Hi Lee - At Tue, 08 Jun 2010 14:16:44 -0600, Lee Passey wrote: > > On 6/8/2010 10:20 AM, Ross Singer wrote: > > > I think it's important to note here, that in RDF, you are -not- > > confined to one schema. > > No. That RDF was designed as a schema aggregator, and as a way to avoid > DTD constraints, is a given. The important issues are:
I am afraid I don’t think this a very good way of thinking about RDF. > 1. Having aggregated as many different schemas as you need, does the > resultant set completely express /all/ the data held by OL for any given > record? and, If you want absolute fidelity to the underlying record, there is always the JSON output, no? e.g., http://openlibrary.org/authors/OL31800A.json > […] > > /Is/ FOAF well-established? According to Mr. Summers, the BBC is > publishing RDF which includes some FOAF so we now have one data point, > although we don't yet know who besides the BBC itself is consuming that > data. /Is/ it extremely common? Who besides the BBC consumes it? /Do/ > most agents that are looking for biographical information know how to > parse it? Which are they? Are there agents looking for biographical > information that use other vocabularies? Which are they, and which > vocabulary do they use? Linked data sources using FOAF to describe persons include: dbpedia, Hungarian National Library [1], Swedish National Library [2], VIAF [3], DBLP Computer Science Bibliography [4], BBC, and probably others. It seems to me that bibliographic linked data is in the early stages, so perhaps FOAF is a mistake, but at this point the best evidence that I have is that the community seems to think FOAF is good enough. > What are the alternatives to FOAF? How common are they? Which is the > most expressive, and the most precise? Using FOAF does not preclude using other schemas, even to describe the same URI, even schemas that overlap in their use. That we say that http://openlibrary.org/authors/OL31800A is a foaf:Person and provide FOAF data for them, does not preclude also using the official or unofficial FRBR vocabularies, RDA vocabularies, the bio vocabulary, etc. additionally. > […] best, Erik 1. http://lists.w3.org/Archives/Public/public-lod/2010Apr/0155.html 2. http://article.gmane.org/gmane.culture.libraries.ngc4lib/4617 3. http://outgoing.typepad.com/outgoing/2009/09/viaf-as-linked-data.html 4. http://www4.wiwiss.fu-berlin.de/dblp/
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