On Feb 8, 2007, at 4:49 PM, Joe Andrieu wrote:
Scott Reynen wrote:
On Feb 8, 2007, at 4:29 PM, David Janes wrote:
That the authoritative hCard is the
one that _doesn't_ have a UID, i.e. potentially has less
information
than a fragment hCard?!
I think this is how authority generally works in practice, from
external references.
Scott,
Actually, I think that's quite contradicted by evidence in the wild,
especially in the offline world. Birth certificates, passports,
driver's licenses, etc., have indicia asserting their authority.
I had previously voted for rel="self me", but the symmetry of that is
more of a low-security technique to establish mutually endorsed
validity. Interesting, but only partially useful.
As explained previously, rel="me" can't help us here, because it
applies to the entire page, not a part of a page. That means that it
can't be used in places like my staff hCard at technorati: http://
technorati.com/about/staff.html#ryan_king, because there are many
hCards on that page.
I'd like to reintroduce @rel="via" to the conversation[1]:
5. The value "via" signifies that the IRI in the value of the href
attribute identifies a resource that is the source of the
information provided in the containing element.
Why not just have a "via" point to "source" hCards and any hCard
that is
self-referential is "authoritative"?
The simple answer is that we may already have a mechanism in hCard/
vCard which is sufficient (ie, UID). We should only look to add
things if there is nothing already in the format which is sufficient.
That seems both easy for
publishers and relatively straightforward for parsers. Keep
dereferencing @rel="via" attributes until you find one that
dereferences
to itself with @rel="via self". Once you get to one that says "I'm my
own source," you've got a reasonable assertion of authority.
It appears to me that this is essentially the same algorithm as the
url+uid proposal, but with adding new terms.
Ryan Cannon suggested this previously [2], but it seemed to get
lost in
"uid url" conversations.
The problem, IMO, with "uid url" is that the uid for a book, for
example, is more likely an ISBN rather than a URL, so it wouldn't
necessarily be a URI. Allowing both an ISBN uid and a "via" link
allows
parsers that aware of ISBN to do smart things (such as link to
Amazon if
they wish) /or/ follow the "via" tag for the author's source
reference.
I'm not sure how this is relevant. We're talking about hCard here,
not a citation format.
Also, the url+uid proposal only concerns the case where the url and
uid are the same (and, therefore, a URL).
-ryan
--
Ryan King
[EMAIL PROTECTED]
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