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Re: xsd:anyURI - was: HTTPS and the Semantic Web

From: Nathan Rixham <nathan@webr3.org>
Date: Sat, 21 May 2016 21:53:58 +0100
Message-ID: <CANiy74yQ3jvOUGTRs3ofTugcqJhWdRW5UkmjuWM-ECfXiqPX2w@mail.gmail.com>
To: Pat Hayes <phayes@ihmc.us>
Cc: Hugh Glaser <hugh@glasers.org>, Henry Story <henry.story@bblfish.net>, Michael Brunnbauer <brunni@netestate.de>, Semantic Web IG <semantic-web@w3.org>
I meant your D :) Would need that one owl:sameAs triple (probably added
after the update)

On Sat, May 21, 2016 at 9:49 PM, Pat Hayes <phayes@ihmc.us> wrote:

>
> On May 21, 2016, at 9:48 AM, Nathan Rixham <nathan@webr3.org> wrote:
>
> That's what I was thinking about, with such a property (x:canonical) you
> as a maintainer of data could choose to do one of three things, in code I
> assume, when encountered:
>
> A) do nothing
> B) store all inferred triples (one triple for each http and each https
> uri)
> C) run a graph update
>
> How about
>
> D) run a graph update but add one owl:sameas triple (or whatever the
> appropriate more exotic assertion of identity is going to be) for each URI
> that has been updated, to make it possible to use this RDF with legacy RDF.
>
> Maybe that is your B) ?
>
> I know I'd opt for c in most cases.
>
> What would be your solution for how to record the fact that the old URIs
> in other RDF is supposed to be replaced by the new URIs your graph is now
> using? Or is that just someone else's problem?
>
> Pat
>
> I'm about to run in to this on a domain for a client with 199m triples
> that's going to swap to http2/https. The HTML pages are easy, 301 + rel
> canonical. The rdf files could be the same easily, one would hope.
> On 21 May 2016 5:31 pm, "Hugh Glaser" <hugh@glasers.org> wrote:
>
>> lol
>>
>> And apparently we are not allowed to discuss the idea of RDF being
>> broken, by the way, so bad boys you and Nathan!
>>
>> Nathan, can we please think about the scale of this thing.
>> Firstly, I have just counted the model files on one of many, many,
>> domains I maintain - there are 3406702.
>> This represents a bunch of RDF that is also held in an RDF store, along
>> with other RDF - and served from there as Linked Data.
>> There are 62375696 different URIs in this one dataset alone.
>>
>> Now the real problem(!): these URIs are widely distributed among a large
>> number of model files, RDF stores and sameAs services.
>>
>> I’m not going to poke my nose (as yet perhaps!) into suggesting any
>> solutions (I agree there is a problem); but the idea of fixing things by
>> rewriting legacy RDF, or introducing owl:sameAs, or some other predicate++,
>> for all the URIs in the world seems to me to ignore the practical aspects
>> of a serious amount of RDF.
>> We might just be finally getting to the stage of having a breadth of real
>> applications using RDF; telling people to go away and change everything is
>> a recipe for convincing people that RDF has failed (which I hasten to add
>> it hasn’t!).
>>
>> Best
>> Hugh
>>
>> > On 21 May 2016, at 17:05, Michael Brunnbauer <brunni@netestate.de>
>> wrote:
>> >
>> >
>> > Hello Nathan,
>> >
>> > On Sat, May 21, 2016 at 04:55:13PM +0100, Nathan Rixham wrote:
>> >>> The day that that "a" in Turtle/SPARQL represents
>> >> https://www.w3.org/1999/02/22-rdf-syntax-ns#type instead  of
>> >> http://www.w3.org/1999/02/22-rdf-syntax-ns#type will be the day when
>> RDF
>> >> breaks.
>> >>
>> >> If RDF breaks because somebody can't open a file and string replace a
>> with
>> >> b in some code then save, a 20 second fix, it's already broken.
>> >
>> > The dby when everybody who ever used RDF opens b file bnd replbces b
>> with b.
>> >
>> > Regbrds,
>> >
>> > Michbel Brunnbbuer
>> >
>> > --
>> > ++  Michael Brunnbauer
>> > ++  netEstate GmbH
>> > ++  Geisenhausener Straße 11a
>> > ++  81379 München
>> > ++  Tel +49 89 32 19 77 80
>> > ++  Fax +49 89 32 19 77 89
>> > ++  E-Mail brunni@netestate.de
>> > ++  http://www.netestate.de/
>> > ++
>> > ++  Sitz: München, HRB Nr.142452 (Handelsregister B München)
>> > ++  USt-IdNr. DE221033342
>> > ++  Geschäftsführer: Michael Brunnbauer, Franz Brunnbauer
>> > ++  Prokurist: Dipl. Kfm. (Univ.) Markus Hendel
>>
>> --
>> Hugh
>> 023 8061 5652
>>
>>
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Received on Saturday, 21 May 2016 20:54:26 UTC

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