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
[log in to unmask] http://kcoyle.net
ph: 1-510-540-7596
m: 1-510-435-8234
skype: kcoylenet
--
Karen Coyle
[log in to unmask] http://kcoyle.net
ph: 1-510-540-7596
m: 1-510-435-8234
skype: kcoylenet
