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Re: [ontolog-forum] What is the role of an upper level ontology?

To: Matthew West <dr.matthew.west@xxxxxxxxx>
Cc: "'[ontolog-forum] '" <ontolog-forum@xxxxxxxxxxxxxxxx>
From: "Hassan Aït-Kaci" <hassanaitkaci@xxxxxxxxx>
Date: Sun, 19 May 2013 12:41:20 +0200
Message-id: <5198AC50.5080007@xxxxxxx>
On 5/19/2013 12:26 PM, Matthew West wrote:

Dear Hassan,

This is conflating two things:

a)      Membership of a club to a sports federation, and of a player to a sports club

b)      Whole-part.

I would argue that it is the membership relation that is not transitive, but that it is quite reasonable to create a mereological sum of the players of the clubs that are members of a sports club and of a sports federation, and that this is transitive.

I was referring to: (1) team is-part-of club and (2) club is-part-of federation - although (3) not every such clubs' team is-part-of federation. I was not referring to player is-member-of team - this is only incidental is the definition of a club being part of a federation if it has an all-professional team. Such a team would be part of a federation, but not the other non-pro teams on such a club. One could come up with another condition for a club to be part of a federation - say if it has at least one team that qualifies a being part of the federation (whatever the condition may be).




Matthew West                           

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From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx [mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Hassan Aït-Kaci
Sent: 19 May 2013 07:26
To: jmcclure@xxxxxxxxxxxxxx
Cc: ontolog-forum@xxxxxxxxxxxxxxxx
Subject: Re: [ontolog-forum] What is the role of an upper level ontology?


On 5/19/2013 1:43 AM, jmcclure@xxxxxxxxxxxxxx wrote:

Could you provide example of a nontransitive part relation

A sport team is part of a sport club. A club is part of a sport federation if it has at least one team all of whose members are professional players. So a sport team may be part of a club, but not part of a federation.



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