web (see requirement #5)
>
> 1.4           It should be possible to add semantics and structure to spatial
> data on the web (through existing mechanisms e.g. schema.org, Location Core)
>
> 1.5           Human/computer search mechanisms must be able to search for
> spatial entities/objects within datasets
>
> 1.6           There should be standardized search filters (e.g. within,
> nearby) for spatial data that are supported by popular search engines
>
> 1.7           Spatial objects should be findable through a (set of)
> basic/primitive spatial property e.g. centroid (see requirement #2).
>
> 1.8           Metadata should be inseparable from the data it describes
>
> 1.9           It should be possible for users to annotate (add tags and links
> to other datasets) the (meta)information they find (so that search is improved)
>
> 1.10         APIs and “smart” geo-services (e.g. WPS, WFS) should be (made)
> crawlable
>
>  
>
> Questions about this requirement:
>
> -          What are the problems of current data finding mechanisms? Is it
> lack of suitable technologies or lack of robust governance structures (i.e.
> high quality publishing process, robust maintenance process, etc.)? One
> problem could be that spatial data is published through mechanisms that are
> not in itself crawlable. E.g. WFS services or atom feeds (in non-standard
> formats). See also last bullet.
>
> -          Through what mechanism is the entity (human/machine) searching for
> data? Centralized registers? Decentralized (but linked) registers? Free-text
> searches? (in our opinion at least free text search)
>
> -          Which data/information properties are queried: keywords, extent,
> timespan, free-text fields, crowdsourced tags, location (using spatial
> operators), zoom level/resolution/level of detail, coordinate system, place
> name, license?
>
> -          How should APIs and “smart” geo-services (.e.g WFS) be indexed?
>
>  
>
> We have similar sub-requirements (and questions) about several of the other
> requirements, but have not quite gotten through the list. Should we put all
> this somewhere on the wiki?
>
>  
>
> Linda
>
> *______________________________________*
>
> *Geonovum*
>
> *Linda van den Brink*
>
> /Adviseur Geo-standaarden/
>
>  
>
> *a*: Barchman Wuytierslaan 10, 3818 LH Amersfoort * *
>
> *p*: Postbus 508, 3800 AM Amersfoort
>
> *t*:  + 31 (0)33 46041 00**
>
> *m*: + 31 (0)6 1355 57 92 **
>
> *e:  *l.vandenbrink@geonovum.nl <mailto:r.beltman@geonovum.nl>
>
> *i*:  www.geonovum.nl <http://www.geonovum.nl/>
>
>  
>
> --------------------------------------------------------------------------------

-- 
Dr. Peter Baumann
 - Professor of Computer Science, Jacobs University Bremen
   www.faculty.jacobs-university.de/pbaumann
   mail: p.baumann@jacobs-university.de
   tel: +49-421-200-3178, fax: +49-421-200-493178
 - Executive Director, rasdaman GmbH Bremen (HRB 26793)
   www.rasdaman.com, mail: baumann@rasdaman.com
   tel: 0800-rasdaman, fax: 0800-rasdafax, mobile: +49-173-5837882
"Si forte in alienas manus oberraverit hec peregrina epistola incertis ventis dimissa, sed Deo commendata, precamur ut ei reddatur cui soli destinata, nec preripiat quisquam non sibi parata." (mail disclaimer, AD 1083)
Received on Wednesday, 15 April 2015 10:14:22 UTC

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