> > Could an atom 1.0 feed contain some item whith
> > "<category scheme='http://www.tbray.org/ongoing/tag/' term='Java'
> > somexmlns:href='http://www.tbray.org/ongoing/What/Technology/Coding/Java/'
> />
> > and other item with
> > "<category scheme='http://www.tbray.org/ongoing/tag/' term='Java'
> > somexmlns:href='http://www.tbray.org/ongoing/What/Technology/Sun/Java/' />
> > where the first Java is not the same as the second ?
>
> The term is machine readable. The label is human readable.
>
> <category
> scheme='http://www.example.org/cat/'
> term='http://www.example.org/cat/Technology/Coding/Java/'
> label='Java'
> />
> <category
> scheme='http://www.exmple.org/'
> term='http://www.example.org/cat/Technology/Sun/Java/'
> label='Java'
> />
>
> Regards,
> Aristotle Pagaltzis // <http://plasmasturm.org/>
Aristotle,
I agree with your statement but feel your example somewhat misleading. From my
understanding:
- A 'term' is a token (syntactically a string) used for indexing; in the absence
of an associated scheme it is processed as a free keyword/tag. There's no real
reason to make it a URI, but it can be a number (eg ISBN code).
- A 'scheme' is the identifier of a controlled vocabulary = a set of terms. It's
an IRI. It is optional, but 'scopes' the term, so ambiguities are avoided. If
present {scheme,term} is a tuple that unambiguously identifies a resource.
{http://www.software.org/, java} and { http://www.island.org/ , java} are
clearly different categories.
A note regarding the {scheme, code} tuple: the spec does not indicate how more
information about the category can be found, using some form of concatenation of
the scheme URI + term.
- A 'label' is a human readable string associated with a category code (term).
A note regarding 'label':= limitations of the spec are:
- it is not possible to represent several labels in different languages
- it is not possible to apply i18n attributes like 'dir' to a label.
Best regards
Laurent Le Meur
AFP
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