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[ontolog-forum] OpenCyc OWL Files

To: "'[ontolog-forum] '" <ontolog-forum@xxxxxxxxxxxxxxxx>
From: "Ian Bailey" <ian@xxxxxxxxxxxxxxxx>
Date: Wed, 18 Feb 2009 18:07:09 -0000
Message-id: <016e01c991f3$b85023b0$28f06b10$@com>
Hi,    (01)

As part of an ontology-based reference data demonstrator I'm working on, I
decided to go look what was out there for free, or at least under creative
commons. I downloaded the OpenCyc OWL file and loaded it into my OWL editor
(all 124MB of it!).    (02)

I seem to be finding lots of orphan classes there - i.e. ones that are
sitting right at the top of the sub-super hierarchy. When I go look in the
OWL file itself, these classes seem to be in the file twice - once with
their sub-super relationship and once without.    (03)

As the file is so big, I can't be sure of what the problem is - it may well
be my OWL Editor struggling with such a large file.     (04)

Has anyone else encountered this problem, and if so do you know if there is
a corrected version available ?  The only way I can find for contacting
OpenCyc is through their SourceForge forum, but it doesn't appear to be that
active.    (05)

www.modelfutures.com    (06)

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