Hi Gordon,
On Wed, Feb 22, 2012 at 02:31:45PM +0000, Gordon Dunsire wrote:
> btw, I wish I'd know about Alistair's stuff on the architecture wiki
> before now - it's a great articulation of issues we've been discussing in
> the ISBD/XML Study Group, FRBR Review Group, and Joint Steering Committee
> for Development of RDA. But the language/terminology mis-match between
> abstract modellers and librarians certainly prevented me from finding it
> via Google.
There are alot of great formulations in Alistair's short paragraphs. Can you
perhaps point out the ones that particularly resonated?
Tom
On Tue, Feb 21, 2012 at 08:51:14PM -0500, Tom Baker wrote:
> ----------------------------------------------------------------------
> http://dublincore.org/architecturewiki/GraphMetadata
>
> Graph-based Metadata
> This is an experimental area, discussing the feasibility and potential
> value of construction of a metadata architecture on top of a relatively
> simple graph-model.
>
> Put simply, a metadata graph describes how things are related to other
> things. It doesn't go any further than that.
>
> Syntactic Interoperability
> A simple graph-model could provide an effective abstraction of a number of
> different metadata syntaxes, allowing metadata to be virtualised in a
> common, standard way.
>
> In other words, a simple graph-model could be used as the basis for an
> abstract metadata syntax, providing a foundation for translation
> between various concrete metadata syntaxes.
>
> On top of such an abstract syntax, application-specific constraints
> could be expressed, capturing the essential requirements of an
> "application profile".
>
> Semantic Interoperability
> An abstract syntax based on a simple graph-model also provides a firm
> foundation for a precise semantics.
>
> A semantics tells you how to merge graphs, i.e. how to merge metadata
> from different sources.
>
> A semantics also provides the foundation for layers of
> application-specific semantics. These layers then allow metadata to be
> "dumbed-down" gracefully, to whatever level is required.
>
> --
> Tom Baker <[log in to unmask]>
--
Tom Baker <[log in to unmask]>
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