<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">Dear Marco,</div><div class="">(I answer also on the Semantics mailing list)</div><div class=""><br class=""></div><div class="">Last week, I answered to an email by Mireille concerning the Theory vocabularies.</div><div class="">Theory SKOS vocabularies can be exported as .RDF files. So, it is possible to put them on the IVOA vocabulary webpage you sent us:</div><div class=""><a href="http://wiki.ivoa.net/twiki/bin/view/IVOA/VocabularyTestPage" class="">http://wiki.ivoa.net/twiki/bin/view/IVOA/VocabularyTestPage</a></div><div class="">Nevertheless, we will also need the present dedicated website (<a href="http://votheory.obspm.fr" class="">http://votheory.obspm.fr</a> - excepted we would like to change its URL to make disappear the <a href="http://obspm.fr" class="">obspm.fr</a> and replace it with something as “ivoa something”) since, to fully take benefit of SKOS format, we need an application above the files to search/browse in the concept list and use the relationships between concepts. This point can wait. </div><div class=""><br class=""></div><div class="">Apart this point, our main concern is to get a decision concerning the syntax of URIs for concepts.</div><div class="">(see the discussion initiated by Nicolas Moreau on the 30th May 2017 on the Semantics mailing list). </div><div class=""><br class=""></div><div class="">I note that on the VocabularyTestPage, UCDs are presented in SKOS format. </div><div class="">So, I have a few questions since the problem we try to solve since one year, for the Theory vocabularies and concepts, is related. </div><div class=""><br class=""></div><div class=""><b class="">1 - Namespace, dates & revisions</b></div><div class=""><br class=""></div><div class="">A concept in the SKOS UCD list seems to be only the UCD without any namespace:</div><div class=""><div class="">Example of concept: phys.temperature.electron</div></div><div class="">(taken from: <a href="http://ivoa.net/rdf/Vocabularies/vocabularies-20091007/UCD/UCD.html" class="">http://ivoa.net/rdf/Vocabularies/vocabularies-20091007/UCD/UCD.html</a>)</div><div class=""><br class=""></div><div class="">On the other hand, vocabularies seem to be published with a date and a revision. For example:</div><div class=""><em style="font-family: arial, verdana, sans-serif; font-size: 13.649999618530273px;" class=""><a href="http://ivoa.net/vocabularies/ucd/ucdv1.33/ucd-1.33-20180224.rdf" class="">ivoa.net/vocabularies/ucd/ucdv1.33/ucd-1.33-20180224.rdf</a></em><span style="font-family: arial, verdana, sans-serif; font-size: 13.649999618530273px; background-color: rgb(255, 255, 255);" class=""> </span></div><div class=""><span style="font-family: arial, verdana, sans-serif; font-size: 13.649999618530273px; background-color: rgb(255, 255, 255);" class="">or </span> <a href="http://ivoa.net/rdf/Vocabularies/vocabularies-20091007/UCD/UCD.html" class="">http://ivoa.net/rdf/Vocabularies/vocabularies-20091007/UCD/UCD.html</a></div><div class=""><span style="font-family: arial, verdana, sans-serif; font-size: 13.649999618530273px; background-color: rgb(255, 255, 255);" class=""><br class=""></span></div><div class=""><font face="arial, verdana, sans-serif" size="2" class=""><span style="background-color: rgb(255, 255, 255);" class="">In a VO-Table in which columns are tagged with UCDs (ex: phys.temperature.electron), how do you provide the namespace that indicates to a system from which vocabulary (with revision and date) the UCD come from ? </span></font></div><div class=""><font face="arial, verdana, sans-serif" size="2" class=""><span style="background-color: rgb(255, 255, 255);" class="">Said otherwise, what is the rule to build </span></font><span style="background-color: rgb(255, 255, 255); font-family: arial, verdana, sans-serif; font-size: small;" class="">the URI of a concept ? </span><span style="background-color: rgb(255, 255, 255); font-family: arial, verdana, sans-serif; font-size: small;" class="">I mean the part before the # in:</span></div><div class=""><font face="arial, verdana, sans-serif" size="2" class=""><span style="background-color: rgb(255, 255, 255);" class=""><a href="http://ivoa.net/rdf/Vocabularies/vocabularies-20091007/UCD#Phys.temperature.electron" class="">http://ivoa.net/rdf/Vocabularies/vocabularies-20091007/UCD#Phys.temperature.electron</a></span></font></div><div class=""><br class=""></div><div class=""><font face="arial, verdana, sans-serif" size="2" class=""><span style="background-color: rgb(255, 255, 255);" class=""><b class="">2 - Interoperability</b></span></font></div><div class=""><font face="arial, verdana, sans-serif" size="2" class=""><span style="background-color: rgb(255, 255, 255);" class=""><br class=""></span></font></div><div class="">How do you ensure the interoperability between services ? </div><div class="">I mean how does a system can know that:</div><div class=""><font face="arial, verdana, sans-serif" class=""><span style="background-color: rgb(255, 255, 255);" class=""><a href="http://ivoa.net/rdf/Vocabularies/vocabularies-2009/UCD#Phys.temperature.electron" class="">http://ivoa.net/rdf/Vocabularies/vocabularies-<b class="">2009</b>/UCD#Phys.temperature.electron</a></span></font></div><div class="">is the same physical quantity than</div><div class=""><div class=""><font face="arial, verdana, sans-serif" class=""><span style="background-color: rgb(255, 255, 255);" class=""><a href="http://ivoa.net/rdf/Vocabularies/vocabularies-2012/UCD#Phys.temperature.electron" class="">http://ivoa.net/rdf/Vocabularies/vocabularies-<b class="">2012</b>/UCD#Phys.temperature.electron</a></span></font></div></div><div class=""><br class=""></div><div class="">Best regards</div><div class="">Franck</div><div class=""><br class=""></div><div><br class=""><blockquote type="cite" class=""><div class="">Le 17 avr. 2018 à 08:27, Marco Molinaro <<a href="mailto:marco.molinaro@inaf.it" class="">marco.molinaro@inaf.it</a>> a écrit :</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Hi <span class="" id=":17f.1" tabindex="-1" style="">Hervé</span>, Carlos, all,<div class="">unfortunately there was no <span class="" id=":17f.2" tabindex="-1" style="">TCG</span> face-to-face in Santiago, so the vocabulary topic was stuck.</div><div class="">I make myself a reminder and ask Mireille, so to have this discussed in the <span class="" id=":17f.3" tabindex="-1" style="">TCG</span> in Victoria.</div><div class=""><br class=""></div><div class="">Mireille has prepared already material to start the discussion from, see</div><div class=""><br class=""></div><div class=""><a href="http://wiki/" class="">http://wiki</a>.<span class="" id=":17f.4" tabindex="-1" style="">ivoa</span>.net/<span class="" id=":17f.5" tabindex="-1" style="">twiki</span>/bin/view/<span class="" id=":17f.6" tabindex="-1" style="">IVOA</span>/<span class="" id=":17f.7" tabindex="-1" style="">VocabularyTestPage</span></div><div class=""><br class=""></div><div class="">Hope this helps.</div><div class="">Cheers,</div><div class=""> Marco</div><div class=""><br class=""></div><div class="">PS - personal opinion: it would be nice to hear your theory ideas regardless the solution to this issue.</div><div class=""><div class="gmail_extra"><br class=""><div class="gmail_quote">2018-04-16 12:04 GMT+02:00 <span class="" id=":17f.8" tabindex="-1" style="">Hervé</span> Wozniak <span dir="ltr" class=""><<a href="mailto:herve.wozniak@umontpellier.fr" target="_blank" class=""><span class="" id=":17f.9" tabindex="-1" style="">herve</span>.<span class="" id=":17f.10" tabindex="-1" style="">wozniak</span>@<span class="" id=":17f.11" tabindex="-1" style="">umontpellier</span>.fr</a>></span>:<br class=""><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi Carlos,<br class="">
<br class="">
one current task for theory is to provide a clear place for its vocabulary. This is mandatory to be able to provide a revision for SimDM, to which I have committed myself.<br class="">
<br class="">
After a long discussion on theory and semantics, launched by Marco on May 19th 2017 and suspended after Franck's mail on Oct 9th, it has been suggested (by Marco and Mireille I guess) to move the discussion at TCG level in Santiago. Indeed, any solution mixes formal (IVOA consistence) and technical (subdomain redirection) aspects. I wasn't in Santiago, so I don't know what the decisions are.<br class="">
<br class="">
However, without any progress on this issue, it is impossible to move to a revision, even cosmetic, of SimDM.<br class="">
<br class="">
So my participation in the Victoria meeting depends on our capacity to conclude.<br class="">
<br class="">
Cheers<br class="">
Hervé<br class="">
<br class="">
PS: do I summarise properly the discussions in writing that 'IVOA' has to decided between:<br class="">
<br class="">
http://(www).<a href="http://ivoa.net/vocabularies/theory/vocabulary#ConceptName" rel="noreferrer" target="_blank" class="">ivoa.net/vocabula<wbr class="">ries/theory/vocabulary#<wbr class="">ConceptName</a><br class="">
or<br class="">
<a href="http://purl.ivoa.net/theory/vocabulary#ConceptName" rel="noreferrer" target="_blank" class="">http://purl.ivoa.net/theory/vo<wbr class="">cabulary#ConceptName</a><br class="">
<br class="">
provided that any solution allows for redirection towards an external server for curation (e.g. <a href="http://purl.obspm.fr/vocab" rel="noreferrer" target="_blank" class="">purl.obspm.fr/vocab</a>)<div class=""><div class="gmail-h5"><br class="">
<br class="">
Le 09/04/2018 à 19:43, Carlos Rodrigo a écrit :<br class="">
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
Dear interop and, in particular, theory people<br class="">
<br class="">
This is a call for contributions for the Theory session in the next IVOA Interop meeting in Victoria.<br class="">
<br class="">
If you are going to Victoria this may and you are interested in presenting of introducing any<br class="">
discussion related to theoretical data in the VO context, please, just send me your proposal.<br class="">
<br class="">
Of course, topics related to SimDAL, SimDM, SimDAL implementation note, semantics in the theoretical<br class="">
context, etc are welcome. But any new topic that you want to talk about is welcome too.<br class="">
<br class="">
See you soon<br class="">
<br class="">
Carlos Rodrigo<br class="">
<a href="mailto:crb@cab.inta-csic.es" target="_blank" class="">crb@cab.inta-csic.es</a><br class="">
<br class="">
</blockquote>
<br class=""></div></div>
-- <br class="">
Herve WOZNIAK<br class="">
Astronome<br class="">
<br class="">
Directeur-adjoint<br class="">
LUPM<br class="">
UMR5299 Université de Montpellier - CNRS<br class="">
Place Eugène Bataillon - CC 72<br class="">
F-34095 Montpellier Cédex 05<br class="">
<br class="">
Tel/Phone : +33 4 6714 3902 Fax : +33 4 6714 4190<br class="">
<br class="">
skype : herve.wozniak<br class="">
<a href="http://herve.wozniak.fr/" rel="noreferrer" target="_blank" class="">http://herve.wozniak.fr/</a><br class="">
</blockquote></div><br class=""></div></div></div>
</div></blockquote></div><br class=""></div></body></html>