Dear all
i have followed the discussion on thesauraus and keyword search. I am doing some research on introduing Ontologies into GeoNetwork so that any search by a user also links to related concepts in the hierarchy.
I wanted to introduce this initially by hyperlinking keywords to their concepts in an ontology, is there a possibility of hyperlinking key words.
regards
Juliet Gwenzi
ITC
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________________________________
From: "Michael.Stegherr@anonymised.com" <Michael.Stegherr@anonymised.com>
To: francois-xavier.prunayre@anonymised.com; Fabien.Bachraty@anonymised.com
Cc: geonetwork-users@lists.sourceforge.net
Sent: Fri, 11 December, 2009 5:06:29 AM
Subject: Re: [GeoNetwork-users] Thesaurus name + keywords search
Hi François and Fabien,
I got the information from Jean's mail below and the discussion here on Nabble (http://n2.nabble.com/Question-about-the-thesaurus-use-tp2013978p2013978.html) that you did some work on using SKOS narrower and broader relations in the keywords search interface.
This would be of course a much better approach to implement hierarchy structures than my approach indexing the used thesauri in lucene and creating a 'pseudo' 2-level-hierarchy (level 1: thesaurus, level 2: keywords (flat structure)).
It would be nice, if you guys could inform me about your current status of work and what you have planned. Fabien did some modifications on LuceneSearcher.java in the discussion above that, but I think they didn't get into the trunk.
If it's already halfway there, I would be happy to assist you continuing that work.
Thanks a lot,
Michael
-----Original Message-----
From: ige31.jp@anonymised.com [mailto:ige31.jp@anonymised.com] On
Behalf Of Jean Pommier (IGE)
Sent: Thursday, 3 December 2009 5:49 PM
To: Stegherr, Michael (CESRE, Kensington)
Cc: geonetwork-users@lists.sourceforge.net;
geonetwork-devel@lists.sourceforge.net
Subject: Re: [GeoNetwork-users] Thesaurus name + keywords search
Michael,
The interface does not allow to edit broader and narrower
relations. That's why those relations are only usable, right
now, with external thesauruses, that you cannot edit inside
geonetwork.
Have a try using the joined GCMD extract as external
thesaurus. You will see it can be imported and you can
navigate in its hierarchy, using the thesaurus admin page.
Unluckily, it is not used in the search box, nor in the
metadata filling form. So, just as it is, it is not very
useful, I agree. I had tweaked something to restrict keywords
to be in the selected thesaurus, while filling the metadata
form, for a GN 2.2. But with no hierarchy, and have nothing
for the search box.
Maybe François Prunayre would have something closer to your
needs : they are working on thesaurus and keywords selection,
I believe.
Cheers
Jean
2009/12/3 <Michael.Stegherr@anonymised.com>
Hi Jean,
> \-\-\-\-\-Original Message\-\-\-\-\-
> From: ige31\.jp@anonymised\.com \[mailto:ige31.jp@anonymised.com] On
> Behalf Of Jean Pommier \(IGE\)
> Sent: Thursday, 3 December 2009 4:29 PM
> Subject: Re: \[GeoNetwork\-users\] Thesaurus name \+
keywords search
>
> I'm not really followed this thread but I believe what you
> need is already available using an external thesaurus. RDF
> allows a hierarchy (broader and narrower terms) that should
> fit to your needs.
Yeah, sorry for the longish email\. Thanks, I figured
that it could be done in this way.
> Unluckily, "local" thesauruses do not support this hierarchy,
> al least through the geonetwork's interface, but "external"
> \(imported\) thesauruses do\.
> Thus, you could either use an "external" thesaurus and
> create the hierarchy using a dedicated \(external\) tool, or
> improve the local thesauruses editing interface, knowing most
> functionalities should already be there\.
Can you please elaborate a bit on what functionality is
exactly available for thesauri with a hierarchy? Because I
thought that GeoNetwork doesn't support 'broader' and
'narrower' as it is not possible to _create_ these
relationships with the editing interface as you stated above.
Also it would be neat to have that hierarchy
represented somehow in the search box as I tried to show here:
https://www.seegrid.csiro.au/twiki/pub/Infosrvices/GeoNetworkG
eothermalRequirements/Keywords_improved.jpg
Anyway thanks for your reply\. I was wondering why no
one answered yet. Maybe I'm writing too much or confusing? 
Also I'm a bit confused about the use of the 'users'
and the 'devel' list. A lot of development discussion is done
on the users list, so I apologize for the crossposting. Maybe
someone can tell me, which list is the best for questions like this.
Cheers,
Michael
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