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Re: [ontolog-forum] Time representation

To: "[ontolog-forum] " <ontolog-forum@xxxxxxxxxxxxxxxx>
From: "Barker, Sean (UK)" <Sean.Barker@xxxxxxxxxxxxxx>
Date: Tue, 29 Jan 2008 09:39:46 -0000
Message-id: <E18F7C3C090D5D40A854F1D080A84CA4A5A57A@xxxxxxxxxxxxxxxxxxxxxx>

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represent an official company view.    (01)

As an aside from my discussion with Pat Hayes on geometry and topology,
I wondered whether the discussion on time was actually discussing two
*ontologies.    (02)

Firstly, a time *topology, which is invariant under transformation and
scaling, and covers concepts like before, during, recurring.    (03)

Secondly a time *geometry, which covers concepts like date, interval,
accuracy.    (04)

Would separating these out into separate system, and then defining
*functions relating the time *geometry to the time *topology make the
*ontology more straightforward?    (05)

And also, is there a good term for *ontology, meaning an ontology
constructed from a particular viewpoint, and carefully leaving a
different viewpoint to construct its own *ontology, but which can/may at
a later point be imported into some unifying world theory? And are there
good guidelines for making such design decisions?    (06)

Sean Barker
BAE SYSTEMS - Advanced Technology Centre
Bristol, UK
+44(0) 117 302 8184    (07)

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