- From: Paul Houle <ontology2@gmail.com>
- Date: Thu, 7 Oct 2010 11:56:15 -0400
- To: Martin Hepp <martin.hepp@ebusiness-unibw.org>
- Cc: Karl Dubost <karl+w3c@la-grange.net>, public-lod@w3.org, semantic-web@w3.org
- Message-ID: <AANLkTi=nG0u96wWeji=6JmuyEyorMSfWWf=d0WUy2Lfq@mail.gmail.com>
On Wed, Oct 6, 2010 at 5:09 PM, Martin Hepp <martin.hepp@ebusiness-unibw.org > wrote: I've got mixed feelings about "snippets" vs "fully embeded RDFa". For the most part I think systems that use snippets will be more maintainable, but I've seen cases where fully embedded RDFa fits very well into a system and there may be cases where the size of the HTML can be reduced by using it -- and HTML size is a big deal in the real world where loading time matters and we're increasingly targeting mobile devices. The RDFa issue that really bugs me is that a linked data URI can be read to signify a number of different things. Consider, for instance, http://dbpedia.org/resource/Rainbow_Bridge_(Tokyo) (i) This is a string. It has a length. It uses a particular subset of available characters (ii) This is a URI. It has a scheme, it has a host, path, might have a # in it, query strings, all that; a number of assertions can be made about it as a URI (iii) This is a document. We can assert the "content-type" of this document (or at least one version we've negotiated), we can assert it's charset, length in bytes, length in characters, particular subset of available characters used, number of triples asserted directly in the document, the number of triples we can infer by applying certain rules to this in connection with a certain knowledgebase, and on and on (iv) This is about a wikipedia article (some wikipedia articles don't map cleanly to a named entity) (v) This is about a named entity The more I think about it, the more I it bugs me, and it's all the worse when you've using RDFa and you've got HTML documents. For instance, you could clearly see http://ookaboo.com/o/pictures/topic/28999/Beijing as a signifier for a city. Some people would make the assertion that dbpedia:Beijing owl:sameAs ookaboo:topic/28999/Beijing. and that's not entirely stupid. On the other hand, it's definitely true that ookaboo:topic/28999/Beijing is sioc:ImageGallery. Put something true together with a practice that's common and you get the absurd result that dbpedia:Beijing is sioc:ImageGallery.
Received on Thursday, 7 October 2010 15:56:46 UTC