- From: Misha Wolf <Misha.Wolf@reuters.com>
- Date: Fri, 10 Jun 2005 20:15:16 +0100
- To: semantic-web@w3.org, www-rdf-interest@w3.org, iptc-metadata@yahoogroups.com
Apologies for not responding to the various mails. I hope to get
around to them.
The IPTC News Metadata Framework Requirements spec (draft), dated
20 April 2005, is available at:
http://www.iptc.org/download/public/DRAFT-NAR_1.0-spec-NMDF-BusinessRequ
_26.pdf
Apologies for the long URI and for the likelihood of it wrapping.
Apologies also for the almost complete absence of examples. Pending
the availability of a more complete document, here is a fantasy
syntax we've been exploring. I hasten to add that we do *not*
propose that this be directly supported by XHTML. We do hope that
GRDDL will be able to transform all of this into suitable triples.
Here goes:
<foo
val="scheme:code" <!-- Value -->
type="scheme:code" <!-- Concept type -->
qual="scheme:code" <!-- Qualifies -->
parent="scheme:code" <!-- A parent -->
why="scheme:code" <!-- Why present -->
equiv="scheme:code" <!-- Equivalent to -->
assign="scheme:code" <!-- Assignee -->
conf="50" <!-- Confidence (%) -->
rel="50" <!-- Relevance (%) -->
when="2005-05-11T12:34:56" <!-- Date and time -->
xml:lang="en" <!-- Refers to the Description -->
>Hello world</foo> <!-- Description -->
where:
val identifies the concept, eg Angola or Interview or Japanese or
Pharmaceuticals or Tony Blair. Note that the concept is *not*
limited to being a *subject*. Subjects are simply the most
obvious example.
type identifies the concept type, eg Country or Genre or Language
or Business sector or Person.
qual identifies another [umm*] being qualified by this concept,
eg "Men's" qualifying "Swimming".
parent identifies a concept that is the parent of this concept.
why identifies the reason why the code was addded, eg:
- Direct: A concept which is directly extracted from the
content by a tool and/or by a person (eg Paris
or GlaxoSmithKline)
- Ancestor: An ancestor of some other concept (eg the
concepts France and Europe are ancestors of the
concept Paris)
- Derived: A concept derived by look-up in some taxonomy
(eg the concept Pharmaceutical Industry Sector
may be derived from the concept GlaxoSmithKline)
equiv identifies a semantically equivalent code.
assign identifies the person/system which will assign or has
assigned the code.
conf holds the Confidence level.
rel holds the Relevance level.
when holds the timestamp of when the code was added.
the description is some text that the user would find helpful.
Our understanding of the semantics is:
val is a statement about the story.
type, parent, equiv and the description are statements about the
code.
why, assign, conf, rel and when are statements about the
assignment of the code.
* qual is a statement about ... umm ... don't know. We understand
our requirement intuitively, but have trouble expressing it
formally. Help!
I should also clarify that:
- All of the above except for the code are optional. So a minimal
syntax might be:
<dc:subject val="cities:paris"/>
<dc:creator val="comedians:groucho"/>
<dc:type val="rhubarb:custard"/>
- Our spec permits the provider to add an arbitrary amount of info,
which may be obtained by a recipient via the URI constructed from
the scheme:code QName.
Misha
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Received on Friday, 10 June 2005 19:15:30 UTC