On 8/2/13 4:55 PM,
Wallis,Richard wrote:
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Looks to me more like an attempt to produce a PURL
service to point at publisher web page URLs. They are
only created upon request, and they could point at
anything. - even less like reliable resource identifier
than the ISBN!
Richard, that is the nature of DOI, not just DOI for ISBNs.
It can point to anything, and at times that anything is a
publisher's home page. Still, DOIs are considered important
identifiers.
I think this leaves us with a dilemma, which is:
1. Unless a publisher includes the ISBN-A on the package or
in metadata, you have no idea if there is one, but
2. Unless the ISBN international agency develops a canonical
URI pattern, we're stuck with the URN form - urn:isbn:....
Maybe we should be pounding on the doors of
http://www.isbn-international.org/
to get a simple, global ISBN URI.
kc
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Once you know the pattern, yes you could calculate
what the ISBN-A URL would be (if there is one created
for the book with that ISBN) , but that is not a
translation to a linked data URI.
In the same way, knowing the oclcnum of a bib record
lets you calculate what the WorldCat Linked Data URI for
the resource that record describes, because of the URI
pattern used in WorldCat data. However, they are still
separate and different things.
Treating it otherwise would be the equivalent of
using the text string which is the title of a book to
calculate what the dbpedia URI would be for the work
with that title and then saying that the URI was
equivalent to the title.
~Richard
Richard, did
you see my note about DOI and the ISBN? They claim
to be the official ISBN as URI:
http://www.doi.org/factsheets/ISBN-A.html
I believe that there is no problem translating an
ISBN string into the DOI URI.
kc
On 8/2/13 1:23 PM,
Wallis,Richard wrote:
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Richard Wallis posted:
[In the linked data
world] there is a significant difference
between
the >numbers (OCLC number, LCCN, ISBN,
etc.) associated with a
resource and the >URI that identifies
it.
Of these numbers, only ISBN is associated
with the resource. The OCN,
LCCN, and other national bibliographic
agency nubers, are associated
with the description.
That is true, the numbers have been
associated with the records (descriptions).
However the URI is a [linked data] identifier
for the resource.
Note the '[In the linked data world]' in
the text above you referenced. Linked data
uses http URIs as identifiers for resources,
so that they can be linked and those links
followed. Obviously there is need to record
numbers and other identifying strings (which
are not http URIs) that have been used to
identify the resource in other domains, as
properties in the RDF description.
ISBN is a bit of a special case, it is an
identifier for the resource, it is a string,
it is not a http URI that can be used as a
linked data identifier. So in RDF it is
captured as a string property.
~Richard.
--
Karen Coyle
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ph: 1-510-540-7596
m: 1-510-435-8234
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--
Karen Coyle
[log in to unmask] http://kcoyle.net
ph: 1-510-540-7596
m: 1-510-435-8234
skype: kcoylenet