National Radioactivity Stat of Japan as Linked Data

2011-04-17 Thread KANZAKI Masahide
Hello folks, Since the earthquake and the severe trouble at the Fukushima nuclear power plant, the Japanese Government has provided certain amount of data on radioactivities and other related issues. Although the effort has been substantial, it "lacks basic metadata, such as the latitude and longi

Re: Why does rdf-sparql-protocol say to return 500 when refusing a query?

2011-04-17 Thread Andy Seaborne
To quote RFC 2616: """ Response status codes beginning with the digit "5" indicate cases in which the server is aware that it has erred or is incapable of performing the request" """ and the server is incapable. It may be the query or the given query at that point in time. There aren't th

Re: Why does rdf-sparql-protocol say to return 500 when refusing a query?

2011-04-17 Thread Hugh Glaser
Ah, thanks. That explains it. I was puzzled why I was getting 500. I assumed the endpoint was returning 500 by mistake. Never crossed my mind it might be the the "correct" thing to do. As a consumer I would like to be able to distinguish a refusal to answer from a failure of the web server to acce

Re: ANN: Semantic CKAN - Revisited

2011-04-17 Thread William Waites
* [2011-04-17 19:58:28 +0200] Pierre-Yves Vandenbussche écrit: ] Nice work William, Thank you Pierre-Yves. ] Do you plan to add navigation links beetween ckan.net and semantic.ckan.net? >From semantic.ckan.net there are links back to *.ckan.net on each catalog record page. On ckan.net (and th

Re: ANN: Semantic CKAN - Revisited

2011-04-17 Thread Pierre-Yves Vandenbussche
Nice work William, Do you plan to add navigation links beetween ckan.net and semantic.ckan.net? best, Pierre-Yves Vandenbussche. On Sun, Apr 17, 2011 at 4:21 PM, William Waites wrote: > A new version of RDF infrastructure for CKAN has now been deployed at > >http://semantic.ckan.net/

ANN: Semantic CKAN - Revisited

2011-04-17 Thread William Waites
A new version of RDF infrastructure for CKAN has now been deployed at http://semantic.ckan.net/ this represents a complete reimplementation and re-thinking of how to manage a distributed set of metadata catalogues. Features: * Aggregation of all known CKAN instances (if there are an

Re: Minting URIs: how to deal with unknown data structures

2011-04-17 Thread Bob Ferris
Hi Frans, re. URI design patterns, I would highly recommend you to have a look at a presentation that describes how they are doing it at BBC [1]. Furthermore, I asked a question on SemanticOverflow (now answers.semanticweb.com) some time ago that deals with URI template specifications for Lin

Re: REST and Linked Data (was Minting URIs)

2011-04-17 Thread Bob Ferris
Hi Ed, this topic was recently discussed in the Semantic Web community [1] and the REST community [2,3] as well. It might be an interesting read re. this topic. Cheers, Bob [1] http://answers.semanticweb.com/questions/2763/the-relation-of-linked-datasemantic-web-to-rest [2] http://tech.

Re: Minting URIs: how to deal with unknown data structures

2011-04-17 Thread Ed Summers
Hi Frans, good questions :-) On Fri, Apr 15, 2011 at 8:48 AM, Frans Knibbe wrote: > But then I am faced with the problem: What method do I use to mint my > identifiers? Those identifiers need to be unique. Should I use a number > sequence, or a hash function? In those cases the URIs would be unif

REST and Linked Data (was Minting URIs)

2011-04-17 Thread Ed Summers
Hi Michael, On Fri, Apr 15, 2011 at 1:57 PM, Michael Hausenblas wrote: > I find [1] a very useful page from a pragmatic perspective. If you're more > into books and not only focusing on the data side (see 'REST and Linked > Data: a match made for domain driven development?' [2] for more details o