Map Development Area (MDA)
Location:
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internet
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semantic-web
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rdf
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rdf
| RDF, Resource Description Framework |
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Types:
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opinion
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good for tagging and simple linking, tractability -- meant for distributed information resources -- unpretty reification -- problems pinpointing resource -- very 'assembler-like'
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history
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1999: started off as pure metadata framework -- 2003: evolved to generic semantic relationships (emancipation from documents)
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motivation
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Internet is messy -- mostly text, images, but not 'content' -- search engines have to focus on text (HTML, PDF, ...)
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Comment:
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only conceptual model -- how instance data is actually store is a separate issue -- there exists several notations: one XMLish (RDF), one not XMLish (N3)
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model
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describe relationships between resources -- resources addressed via URIs -- everything is an RDF statement -- subject, predicate, value -- all knowledge expressed by a labelled arc -- graph
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comment
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W3C Standard 1999
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agenda
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enable not only interoperability on a syntactic level (like XML), but on a semantic level -- application level content exchange
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