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RE: revisions and change in skos

From: De Smedt Johan <Johan.DeSmedt@wkb.be>
Date: Mon, 29 Sep 2008 13:05:48 +0200
Message-ID: <3AD9510C40516241AEAEA6DCE2F959B2627385@MAILSRV1.wkb.int>
To: "Rob Tice" <rob.tice@k-int.com>, <public-esw-thes@w3.org>

Hi Rob

The time constraint on the concept is used in the appication and in a
user interface.
The user can set any date he wants 
Navigation in time can be through link traversal (via change-notes or
other user interface artifacts).

It would be possible to exchange it between machines but there is no
standard for that (as far as I know).
Hence it "is" not possible yet in a meaningfull way in the "open" world

Best, Johan. 

-----Original Message-----
From: Rob Tice [mailto:rob.tice@k-int.com] 
Sent: Monday, 29 September, 2008 12:30
To: De Smedt Johan; public-esw-thes@w3.org
Subject: RE: revisions and change in skos

Hi Johan 

Thanks for the info. 

So in your system do you actually expose historical versions of concepts
and concept schemes via a machine interface, or do you access the
'history' only through notes in the latest version of a concept.

We also include relationship information in our version control. Is
anyone else using SKOS to expose this type of change information.


Best Regards

Rob



> -----Original Message-----
> From: De Smedt Johan [mailto:Johan.DeSmedt@wkb.be]
> Sent: 29 September 2008 08:16
> To: Rob Tice; public-esw-thes@w3.org
> Subject: RE: revisions and change in skos
> 
> Hi Rob,
> 
> In my project I am using the following approach
> - URI are forever
> - the skos:Concept may be constraind in time using an applicability 
> period
> - the skos Concept has a creation date. modification date and 
> version(=introduction version) property
> - semantic relations are not versioned (skos would be more difficult 
> to accommodate that)
> - Next to semantic relations, change-notes are used on versioned 
> concepts.
>   These change notes contain references to earlier/newr versions of a 
> concept
> 
> This is sufficient for my curent projects
> 
> best.
> 
> kr, Johan De Smedt
> e-mail: johan.de-smedt@tenforce.com
> ===================
> -----Original Message-----
> From: public-esw-thes-request@w3.org
> [mailto:public-esw-thes-request@w3.org] On Behalf Of Rob Tice
> Sent: Monday, 29 September, 2008 08:57
> To: public-esw-thes@w3.org
> Subject: revisions and change in skos
> 
> 
> Dear list members
> 
> The background to my questions is that we are currently considering 
> developing a 'SKOS resolver' (for want of a better description) for 
> our terminology management solution to sit alongside the other formats

> we currently implement.
> 
> This has however thrown up some questions.
> 
> As part of this requirement we (ideally)need to:
> 1 Expose versioning information
> 2 Allow identification of terminology changes between versions
> 
> As these are parts of our existing solution which are already exposed 
> using other formats.
> 
> So...
> 
> 1. How should we expose versioning information given that uri's for
>   concepts are fixed (please don't say timestamps on
>   uri's :))
> 
> 2. How should we identify and manage change between revisions of 
> concept schemes as this 'seems' to result in imprecision.
>    e.g. a concept 'a' is currently in thes 'A' and only has a 
> preferred label. A new revision of thes 'A' is published and what was
concept 'a'
>    is now a non preferred concept and thus becomes simply a non 
> preferred label
>    for a new concept 'b'.
> 
>    It seems to me that this operation loses some
>    of the semantic meaning of the change as all references to the
>    concept id of 'concept a' would be lost as it now is only a non 
> preferred
> 
>    label of a different concept with a different id (concept 'b').
> 
> Any comments would be much appreciated.
> 
> Best Regards
> 
> Rob
> 
> 
> ------------------------------------------------------------------
> 
> 
> Rob Tice, Director
> Knowledge Integration Ltd
> 35 Paradise Street
> Sheffield
> South Yorkshire
> S3 8PZ
> email: rob.tice@k-int.com
> Tel: +44 (0)870 803 4661
> http://www.k-int.com
> 
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Received on Monday, 29 September 2008 11:06:31 GMT

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