Dan wrote: (01)
"Given two event descriptions, in rdf, owl or similar... how would you
determine whether these documents described one event or two different
events?" (02)
AA: It depends on how you describe and define events (existence condition),
as:
an ordered set of a substance x, a property P, and a time t; e = <x, P, t>; (03)
an ordered set of states, phases, or stages s; (04)
an ordered tuple of a substance, a change type C, a place s and a time t; e=
<x, C, s, t>. (05)
Given the proper meaning, you apply the proper identity (or difference)
condition. The last description is the most adequate as far as [events as
concrete changes (individuals) are numerically unique entities having a
specific location in space-time. (06)
Then two events are the same if and only if they have the same generic
change, the same substance (object), and the same spatiotemporal regions, as
well as the same causes and effects: (07)
< x, C, s, t > = <y, D, l, t'> iff x=y; C=D, s=l, and t=t' (08)
Generally, events may be the same in three main senses: (09)
1. numerically the same, there is more than one event expressions, or names,
but only one event; (010)
2. specifically one, there is more than one event but they have no
differences in respect of their change type (species); (011)
3. generically one, there are many events but they have no differences in
respect of their change class (genus). (012)
Imo, having the real semantics of events as machine coded programs (semantic
rules and algorithms) is a way to build Global Event Management System
(GEMS) capable to recognize, identify, extract and describe all sorts and
kinds of events, happenings, occurrences, acts and actions. (013)
Thanks for very provocative question, Dan. (014)
Azamat (015)
----- Original Message ----- (016)
From: "Dan Brickley" <danbri@xxxxxxxxxx> (017)
To: "AzamatAbdoullaev" <abdoul@xxxxxxxxxxxxxx> (018)
Cc: "[ontolog-forum]" <ontolog-forum@xxxxxxxxxxxxxxxx>;
<semantic-web@xxxxxx> (019)
Sent: Friday, September 04, 2009 11:30 PM (020)
Subject: Re: [ontolog-forum] Event Ontology (021)
>
> Given two event descriptions, in rdf, owl or similar... how would you
> determine whether these documents described one event or two different
> events?
>
> Dan (022)
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