SIOC profile for 'sioc-project.org' A SIOC profile describes the structure and contents of a community site (e.g., weblog) in a machine processable form. For more information refer to the <a href="http://rdfs.org/sioc">SIOC project page</a> FW: SIOC specification (CTIC) Comments from Fundación CTIC. ________________________________ From: Luis Polo Subject: SIOC specification (CTIC) Dear Uldis, I am Luis Polo from CTIC Foundation (Spain). We have received the invitation to participate in the SIOC Ontology specification to submit it to the W3C. We have analyzed the initiative and we consider it is a useful idea to interlink Web Communities. We would like to support the W3C member submission. We have two comments: 1) Fisrt of all, Sergio Fernandez, a researcher of our department, has developped an application, as a research project around the semantic web technologies, to publish mailing lists´s archives into an RDF format. This project is called SWAML. The SWAML vocabulary is built upon FOAF and Dublin Core and is completely compatible with SIOC specification, as you can see it as a subset of SIOC elements. If you consider it could be a useful application of SIOC, we can adapt quickly SWAML vocabulary to SIOC and include the software application as an actual implementation of SIOC. For more details, you can see http://swaml.berlios.de. 2) About SIOC specification, we have one comment. SIOC is a RDF vocabulary to describe Online Communities. It has a lot of links with FOAF (and Dublin Core), so the domain or range of some properties is for example foaf:Person. Also, the class sioc:User is subclass of foaf:Person. We think this is a good idea: reusing concepts for another vocabularies. The problem is that there are some SIOC elements that are semantically identical to some FOAF and Dublin Core elements but with another URI. So for example, SIOC rewrites the property dc:creator as sioc:has_creator or foaf:mbox_sha1sum as sioc:email_sha1. This could be a problem, so you have two syntactic different elements with the same associated semantics. In SIOC, as sioc:User is subclass of foaf:Agent, it is also a subclass of foaf:Agent (by transitivity), so sioc:User would have the property foaf:mbox_sha1sum. Of course, it will have also sioc:email_sha1. In RDF Universe it is not contradictory, but redundant (like reinventing the wheel). We suggest to identify these conflictive elements, eliminate them and then add their FOAF and Dublin Core counterparts. If you have any comments, feel free to contact us. Best Regards, p. Luis Polo Paredes Departamento I+D+i Fundación CTIC -Centro Tecnológico de la Información y la Comunicación- Parque Científico Tecnológico Gijón-Asturias-Spain www.fundacionctic.org --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "SIOC-Dev" group. To post to this group, send email to sioc-dev@googlegroups.com To unsubscribe from this group, send email to sioc-dev-unsubscribe@googlegroups.com For more options, visit this group at http://groups.google.com/group/sioc-dev -~----------~----~----~----~------~----~------~--~--- 2006-09-19T17:33:09+01:00 2006-10-06T11:35:03+01:00