Rick, hello.
On 2008 Feb 4, at 21:24, Frederic Hessman wrote:
>>> 2. Format of the published vocabularies:
>>> _X_ XML or Turtle (let Darwin decide, assuming that the unproven
>>> assertion that XML alone isn't good enough is true)
>>> ___ XML
>>
>> I'll make sure to include detailed rationale in the document. I
>> don't think this is an assertion that can be proved in advance one
>> way or the other. The discussion is only about the weight of
>> anticipated problems and benefits of either option.
>
> Aha - so you're going to let me change my vote, now that you're not
> quite so certain? :-)
Oh, I'm not uncertain! It's just not an absolutely provable thing.
>> Catching a redirection can't possibly be the way of determining the
>> version of a vocabulary. If there's no Dublin-core-style way of
>> documenting versioning, then we need to stipulate explicit
>> versioning (not very pretty) or mandate the inclusion of an
>> official versioning element like
>
> <ivoa:vocabularyVersion>1.1</ivoa:vocabularyVersion>
>
> even if it isn't standard (it's not our fault that our non-
> astronomical colleagues are careless). This way, http://myvocab.org/myvocab#mytoken
> looks like it's long-term, but a glance at the internal
> documentation can be made to double-check if necessary.
The DCMI metadata terms <http://dublincore.org/documents/dcmi-terms/> include hasVersion and isVersionOf, but one very direct way of indicating the version would (potentially) be in the namespace URL.
Hmm. I think I need to find out more about exactly how versioning works in the DC set.
> If no version is given, then one must assume that the vocabulary
> is stable and trustworthy (e.g. constellation name vocabulary) or
> undocumented and thus unstable and untrustworthy (depending upon the
> context).
>
> Let's then call this option #4 - versioning in content, not in
> namespace.
Sounds good. Can you give me a 'possible resolution 4' paragraph that I could drop in to the text at <http://www.astro.gla.ac.uk/users/norman/ivoa/vocabularies/issues#versioning-3 >?
All the best,
Norman
-- Norman Gray : http://nxg.me.uk eurovotech.org : University of LeicesterReceived on 2008-02-05Z20:15:54