dublin core ----------- - 15 elements - decentralised community extension - usage board endorsement ('ratification') of extensions - multilingual RDF schema annotations of DC (and related) property/class definitions (use case: 'find me the french description of dc:title...') - history: old DC RDF spec didn't really use RDF Schema, so instance data had to do all the work of expressing extensions/qualifications current DC RDF qualifier spec makes richer use of RDF, ie. sub-property, classes etc current concerns: "RDF 'versus' XML" Being processable as XML and as RDF perceived syntactic ugliness or overhead of RDF syntax containers: what does dc:creator(foo,bar) mean if bar is an rdf:Seq? datatyping: people want numbers, dates (creation date of document etc) what we like: - loose common structure is making distributed collaboration feasible: RSS 1.0 uses DC without the two groups having to agree a common DTD - easy composition: rdf allows data mixing what we need...: something soon...Received on Wednesday, 1 August 2001 13:08:19 UTC
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