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AW: Cool URIs for the Semantic Web

From: Svensson, Lars <l.svensson@d-nb.de>
Date: Tue, 6 Mar 2007 15:28:00 +0100
Message-ID: <6DA97EFF2763174B8BDC409CA197298404C30545@dbf-ex.AD.DDB.DE>
To: <g.tummarello@gmail.com>, "Leo Sauermann" <leo.sauermann@dfki.de>
Cc: <semantic-web@w3.org>, Hüther, Katja <K.Huether@d-nb.de>, "Hengel-Dittrich, Christina" <C.Hengel@d-nb.de>, "Frodl, Christine" <C.Frodl@d-nb.de>

In litteris suis de Dienstag, 6. März 2007 13:55, semantic-web-request@w3.org <>scripsit:

Hi all,

> In my understanding you're creating an overview of several
> methodology so the idea is a fair comparison between
> approaches. If that is the purpose i object that your
> treatment of the "other" methods is way too biased, as a
> result of you chosing basic design principles which are
> arguable at least.
> I personally see absolutely nothing wrong with identifiers
> such as ISBN:123-123-1233 or MD5: 998798798 or
> TAG:giovanni.tummarello@deri.org/mycat/CHICCA.

Well, it depends on what exactly you want your identifiers to do. Of course you can have them as mere identifiers, but as soon as you need some way to look up further information on that resource, you'll need some kind of resolving service anyway...
> Why should i better use an amazon page for a book than the
> simple ISBN (then you chose you preferred store?

There are some issues with ISBN, namely that quite a lot of publishers reuse ISBNs at their liberty. Cf. http://worldcat.org/search?q=isbn%3A3811224026&qt=advanced or http://worldcat.org/search?q=isbn%3A3720524612&qt=results_page so those are pretty useless as identifiers anyway...

> Why sohuld i
> use a URL to indicate me, then i might loose the DNS domain
> for some reasona and have a spammer putting immoral binaries
> as a resolution of my "identifier".

You might just as well lose a subspace of info: or any other uri space, depending on who manages the space.
> In fact i see many obvious advantages of these, in terms of
> stability, neutrality, maintainance, etc.
> but in SOME CASES. In some others its ok to mix identifiers
> with reppresentations.
> there is, in my view, not a single way to do identifier but
> one has to see per domain and the choices are more than what
> are written in that document.

True, but we want to build a semantic _WEB_ so HTTP-URIs do seem a natural choice.
> To conclude.. what about making it a wiki page? If not, what
> about making it a blog post so there can be hints of
> counterargument in a world readable way? :-)


> Related issue: There might be some space for spontaneous
> discussions/lightening talks at the W3C workshop I3 Identity,
> Identifiers, Identification  http://okkam.dit.unitn.it/i3/ ,
> if anyone would like to book a space for it please let me
> know, i cant guarantee at this time (the program has not been
> finalized) but we'll likely reserve some space about it

I probably won't make it to Banff (especially since the cfp is closed...) but there was quite some discussion on this matter at the ICSD 2007 in Bangalore, so it seems an upcoming topic.

Best regards


> On 3/5/07, Leo Sauermann < leo.sauermann@dfki.de
> <mailto:leo.sauermann@dfki.de> > wrote:
> 	During practical RDF projects, one big challenge is
> always how to choose good URIs for your resources. The RDF
> standards say very little about this topic. There are some
> best practices and helpful recommendations, but they are
> scattered all over the web. Creating "cool URIs for the
> semantic web" is hard.
> 	Richard Cyganiak, Max Völkel and Leo Sauermann have
> written an article about how to choose cool URIs, filled with
> practical knowledge and background information about the
> problem and solutions. We have collected what we have learned
> during projects such as Semantic MediaWiki, dbpedia, D2R
> Server, Gnowsis, and Nepomuk. We hope that this article is a
> help for you or your students to get started programming
> Semantic Web applications.
> 	Read it
> 	*
> http://www.dfki.uni-kl.de/~sauermann/2006/11/cooluris/
> <http://www.dfki.uni-kl.de/%7Esauermann/2006/11/cooluris/>  (html) 	*
> http://www.dfki.uni-kl.de/dfkidok/publications/TM/07/01/tm-07-0
> 1.pdf (PDF version)
> 	Abstract
> 	The Resource Description Framework RDF allows you to
> describe web documents and resources from the real
> world-people, organisations, things-in a computer-processable
> way. Publishing such descriptions on the web creates the
> semantic web. URIs are very important as the link between RDF
> and the web. This article presents guidelines for their
> effective use. We discuss two strategies, called 303 URIs and
> hash URIs. We give pointers to several web sites that use
> these solutions, and briefly discuss why several other
> proposals have problems.
> 	Notice: we have written the article late last year, but
> published it this year. You can republish or copy this article
> under the Creative Commons Attribution-NoDerivs 2.0 License
> <http://creativecommons.org/licenses/by-nd/2.0/> .
> 	--
> 	____________________________________________________
> 	DI Leo Sauermann       http://www.dfki.de/~sauermann
> 	<http://www.dfki.de/%7Esauermann>
> 	Deutsches Forschungszentrum fuer
> 	Kuenstliche Intelligenz DFKI GmbH
> 	Trippstadter Strasse 122
> 	P.O. Box 2080           Fon:
> 	+49 631 20575-116
> 	D-67663 Kaiserslautern  Fax:   +49 631 20575-102
> 	Germany                 Mail:  leo.sauermann@dfki.de
> 	Geschaeftsfuehrung:
> 	Prof.Dr.Dr.h.c.mult. Wolfgang Wahlster (Vorsitzender) 	Dr. Walter
> 	Olthoff Vorsitzender des Aufsichtsrats:
> 	Prof. Dr. h.c. Hans A. Aukes
> 	Amtsgericht Kaiserslautern, HRB 2313
> 	____________________________________________________

Dr. Lars G. Svensson
Deutsche Nationalbibliothek
Adickesallee 1
60322 Frankfurt
Received on Tuesday, 6 March 2007 14:28:25 UTC

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