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Re: Graph metadata example [was: Fwd: RDF data archives]

From: Yves Raimond <yves.raimond@bbc.co.uk>
Date: Sat, 7 Dec 2013 11:54:57 +0000
To: Pat Hayes <phayes@ihmc.us>
CC: Guus Schreiber <guus.schreiber@vu.nl>, RDF WG <public-rdf-wg@w3.org>
Message-ID: <1386417296.28774.51.camel@RD000190>
´╗┐On Sat, 2013-12-07 at 01:05 -0600, Pat Hayes wrote:
> On Dec 5, 2013, at 7:13 PM, Guus Schreiber <guus.schreiber@vu.nl> wrote:
> 
> > Just to put the discussion about the one graph metadata triple in perspective:
> > 
> > * Check out reference 3 in the message below [1] (sent today by a W3C chair).
> 
> ? I don't see any references there, it doesn't look like a message (??)
> > 
> > * Also, check the Prov bundle example in Sec. 4.2.3 of the provenance book written by the Prov chairs [2]. BTW Our response to the Prov WG a year ago is here [23.
> 
> That is fine. What they say is "we adopt the convention that the identifier of a bundle ... can be dereferenced to obtain a representation of the bundle." That is, they are using Web machinery of dereferencing to link a 'graph name' to the graph it names, *not* the dataset name-graph pairing convention. That is perfectly compatible with our specs. We could describe this convention as: "bundle identifiers denote what they conventionally identify in HTTP."
> 

If that is fine (and indeed that is the use-case which our example
addresses), then could we add a couple of sentences that makes it
explicit that dereferencing http://example.org/bob gives back the four
triples in the example? I thought section 1 made it explicit, but
perhaps we need to restate it alongside the multigraphs example.

Yves

> > This is simply to point out that ignoring practice is not going to help.
> 
> The primer, of necessity, will ignore a large swathe of RDF practice simply because it is a short document. I see no reason why it is obliged to focus attention on this particular (and particularly troublesome) case. 
> 
> Pat
> 
> 
> > An example *with proper caveats* might help a little bit.  Proper references to the Dataset Note will also likely be helpful.
> > 
> > Guus
> > 
> > [1] https://github.com/bio2rdf/bio2rdf-scripts/wiki/Bio2RDF-Dataset-Provenance

> > [2] http://books.google.nl/books?id=8aBeAQAAQBAJ&pg=PT72&lpg=PT72&dq=provenance+trig&source=bl&ots=eardCUYmGt&sig=4EA4vZlWoXR-2o3CbEJwzDEPC4U&hl=en&sa=X&ei=CvqgUub1JOqf0QXSxYGACw&ved=0CFAQ6AEwBA#v=onepage&q=provenance%20trig&f=false

> > [3]  http://lists.w3.org/Archives/Public/public-rdf-wg/2012Oct/0208.html

> > 
> > -------- Original Message --------
> > Subject: 	RDF data archives
> > Resent-Date: 	Fri, 6 Dec 2013 00:06:33 +0000
> > Resent-From: 	<semantic-web@w3.org>
> > Date: 	Thu, 5 Dec 2013 16:05:38 -0800
> > From: 	Michel Dumontier <michel.dumontier@gmail.com>
> > To: 	w3c semweb hcls <public-semweb-lifesci@w3.org>, "public-lod@w3.org"
> > <public-lod@w3.org>, SWIG Web <semantic-web@w3.org>, bio2rdf
> > <bio2rdf@googlegroups.com>
> > 
> > 
> > 
> > Hi all,
> >  As you may know, Bio2RDF produces RDF dumps of its RDF datasets [1,2].
> > For each dataset, we generate a dataset description file (as per [3];
> > example [4]) that is in n-triples format, while the dataset is comprised
> > of one or more *gzipped* n-triple files. I just noticed that LODStats
> > did not correctly parse [5] these files to generate the dataset
> > statistics, owing, perhaps, to the assignment of
> > "application/x-ntriples" in the relevant datahub.io <http://datahub.io>
> > resource metadata.
> > I'd like to know what mime type we should specify for zipped, gzipped
> > RDF data.
> > 
> > as we prepare for our next release, we're planning to generate n-quads
> > for the datasets, thereby linking versioned datasets with their
> > metadata. we are wondering whether there will be sufficient support for
> > this format. Also, we are wondering whether it would be problematic to
> > provide single file downloads that are tar.gz  formatted.
> > 
> > comments and suggestions most welcome,
> > 
> > m.
> > 
> > 
> > [1] http://bio2rdf.org/datasets

> > [2] http://download.bio2rdf.org/

> > [3]
> > https://github.com/bio2rdf/bio2rdf-scripts/wiki/Bio2RDF-Dataset-Provenance

> > [4]
> > http://download.bio2rdf.org/current/affymetrix/bio2rdf-affymetrix-20121004.nt

> > [5] http://stats.lod2.eu/rdfdocs?search=bio2rdf

> > 
> > -- 
> > Michel Dumontier
> > Associate Professor of Medicine (Biomedical Informatics), Stanford
> > University
> > Chair, W3C Semantic Web for Health Care and the Life Sciences Interest Group
> > http://dumontierlab.com

> > 
> > 
> > 
> > 
> 
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> 
> 
> 
> 
> 
> 
> 



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Received on Saturday, 7 December 2013 11:55:30 UTC

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