Re: JSON-LD context URI

It seems that UR currently points to the Community Group context.
Was the idea to create a new context URI?

Paolo

On Fri, Dec 5, 2014 at 12:40 PM, Robert Sanderson <azaroth42@gmail.com>
wrote:

>
> All,
>
> I agree that we should include it, and I'm happy with that URI.
>
> I'll make the change to put that URI in the document instead of the
> current xxx/yyy, create the context as a separate document in the github
> repo, and then reply to Jeremie?
>
> Rob
>
>
>
> On Thu, Dec 4, 2014 at 8:11 AM, Ivan Herman <ivan@w3.org> wrote:
>
>> Rob, Paolo
>>
>> I have just checked with my colleagues, and it is perfectly fine to
>> publish the @context document as, say,
>>
>> http://www.w3.org/ns/oa-context.jsonld
>>
>> (I just have dreamt up the URI, but that might be o.k.)
>>
>> It is up to you whether you prefer to let it go before the FPWD or want
>> to include it. I have a preference for the latter, but it is your
>> decision...
>>
>> Ivan
>>
>> > On 04 Dec 2014, at 09:57 , Ivan Herman <ivan@w3.org> wrote:
>> >
>> >>
>> >> On 03 Dec 2014, at 23:06 , Robert Sanderson <azaroth42@gmail.com>
>> wrote:
>> >>
>> >>
>> >> All,
>> >>
>> >> Also not as chair*, the opinion I quickly expressed on the call this
>> morning in more detail:
>> >>
>> >> 1.  We must create a new context URI.
>> >
>> > I agree.
>> >
>> >> I'm not sure if this needs to be done before FPWD or not?
>> >
>> > We should try. See below
>> >
>> >>
>> >> Right now, we have placeholder text in the context appendix:
>> >>        "... and can be referenced as http://www.w3.org/xxx/yyy."
>> >
>> > Yep, it is seeing that in the text that triggered my comments:-)
>> >
>> > I do not remember whether this URI is 'active' in the text, ie, whether
>> it is an <a> element. If yes, than it must be a dereferenceable URI even
>> for the FPWD; if it is only text, then it is not a show stopper,
>> procedurally. That being said, I think it would be better to do it for
>> real; I am not sure how long it will take for a next version of the model
>> document (our focus will probably shift for a while) and implementers may
>> already experiment with JSON-LD. Better provide something already now. (In
>> which case the URI in the text should also be 'active'.)
>> >
>> >
>> >> We also do not anywhere actually give the @context key in any of the
>> JSON-LD examples, including the "complete" example in appendix C.
>> >
>> > That is fine. But we do say it is JSON-LD; if people really want to
>> experiment with it, they will need the @context.
>> >
>> >> Even if we hadn't changed anything in the model or vocabulary, the
>> decision to use more developer friendly keys in the JSON serialization
>> would require a new context document.
>> >
>> > Yep. And whatever we do today is not cast in concrete.
>> >
>> >
>> >>
>> >> 2.  It would be beneficial to NOT create a new namespace URI and
>> instead continue to use the /ns/oa# URI.  The community group baked this
>> notion in from the beginning, such as not having a version or date in the
>> URI on the very sensible recommendation of Dan Brickley and his experience
>> with FOAF, amongst others.
>> >
>> > That works with me.
>> >
>> >>
>> >>
>> >> 3.  The discussion previously that resulted in the ontology being
>> included in the context document was around the rule that /ns/ must only be
>> used for ontology specifications.   Thus the workaround was to include both
>> context and ontology in the same document.  As JSON-LD is increasingly
>> popular, I'm sure that the issue as to context URIs could be solved in the
>> general case as a recommended best practice.
>> >>
>> >> Is this something that the chairs+staff should raise more broadly
>> within the W3C?  And to what extent do we need to solve it for FPWD or soon
>> thereafter?
>> >>
>> >
>> > Hm. I see your point. I can explore that, but there is a possibility
>> around this: what about
>> >
>> > http://www.w3.org/annotation/context.jsonld
>> >
>> > as a URI. That can be created at any time.
>> >
>> > I will explore the issue, and may come back to you before you get back
>> at your desk. In any case, if we go down that route, somebody should gives
>> me the JSON-LD source, and I am happy to create that file and the FPWD
>> should be updated accordingly. Does this work?
>> >
>> >
>> >> 4.   Paolo and I, as community group chairs, should also confirm this
>> approach with the CG that clearly has a stake in what happens at the
>> namespace and context URIs.  I personally would be very surprised if
>> there's any pushback, but it would be both polite and encourage continued
>> engagement to do so.
>> >
>> > Please do. And another thing: I have not followed all the details, but
>> has there been any change on the vocabulary itself (I do not think so, just
>> checking...)? I mean: are the /ns/oa.* files up-to-date? In any case, the
>> HTML page must be updated, referring to the current state; please provide
>> Doug or I with a new version.
>> >
>> > Thanks
>> >
>> > Ivan
>> >
>> >
>> >>
>> >>
>> >> Rob
>> >>
>> >> * Please assume this for everything I say, unless I specifically say
>> "As chair, ..." :)
>> >>
>> >>
>> >> On Wed, Dec 3, 2014 at 8:12 AM, Ivan Herman <ivan@w3.org> wrote:
>> >>
>> >>> On 03 Dec 2014, at 16:57 , Frederick Hirsch <w3c@fjhirsch.com> wrote:
>> >>>
>> >>> Ivan
>> >>>
>> >>> Thanks for noting this.
>> >>>
>> >>> It seems to me (personally not as chair) that the right thing to do
>> is the following
>> >>>
>> >>> 1. Keep oa as 'http://www.w3.org/ns/oa for the Web Annotation Data
>> Model we are producing, as in the FPWD
>> >>>
>> >>> 2. Update the landing page appropriately
>> >>>
>> >>> 3. Add a clear warning to the Community Group  Open Annotation Data
>> Model ‘community draft’ that there is an update underway in the Web
>> Annotation WG, with a pointer to our new draft and home page
>> >>>
>> >>> It seems better to focus on the new work with the same URL as
>> implementations are changing along with the specification.
>> >>>
>> >>> JSON-LD is new work so we don’t have a backward compatibility issue,
>> right?
>> >>
>> >> Actually, there is a oa.jsonld file right now which is the @context
>> AND the full vocabulary. In other words, it is a JSON-LD serialization of
>> the full vocabulary. And what we need is a separate file for the @context
>> only on, probably, a separate URI.
>> >>
>> >> Ivan
>> >>
>> >>>
>> >>> regards, Frederick
>> >>>
>> >>> Frederick Hirsch, Nokia
>> >>> Co-Chair W3C Web Annotation WG
>> >>> @fjhirsch
>> >>>
>> >>>
>> >>>
>> >>> On Dec 3, 2014, at 4:37 AM, Ivan Herman <ivan@w3.org> wrote:
>> >>>
>> >>>> Rob,
>> >>>>
>> >>>> one thing I realized, while looking at the FPWD text: the text
>> refers to oa as 'http://www.w3.org/ns/oa. At this moment that URI exists
>> and refers to the Community Group's output, with the vocabulary set up as
>> an HTML+RDFa and other formats like turtle or json-ld.
>> >>>>
>> >>>> If we decide to keep that URI, we should update its landing page. It
>> also means that this WG will override the various vocabularies that are
>> already there. Do we want to do that? If so, we should check whether a new
>> version should be put at those places while publishing the FPWD.
>> >>>>
>> >>>> We should also put up on the site a proper JSON-LD @context file;
>> the current document has a phony URI for that purpose, and
>> http://www.w3.org/ns/oa.jsonld has the full vocabulary (I am not sure
>> whether we want that to be the @context file, it is probably too big for
>> that purpose)
>> >>>>
>> >>>> Cheers
>> >>>>
>> >>>> Ivan
>> >>>>
>> >>>>
>> >>>> ----
>> >>>> Ivan Herman, W3C
>> >>>> Digital Publishing Activity Lead
>> >>>> Home: http://www.w3.org/People/Ivan/
>> >>>> mobile: +31-641044153
>> >>>> ORCID ID: http://orcid.org/0000-0003-0782-2704
>> >>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>
>> >>>
>> >>
>> >>
>> >> ----
>> >> Ivan Herman, W3C
>> >> Digital Publishing Activity Lead
>> >> Home: http://www.w3.org/People/Ivan/
>> >> mobile: +31-641044153
>> >> ORCID ID: http://orcid.org/0000-0003-0782-2704
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> --
>> >> Rob Sanderson
>> >> Technology Collaboration Facilitator
>> >> Digital Library Systems and Services
>> >> Stanford, CA 94305
>> >
>> >
>> > ----
>> > Ivan Herman, W3C
>> > Digital Publishing Activity Lead
>> > Home: http://www.w3.org/People/Ivan/
>> > mobile: +31-641044153
>> > ORCID ID: http://orcid.org/0000-0003-0782-2704
>>
>>
>> ----
>> Ivan Herman, W3C
>> Digital Publishing Activity Lead
>> Home: http://www.w3.org/People/Ivan/
>> mobile: +31-641044153
>> ORCID ID: http://orcid.org/0000-0003-0782-2704
>>
>>
>>
>>
>>
>
>
> --
> Rob Sanderson
> Technology Collaboration Facilitator
> Digital Library Systems and Services
> Stanford, CA 94305
>



-- 
Dr. Paolo Ciccarese
Assistant Professor of Neurology, Harvard Medical School
Assistant in Neuroscience, Massachusetts General Hospital
Senior Information Scientist, MGH Biomedical Informatics Core
ORCID: http://orcid.org/0000-0002-5156-2703

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