Hi all,
It has been more than a month ago since "we" last discussed the RDF
output of Open Library. I'd like to pick up on the issue by
summarizing:
- we want to keep the distinction between foaf:Person and other
entities, so changing the author template to use foaf:Agent (because
we cannot tell the difference at the moment) is not accepted.
I created issue 145 [1] to 'standardize' the values for entity_type
found in author records. Using its value ("person" for humans and
pseudonyms, "org" for organization) or its absence, we can choose
foaf:Person, foaf:Organization or foaf:Agent.
- I'd like to make the distinction between a URI for something that is
described by Open Library (Authors, Editions, Works, etc.) and the
URIs for the descriptions you get from Open Library (as HTML, RDF,
JSON etc.).
That's why I have asked to use the URIs without / at the end for the
Authors, Editions and Works (in the pull request/issue 136 [2]) and to
redirect HTTP agents to a description when they ask for a Work,
Edition or Author (since you cannot transfer people and most of the
works and books in OL over the internet) in issue 130 [3]. When a
Work's URI is <x>, HTML is available at <x/[name]> (currently
redirected to by HTTP 301), RDF at <x.rdf> (currently also at <x> when
requesting application/rdf+xml).
Using HTTP response code 303 and appropriate headers is common
practice in Linked Data, although change proposals that may add other
possibilities are heavily discussed.
- we want identifiers for Authors (such as VIAF) to be treated like
identifiers, not like just another link (to the VIAF website). I
created issue 144 [4] for this, and I think we're ready to agree on
how to store these identifiers. The discussion on GitHub yielded a
small list of possible identifiers already.
- there is(?) the issue that OL Editions are a combination of FRBR
expressions and manifestations. I personally think we can say Work =
Work, Edition is Manifestation, and link the two by the RDA property
workManifested and not mention Expression, like it is done now. I
think Expressions can be added later, if wanted. I can imagine each
translation can be its own Expression, but otherwise I'm okay with the
current distinction.
I think these were the main topics related to RDF. The topics changed
to types and documentation of types, then to finding out what actually
_is_ in the data.
Yesterday I changed the RDF templates (in my fork) to output correct
XML Schema dateTime values, because the Sindice Inspector [5] failed
reading the Open Library Work RDF [6].
I'd like to hear from others what (else) still needs to be changed
before the RDF templates can be updated (or what may be wrong in my
thinking).
Regards,
Ben
[1] https://github.com/internetarchive/openlibrary/issues/145
[2] https://github.com/internetarchive/openlibrary/pull/136
[3] https://github.com/internetarchive/openlibrary/issues/130
[4] https://github.com/internetarchive/openlibrary/issues/144
[5] http://inspector.sindice.com/
[6]
http://inspector.sindice.com/inspect?url=http%3A%2F%2Fopenlibrary.org%2Fworks%2FOL15120805W.rdf&content=&contentType=auto
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