W3C home > Mailing lists > Public > public-lod@w3.org > November 2015

Re: New LOD dataset for media types

From: Haag, Jason <jason.haag.ctr@adlnet.gov>
Date: Thu, 5 Nov 2015 08:32:22 -0600
Message-ID: <CAHjqjnKC3n-nBqWeV0--e6sF16Vksm5jAfTxTJibVAM11LD6HA@mail.gmail.com>
To: Silvio Peroni <silvio.peroni@unibo.it>
Cc: Graham Klyne <GK@ninebynine.org>, Linking Open Data Mailing List Data <public-lod@w3.org>, Semantic Web Mailing List <semantic-web@w3.org>
Silvio,

Thanks for this work on ontologies for media types. Is there any overlap
here with https://schema.org/MediaObject ?

BTW, the W3C has a really nice process in place for IRI persistence.
Perhaps establish something like https://w3id.org/sparontologies/mediatype/
and redirect for your server. I believe you could have stronger adoption
and use of your ontology if you adopt a good IRI design and persistence
strategy up front.

There are several nice things about the W3C permanent identifier approach.
For example:

1) longevity of the IRI (if sparontologies.net ceased to exist for whatever
reason, the ontologies could be maintained elsewhere by updating the w3id
target URL/redirect.

2) You don't have to worry about configuring a server for content
negotiation. The w3id.org server is already set up to handle content neg
using apache.

3) It uses github to sync with the w3id.org server and has a strong
commitment from several folks from the W3C and other organizations heavily
invested in the web. You simply add your .htaccess files and submit a pull
request. PURL.org is current disabled and not allowing even existing users
to login and manage their PURLs. The interface and approach for PURL.org is
cumbersome.


Regards,

J Haag




-------------------------------------------------------
Advanced Distributed Learning Initiative
+1.850.266.7100(office)
+1.850.471.1300 (mobile)
jhaag75 (skype)
http://linkedin.com/in/jasonhaag

On Thu, Nov 5, 2015 at 7:37 AM, Silvio Peroni <silvio.peroni@unibo.it>
wrote:

> Hi Graham,
>
> Nice work: this could be handy.
>
>
> Thanks :-)
>
> 1. I assume the machine formats are accessible by content negotiation?
>
>
> They are accessible by content negotiation indeed. In particular, one can
> use:
> - "application/rdf+xml" for having the data in RDF/XML;
> - "text/turtle” or "text/n3" for having the data in Turtle;
> - "application/ld+json" or "application/json" for having the data in
> JSON-LD;
> - any other kind of request will result in having the data in HTML.
>
> E.g.:
>
> > curl -L -H "Accept: application/rdf+xml"
> http://www.sparontologies.net/mediatype/text/plain
>
> will return the RDF/XML representation of such media type.
>
> It might be handy to also include direct links on the web page.  For
> example, I found I could change the .html suffix to .ttl or .json to get
> alternative representations, but that required guesswork on my part.
>
>
> That’s right, you can access directly to the related formats by adding
> .rdf, .ttl, .json and .html respectively. I’ll add a note in the homepage
> of the dataset and in each HTML page of each mime type soon.
>
> 2. Are there any plans (and resources) in place to ensure longevity of the
> sparontologies.net domain?
>
>
> Well, actually now the sparontologies.net website is handled by me, with
> personal resources. I would like to keep it available without external
> funds, but in case it will be more expensive to maintain I think I can ask
> for support to the University of Bologna, that’s the plan at least. Do you
> have something different in mind?
>
> 3. I note that the HTML page indicates cc-by licensing of the content, but
> there is no such information in the machine readable formats.
>
>
> That’s right, I have to add these data into the RDF representation as well
> – in my todo list.
>
> Have a nice day :-)
>
> S.
>
>
>
>
>
> ----------------------------------------------------------------------------
> Silvio Peroni, Ph.D.
> Department of Computer Science and Engineering
> University of Bologna, Bologna (Italy)
> Tel: +39 051 2094871
> E-mail: silvio.peroni@unibo.it
> Web: http://www.essepuntato.it
> Twitter: essepuntato
>
>
Received on Thursday, 5 November 2015 14:33:32 UTC

This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 16:22:27 UTC