Re: Dereferencing a URI vs querying a SPARQL endpoint

2009-05-21 Thread Giovanni Tummarello
Hi, there isnt a single answer unfortunately. Lets take symetric concise bound descriptions (SCBD) which basically means from the uri you'll get triples around it recursively until you find other URIs. (so when you find a blank node you keep on going). This seems a pretty good way to provide

Re: Dereferencing a URI vs querying a SPARQL endpoint

2009-05-21 Thread Leigh Dodds
Hi Daniel, From my own experience, there is often a very different set of results for dereferencing a linked data URI and a DESCRIBE on that URI in a SPARQL endpoint. The variance depends on how the linked data is being generated. For applications that are generating the RDF as an alternate view

Re: Dereferencing a URI vs querying a SPARQL endpoint

2009-05-21 Thread Hugh Glaser
On 21/05/2009 00:02, Daniel Schwabe dschw...@inf.puc-rio.br wrote: On 20/05/2009 17:14, Hugh Glaser wrote: Sorry, I'll try harder :-) I understand that what you are asking is something like this. For some sites (including rkbexplorer), when you resolve a URI, it constructs a SPARQL query

Re: Dereferencing a URI vs querying a SPARQL endpoint

2009-05-21 Thread Pierre-Antoine Champin
Peter Ansell a écrit : Hi, If you have a dataset that is very large and highly interlinked on particular URI's, the DESCRIBE response may be too large to reasonably transmit to a user over the internet (and to expect a sparql endpoint to give out in one chunk). This is assuming the typical

Re: Dereferencing a URI vs querying a SPARQL endpoint

2009-05-21 Thread Roberto García
Hi, Ok so even if this sounds like a good choice, its easy to see that in practice this is not sufficient, e.g. james bond would be a URI with no label if you fetch any of the other 2 nodes. This is particularly important if we take into account usability. So probably a SCBDwL (with labels

URLs instead of URNs (Was URI lifecycle (Was: Owning URIs))

2009-05-21 Thread W. Orthuber
David, In short, although semantic web architecture could be designed to permit unrestricted semantic drift, I think it is a better design -- better serving the semantic web community as a whole -- to adopt an architecture that permits the semantics of each URI to be anchored, by use of a URI

Group Seeks Sway Over E-Records System: semantic web/linked data overlooked?

2009-05-21 Thread Semantics-ProjectParadigm
Washington Post: May 21, 2009 Health Care Reform 2009: Group Seeks Sway Over E-Records System: http://www.washingtonpost.com/wp-dyn/content/article/2009/05/20/AR2009052003600.html?sub=AR This interesting article details the intention of the CCHIT, a certification body for IT in health care to

Re: URLs instead of URNs (Was URI lifecycle (Was: Owning URIs))

2009-05-21 Thread Kingsley Idehen
W. Orthuber wrote: David, In short, although semantic web architecture could be designed to permit unrestricted semantic drift, I think it is a better design -- better serving the semantic web community as a whole -- to adopt an architecture that permits the semantics of each URI to be

New github project for RDFizer scripts

2009-05-21 Thread Kingsley Idehen
All, The 30+ xslt stylesheets [1]used by the our collection Sponger Cartridges are now available for community development and enhancement via a github [2]. Links: 1. http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/ClickableVirtSpongerCloud 2. http://tr.im/m0PT -- Regards,

Guerilla science: what can we do in 10 days?

2009-05-21 Thread joel sachs
Greetings everyone, I recently invited participants in the upcoming e-Biosphere conference (June 1-3, London) to join me in a collective demonstration of the semantic web in action [1]. The short story is that we'll be integrating wildlife observations with background biodiversity data to

Re: New github project for RDFizer scripts

2009-05-21 Thread Ian Davis
On Thu, May 21, 2009 at 7:53 PM, Kingsley Idehen kide...@openlinksw.comwrote: All, The 30+ xslt stylesheets [1]used by the our collection Sponger Cartridges are now available for community development and enhancement via a github [2]. Links: 1.

Re: URLs instead of URNs (Was URI lifecycle (Was: Owning URIs))

2009-05-21 Thread W. Orthuber
Kingsley, thanks for your email, i know that an URI can be an URL or an URN. In case of an URN the exact meaning is not at once clear, the definition is not at once accessible, it is even possible (http://dbooth.org/2008/irsw/) that there are competing definitions. This is not good for

Re: Guerilla science: what can we do in 10 days?

2009-05-21 Thread Toby A Inkster
On 21 May 2009, at 20:03, joel sachs wrote: I'm mainly hoping for pointers to biodiversity data in RDF About a month ago I started an experiment in converting the IUCN Red List to RDF. The IUCN's data licensing policies are not entirely clear, and I've not been able to get a good answer

Re: Guerilla science: what can we do in 10 days?

2009-05-21 Thread Semantics-ProjectParadigm
Dear Joel and Toby, You may want to look at the following sites: Convention on Biodiversity: www.cbd.intBiodiversity Information Standards; www.tdwg.orguBio: www.ubio.org These will provide you with all standards and projects running, including those focusing on linking open data and semantic