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Re: ACTION-10 Possible contribution to the topic from DANS

From: Christophe Guéret <christophe.gueret@dans.knaw.nl>
Date: Tue, 8 Apr 2014 14:04:19 +0200
Message-ID: <CABP9CAH2ZUU3K6OhkQLLkzL7=VhmDHfto9j5zePD7AavaKsu5g@mail.gmail.com>
To: "Manuel.CARRASCO-BENITEZ@ec.europa.eu" <Manuel.CARRASCO-BENITEZ@ec.europa.eu>
CC: Christophe Gueret <christophe.gueret@dans.knaw.nl>, "public-dwbp-wg@w3.org" <public-dwbp-wg@w3.org>
Hoi Tomas,

The rationale:
>   - Simple URIs  - shortening  services are a symptom of bad URIs
>
+1 though machines don't care as much about bloated URIs as we do ;-)


>  - Previous versions - related to time or not
>
Yes, there could be anything that differentiate two instances of the
(changed) same thing


>  - Works with "file" and "http" - see MED
> https://joinup.ec.europa.eu/site/med
>
> URI examples
>    local
>       file:///foo                                       # latest
>       file:///foo3                                     # version 3
>
>    network
>       http://example.com/foo
>       http://example.com/foo3
>
But then it's rather hard to see that 3 is the third version of "foo".
E.g. is http://nl.dbpedia.org/resource/Ww2 the version 2 of
http://nl.dbpedia.org/resource/Ww ?

There are also some organisations that use the date as versions, with for
example http://www.w3.org/TR/vocab-data-cube/ for the latest version of
something and http://www.w3.org/TR/2014/REC-vocab-data-cube-20140116/ or
http://www.w3.org/TR/2013/PR-vocab-data-cube-20131217/ for specific
versions. That sounds like a good idea ;-) - but, again, can be hard to
parse



> Name-dropping :-)   I am a friend of Larry Masinter
>    http://larry.masinter.net
>
> Long-term archiving is one of his pet subjects
>    http://larry.masinter.net/0603-archiving.pdf
>
Thanks for the pointer! I'll have a look.

Regards,
Christophe


>
> Regards
> Tomas
>
> From: Christophe Guéret [mailto:christophe.gueret@dans.knaw.nl]
> Sent: Tuesday, April 08, 2014 11:24 AM
> To: CARRASCO BENITEZ Manuel (DGT)
> Cc: Christophe Gueret; public-dwbp-wg@w3.org
> Subject: Re: ACTION-10 Possible contribution to the topic from DANS
>
> Hoi,
> Ok. So we may be onto something slightly different then... regarding your
> example, the temperature in Luxembourg the 2003-04-08 would most likely be
> fetched out of a preserved data set that contains the daily temperatures.
> This dataset would be preserved at, say, DANS and contain only "
> http://example.com/lu" URIs in it (just like every new version of DBpedia
> still use exactly the same URIs for the resources it contains). Then we
> would more likely build something like
> http://example.com/dataset/UUID?http://example.com/lu, the UUID being
> that of the dataset which contains the description of the temperatures on
> 2003-04-08.
>
> But the two problems I have with this approach are:
> * The use of a parameter for the request, this makes it easier that trying
> to split the URI but it not as neat as having just a plain URI. In this
> respect, we are also looking at the IETF DURI draft (
> https://tools.ietf.org/html/draft-masinter-dated-uri-10) to provide a
> nicer dated scheme for URIs. But then we would need a dereferencing service
> for those DURI who is likely to take them as a GET parameter... so we just
> shift the issue :-\
> * In order to just deliver the preserved data as it was preserved, the
> description should still describe http://example.com/lu and thus not take
> into account the fact that it is a different time-located version of the
> description that is being returned. We could rewrite the description on the
> fly but that's not a good practice wrt preservation. Maybe embedding the
> description into another that described the archived resource, and package
> the whole thing with provenance info would be a good fix there...
> Cheers,
> Christophe
>
> On 8 April 2014 11:10, Manuel.CARRASCO-BENITEZ@ec.europa.eu <
> Manuel.CARRASCO-BENITEZ@ec.europa.eu> wrote:
> Christophe,
>
> Yes. More: an example
>
> Temperature in Luxembourg today - dynamic URI
>   http://example.com/lu
>
> Temperature in Luxembourg the 2003-04-08 - static URI
>   http://example.com/lu/2003-04-08 - static URI
>
> Regards
> Tomas
>
> From: Christophe Guéret [mailto:christophe.gueret@dans.knaw.nl]
> Sent: Friday, April 04, 2014 3:36 PM
> To: public-dwbp-wg@w3.org
> Subject: ACTION-10 Possible contribution to the topic from DANS
>
> Hoi Manuel, everyone,
> We've added a bit about data preservation at DANS in the use-case document:
>
> https://www.w3.org/2013/dwbp/wiki/Use_Cases#Digital_archiving_of_Linked_Data
> Does this go along the lines of what you wanted to discuss with this
> action ?
>
> Christophe
>
>
> --
> Onderzoeker
> +31(0)6 14576494
> christophe.gueret@dans.knaw.nl
>
> Data Archiving and Networked Services (DANS)
> DANS bevordert duurzame toegang tot digitale onderzoeksgegevens. Kijk op
> www.dans.knaw.nl voor meer informatie. DANS is een instituut van KNAW en
> NWO.
>
> Let op, per 1 januari hebben we een nieuw adres:
> DANS | Anna van Saksenlaan 51 | 2593 HW Den Haag | Postbus 93067 | 2509 AB
> Den Haag | +31 70 349 44 50 | info@dans.knaw.nl | www.dans.knaw.nl
>
> Let's build a World Wide Semantic Web!
> http://worldwidesemanticweb.org/
>
> e-Humanities Group (KNAW)
>
>
>
> --
> Onderzoeker
> +31(0)6 14576494
> christophe.gueret@dans.knaw.nl
>
> Data Archiving and Networked Services (DANS)
> DANS bevordert duurzame toegang tot digitale onderzoeksgegevens. Kijk op
> www.dans.knaw.nl voor meer informatie. DANS is een instituut van KNAW en
> NWO.
>
> Let op, per 1 januari hebben we een nieuw adres:
> DANS | Anna van Saksenlaan 51 | 2593 HW Den Haag | Postbus 93067 | 2509 AB
> Den Haag | +31 70 349 44 50 | info@dans.knaw.nl | www.dans.knaw.nl
>
> Let's build a World Wide Semantic Web!
> http://worldwidesemanticweb.org/
>
> e-Humanities Group (KNAW)
>
>


-- 
Onderzoeker
+31(0)6 14576494
christophe.gueret@dans.knaw.nl

*Data Archiving and Networked Services (DANS)*

DANS bevordert duurzame toegang tot digitale onderzoeksgegevens. Kijk op
www.dans.knaw.nl voor meer informatie. DANS is een instituut van KNAW en
NWO.


Let op, per 1 januari hebben we een nieuw adres:

DANS | Anna van Saksenlaan 51 | 2593 HW Den Haag | Postbus 93067 | 2509 AB
Den Haag | +31 70 349 44 50 | info@dans.knaw.nl <info@dans.kn> |
www.dans.knaw.nl


*Let's build a World Wide Semantic Web!*
http://worldwidesemanticweb.org/

*e-Humanities Group (KNAW)*
[image: eHumanities] <http://www.ehumanities.nl/>
Received on Tuesday, 8 April 2014 12:05:10 UTC

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