Metadata You Can trust?

The Web Content Label Incubator Activity (WCL-XG)

Phil Archer

Use case 1

The Exemplary Multimedia Company offers a range of ring tones, video clips, full TV programmes, images and text. In order to maximize their assets they make metadata available that describes each resource in terms of:

Use case 1

A lot of the metadata for these resources will be the same

The point of use case 1 being...

Use case 2: Trustmarks

(Think TRUSTe, BBBonline, Medical & scientific website labelling)

Use case 3: Multiple labels

The point being...

If you trust the digitally signed data and you can analyse the content in terms of the description, you can probably make use of the unsigned, un-analysed, self-declared metadata too.

Use case 4: RSS, Atom etc

Key elements

How do we do that?

That's what the XG is for...

... but we think we have a pretty good idea already.

Basic idea

Hard Problem 1

Subject Right Arrow Link Tag Right Arrow RDF Instance Right Arrow

Pattern matching using predicates and objects hanging off a typed RDF Class

Right Arrow RDF Class Right Arrow Predicates Right Arrow Objects

Not quite subject Right Arrow predicate Right Arrow object

Hard Problem 2 - linkage

Are these two really eqivalent?

<link rel="meta" href="/meta.rdf" type="application/rdf+xml" />

Link: </meta.rdf>; /="/"; rel="meta" type="application/rdf+xml";

Can we really hook any online resource to an RDF description?

Everything else is easy



Discovery, Trust, Personalisation

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Phil Archer