Rinke, Keep up the good work.
If we can help at W3C, from advice or collegial discussion (the semantic web Interest Group is on IRC at irc://irc.freenode.net/swig) to hosting the ontology in a w3.org namespace, while leaving it under CEN control, let me know. Of course the way the semantic web woks is that a separate document can be made which retrospectively links two or more existing vocabularies. That linking document can be linked from an ontology of a group which has decided their terms have that relation to your terms. So a stand-alone vocabulary cab be a very good member of the Linked Data would, so long as the terms do dereference according to the specs. KUTGW Tim On 2010-11 -30, at 04:26, Rinke Hoekstra wrote: > Hi Bernard, > > On 30 nov 2010, at 09:56, Bernard Vatant wrote: >> BTW seems to me (now that you eventually led me to the OWL file) there is >> another way this ontology does not follow Linked Data best practices : It >> does not rely on any other vocabulary, although many classes and properties >> it defines could be easily find in what I call the Linked Open Vocabularies >> (FOAF, Dublin Core, BIBO, FRBR etc.) > > Well, strictly speaking Metalex OWL was never intended as a Linked Data > vocabulary, but rather an ontology in the more traditional sense that happens > to use OWL. A fairly sensible approach in a pre-linked-open-government-data > world (i.e. pre mid-2009). Of course, now, I fully agree that it should have > been more interlinked with existing vocabularies. But I'm reluctant to have > to go through (and pay for) yet another lengthy CEN standardisation track ;) > >> Regarding this last point I'm in the process to gather in the single dataset >> how vocabularies used in the LOD cloud rely on each other. Stay tuned, >> publication in the days to come, bandwidth permitting. > > Interesting stuff. > > Cheers, > Rinke > >> >> Best >> >> Bernard >> >> 2010/11/30 Tim Berners-Lee <ti...@w3.org> >> Bernard, >> >> You have been tripped up by abuse of content negotiation. >> >> Their document says they do conneg. >> >> cwm http://www.metalex.eu/metalex/1.0 >> gives you data, as cwm only asks for RDF. >> >> Following it by hand >> $ curl -H Accept:application/rdf+xml http://www.metalex.eu/metalex/1.0 >> <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> >> <html><head> >> <title>303 See Other</title> >> </head><body> >> <h1>See Other</h1> >> <p>The answer to your request is located <a >> href="http://svn.metalex.eu/svn/MetaLexWS/branches/latest/metalex-cen.owl";>here</a>.</p> >> <hr> >> <address>Apache/2.2.11 (Ubuntu) DAV/2 SVN/1.5.4 mod_jk/1.2.26 >> PHP/5.2.6-3ubuntu4.6 with Suhosin-Patch mod_python/3.3.1 Python/2.6.2 >> mod_ruby/1.2.6 Ruby/1.8.7(2008-08-11) mod_ssl/2.2.11 OpenSSL/0.9.8g >> mod_perl/2.0.4 Perl/v5.10.0 Server at www.metalex.eu Port 80</address> >> </body></html> >> $ >> >> *** Note here we are a 303 which means that what we are being redirected to >> is NOT the >> ontology, but may be relevant. The chain of custody is broken, te site does >> not assert that what follows >> is the ontology. But let us follow it anyway: >> >> Following the 303 >> >> $ curl -H Accept:application/rdf+xml >> http://svn.metalex.eu/svn/MetaLexWS/branches/latest/metalex-cen.owl >> <?xml version="1.0"?> >> >> >> <!DOCTYPE rdf:RDF [ >> <!ENTITY owl "http://www.w3.org/2002/07/owl#"; > >> <!ENTITY owl11 "http://www.w3.org/2006/12/owl11#"; > >> [...] >> xmlns:metalex="http://www.metalex.eu/metalex/2008-05-02#"; >> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"; >> xmlns:owl="http://www.w3.org/2002/07/owl#";> >> <owl:Ontology rdf:about=""> >> [...] >> >> *** Note that here you do get some RDF. >> >> Tabulator can read that. Each term is as you explore marked by a red dot to >> indicate that it could not be looked up on the web. Because: >> ** You do not get information about the namespace >> xmlns:metalex="http://www.metalex.eu/metalex/2008-05-02#"; >> instead of the one you originally asked about! >> >> So after all that you can see what they are getting at and how they are >> thinking. >> But their linked data is seriously and needlessly broken. >> >> To fix it, they should just serve the ontology with 200 from >> http://www.metalex.eu/metalex/1.0 >> and fix the namespace in it to be that. No conneg. >> >> >> *** Without Firefox, however, even with tabulator, so accepting RDF or HTML, >> is redirected to: >> http://www.cen.eu/cen/Sectors/Sectors/ISSS/CEN%20Workshop%20Agreements/Pages/MLX%20CWAs.aspx >> which is a sort of a home page about the document, with copyright stuff, >> but it is not the ontology. >> >> So they are using the same URI for two documents with very different >> information, which is architecturally bad and practically messed you up. >> >> Note that John Shedidan (Ccd) and colleagues have put the UK laws on line >> with lots of RDF -- you could sync up wit them if you haven't >> >> Moral: point tabulator at it and if it doesn't work, fix it. >> Tim >> >> PS: Their copyright >> >> "CWAs are CEN copyright. Those made available for downloading are provided >> on the condition that they may not be modified, re-distributed, sold or >> repackaged in any form without the prior consent of CEN, and are only for >> the use of the person downloading them. For additional copyright >> information, please refer to the statements on the cover pages of the CWAs >> concerned." sounds as though if it applies to the ontology, which isn't >> obvious >> >> On 2010-11 -29, at 14:41, Bernard Vatant wrote: >> >>> Hi all >>> >>> According to http://www.ckan.net/tag/format-metalex there are two datasets >>> in the LOD cloud relying on metalex ontology. >>> >>> But they provide different URIs for this ontology ... >>> >>> http://www.best-project.nl/rechtspraak.ttl says : >>> void:vocabulary <http://www.metalex.eu/schema> >>> >>> http://www.legislation.gov.uk/ukpga/1985/67/section/6/data.rdf says : >>> xmlns:metalex="http://www.metalex.eu/metalex/2008-05-02#"; >>> >>> ... and both are dead links ... >>> >>> OTOH http://www.metalex.eu/documentation/ says: >>> "The namespace of the CEN MetaLex XML Schema and OWL specification is >>> http://www.metalex.eu/metalex/1.0"; >>> >>> ... which redirects to ... well ... >>> >>> Too bad because this metalex ontology looks really interesting :) >>> >>> Pointer, someone? >>> >>> Bernard >>> -- >>> Bernard Vatant >>> Senior Consultant >>> Vocabulary & Data Engineering >>> Tel: +33 (0) 971 488 459 >>> Mail: bernard.vat...@mondeca.com >>> ---------------------------------------------------- >>> Mondeca >>> 3, cité Nollez 75018 Paris France >>> Web: http://www.mondeca.com >>> Blog: http://mondeca.wordpress.com >>> ---------------------------------------------------- >> >> >> >> >> -- >> Bernard Vatant >> Senior Consultant >> Vocabulary & Data Engineering >> Tel: +33 (0) 971 488 459 >> Mail: bernard.vat...@mondeca.com >> ---------------------------------------------------- >> Mondeca >> 3, cité Nollez 75018 Paris France >> Web: http://www.mondeca.com >> Blog: http://mondeca.wordpress.com >> ---------------------------------------------------- > > > --- > Dr Rinke Hoekstra > > AI Department | Leibniz Center for Law > Faculty of Sciences | Faculty of Law > Vrije Universiteit | Universiteit van Amsterdam > De Boelelaan 1081a | Kloveniersburgwal 48 > 1081 HV Amsterdam | 1012 CX Amsterdam > +31-(0)20-5987752 | +31-(0)20-5253497 > r.j.hoeks...@vu.nl | hoeks...@uva.nl > > Homepage: http://www.few.vu.nl/~hoekstra > > > > >
