>Hi all,
>you may want to have a look at the IRW workshop
>from WWW2006 [1], and in particular to the IRE
>(Identity of Resources and Entities) ontology,
>presented in several papers, e.g. "The bourne
>identity of a web resource" available [1],
>"Towards an OWL ontology for identity on the
>web", available from [2], and "A grounded
>ontology for identity and reference of web
>resources", available soon from [3].
>
>In IRE, "identifiers" (e.g. URIs) are
>distinguished on a formal ground from web
>resources ("realizations of information"),
>"information objects" (e.g. the information
>content of a web resource), and from entities
>that information objects can be "about". A set
>of "proxy" relations are defined to distinguish
>the kinds of aboutness that a resource has wrt
>entities. Alignments to RDFa and some commonly
>used web ontologies are also provided.
>
>Sorry for not entering into the debate in more
>detail, hope to contribute soon. (01)
Aldo, can you briefly say whether your IRE agrees
with the TAG pronouncements about URI meanings?
Or is your aim to base the whole theory on a
sounder basis? (02)
Pat (03)
>Cheers
>Aldo
>
>[1] http://www.ibiblio.org/hhalpin/irw2006/
>[2] http://sunsite.informatik.rwth-aachen.de/Publications/CEUR-WS//Vol-201/
>[3] http://okkam.dit.unitn.it/i3/index.php?location=home
>
>At 16:51 +0200 14-04-2007, Hans Teijgeler wrote:
>>Hi Bill,
>>
>>When you speak about "book" there are two possibilities:
>>1- you speak about a class of representation
>>that is an aggregate of other classes of
>>representation (strings, reals, binaries)
>>2- you speak about members of that class, being
>>ink-on-paper or pixels-on-screen, i.e. physical
>>objects that are copies of that book
>>
>>Normally you use 1- and use a URI for that. You
>>use 2- only in case you want to manage
>>individual copies, such as of a contract.
>>
>>Both can be related to as many identifiers as
>>you need by relating it to one or more strings.
>>In the 2- case such an identifier could be the
>>copy number. For that (and other) reason(s) we
>>represent strings etc as classes with a
>>datatype property. That string class has its
>>own URI. It can be typed as "English" (or,
>>denormalized for FOL fans, it can be made a
>>subclass of something like "English text").
>>
>>Regards,
>>Hans
>>
>>
>>From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx
>>[mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx]
>>On Behalf Of Bill Andersen
>>Sent: Saturday, April 14, 2007 16:13
>>To: [ontolog-forum]
>>Subject: Re: [ontolog-forum] {Disarmed} Re: OWL and lack of identifiers
>>
>>Hey Ken et al..
>>
>>>Ken Laskey wrote:
>>>
>>>
>>>Thus, anything that can be identified is a
>>>resource (i.e., you can use everything for
>>>something) and URIs are one means (and one
>>>that has been found very useful) for providing
>>>that identity.
>>>
>>
>>I think there's a slight confusion here. It is
>>decidedly *not* a name (which URIs are) that
>>provides the identity. Granted, URIs are meant
>>to be *identifiers* which suggests that at any
>>given time they name one and only one thing.
>>Rather, it is the primitive fact that books are
>>individuable at all, for example, that allows
>>them to be so named. There's the identity.
>>
>>.bill
>>
>>
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>
>
>--
>
>
>
>Aldo Gangemi
>Senior Researcher
>Laboratory for Applied Ontology
>Institute for Cognitive Sciences and Technology
>National Research Council (ISTC-CNR)
>Via Nomentana 56, 00161, Roma, Italy
>Tel: +390644161535
>Fax: +390644161513
>aldo.gangemi@xxxxxxxxxxx
>http://www.loa-cnr.it/gangemi.html
>icq# 108370336
>skype aldogangemi
>
>
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