- From: Chimezie Ogbuji <ogbujic@bio.ri.ccf.org>
- Date: Fri, 29 Sep 2006 17:52:25 -0400 (EDT)
- To: Harry Halpin <hhalpin@ibiblio.org>
- cc: public-grddl-wg <public-grddl-wg@w3.org>
The paragraph before the first XFN snippet (starts with 'Another microformat..'): Another microformat that allows for more information to be gleaned from the document is XFN. XFN is the XHTML Friends Network. XFN outlines relationships between individuals using a controlled set of values in the rel attributes of links. Examples of such relationships are friends, colleagues, co-workers, etc. Since XFN relationships are embedded in anchor ('a') elements they can be expressed (in RDF) as rdfs:seeAlso relationships between additional RDF graphs, foaf:knows relationships between people, properties constructed using the XFN namespace and the corresponding rel values, and appropriate terms from the relationship vocabulary [1]. These descriptions allow an RDF spider (a scutter) to follow links to additional RDF content that may also include vCard and FOAF descriptions. In addition, the use of these well-established RDF vocabulary terms for the relationships lend a certain amount of authority to what the XFN markup in the original source document express in XHTML. I wasn't sure what to do with the paragraphs leading up to the rel='me' snippet or the one afterwards... For the paragraph starting with 'Stephan's friend Peter Smith..': Stephan's friend Peter Smith writes several reviews of a new guitars. Each review has a link to the reviewer's profile page on the review site. Stephan know that the profile page belongs to Peter by visual inspection, but a machine does not. Luckily, Peter's profile page can link back to his own personal site using a rel="me" XFN link. This allows an RDF client to infer that the Peter on the Guitar site is the same Peter linked from Stephan's page. For the paragraph starting with 'The first restriction on ...': The first restriction on the data can be a check on review data such as rating. Once we have all the matching reviews, we can then restricted based on Stephan's friends. From the XFN links in Stephan's page which identify people Stephan trusts, we can match URIs to other locations where they have been asserted (the guitar review page for instance).
Received on Friday, 29 September 2006 21:52:32 UTC