On Freitag, 21. März 2008, S Page wrote: > In February Markus Krötzsch wrote: > > P.S. You can find the results at > > http://pingthesemanticweb.com/stats/namespaces.php > > That home page's "Recently updated RDF documents" doesn't work as I > expect. It shows: > > 4 mins ago > http://ontoworld.org/index.php?title=Special:ExportRDF/Ontoworld.org:Genera >l_disclaimer&xmlmime=rdf ... > 18 mins ago > http://semantic-mediawiki.org/w/index.php?title=Special:ExportRDF/Sites_usi >ng_Semantic_MediaWiki&xmlmime=rdf > > But according to > http://ontoworld.org/index.php?title=Ontoworld.org:General_disclaimer&actio >n=history , the first document was last updated September 9 *2006*, and the > second on November 28 2007. > > What information is pingthesemanticweb using to determine "when > updated"? Special:ExportRDF doesn't set the Last-Modified header and > always sets <swivt:creationDate> to now. Maybe it does so because > figuring out whether any part of the RDF graph has changed is > impossible; however, pingthesemanticweb should assume "unknown" for > these documents.
The date given by PTSW gives the last time when the service obtained a new version of the respective RDF document. It is a simple service that still has various restrictions. Seeing that the ping-script is not really used and that PTSW is not the best way of building an SMW registry, we will soon provide a dedicated service for registering public SMW-sites (thus replacing ontoworld's list of sites using SMW). Markus > > > (Also, the contact link at the bottom, http://zitgist.com/contact.html , > is a 404.) > -- > =S -- Markus Krötzsch Institut AIFB, Universität Karlsruhe (TH), 76128 Karlsruhe phone +49 (0)721 608 7362 fax +49 (0)721 608 5998 [EMAIL PROTECTED] www http://korrekt.org
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