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Named Graph Literature

From: Chimezie Ogbuji <ogbujic@bio.ri.ccf.org>
Date: Fri, 6 Oct 2006 02:07:20 -0400 (EDT)
To: w3c semweb hcls <public-semweb-lifesci@w3.org>
Message-ID: <Pine.GSO.4.60.0610060147020.14095@joplin.bio.ri.ccf.org>

I wanted to list some literature relevant to the conversation on named 
graphs while it was still fresh in my mind.  I think the issue issue is 
crucial for this community, but perhaps some 
context would help (pun intended).

The document I refer to most often (for a variety of reasons) is Graham 
Klyne's Circumstance, provenance, and partial knowledge.  It is probably 
the most comprehensive on the topic mostly because it includes links to an 
email archives of 'original', earlier converstations during the buzz 
around RDF semantics.

The following sections are of most value: 
"An alternative: scoping assertions by context" [1], and "A survey of 
relationships between contexts" [2].  The latter covers a host of 
usecases (or scenarios) of various relationships between 'contexts' (or named graphs) 
that suggest the value in having such a mechanism.

The former (An alternative: scoping assertions by context) outlines a classic N3 example of issues 
with scoping assertions by context and their consequences - which overlaps (a bit) with 
the converstion on KD45:

:Lois :accepts { :Superman rdf:type :StrongPerson } .
:ClarkKent = :Superman.

entails?

:Lois :accepts { :ClarkKent rdf:type :StrongPerson } .

Finally, there is also the old Semantic Web Interest Group archive of 
works on named graphs [3] and a vocabulary for expressing relationships 
between named graphs [4]

[1] http://ninebynine.org/RDFNotes/UsingContextsWithRDF.html#xtocid-6303974
[2] http://ninebynine.org/RDFNotes/UsingContextsWithRDF.html#xtocid-6303979
[3] http://www.w3.org/2004/03/trix/
[4] http://www.w3.org/2004/03/trix/rdfg-1/

I had a great time at the F2F and am looking forward to the next..

Chimezie Ogbuji
Lead Systems Analyst
Thoracic and Cardiovascular Surgery
Cleveland Clinic Foundation
9500 Euclid Avenue/ W26
Cleveland, Ohio 44195
Office: (216)444-8593
ogbujic@ccf.org
Received on Friday, 6 October 2006 06:07:26 GMT

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