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Re: [ontolog-forum] Proceedings: "Database & Ontology" mini-series Sessi

To: "[ontolog-forum]" <ontolog-forum@xxxxxxxxxxxxxxxx>
From: paola.dimaio@xxxxxxxxx
Date: Tue, 17 Jul 2007 17:57:25 +0700
Message-id: <c09b00eb0707170357q11cb17c2k521b1fa1e640c09@xxxxxxxxxxxxxx>
Ok - thanks about that

maybe just mishap in the original statement

fyi - i know about bats only cause I got them in my house so I did some research recently to decide what to do
(eventually changed house)
www.cdli.ca/CITE/bats_birds.PDF

so the statement perhaps is

Induction. Assume a general principle that subsumes many facts. Given: Tweety, Polly, and Hooty are birds. Fred is a seagull. Tweety, Polly, and Hooty fly. Fred flies. Assume:  all birds fly

going to class now
P





On 7/17/07, Waclaw Kusnierczyk <Waclaw.Marcin.Kusnierczyk@xxxxxxxxxxx> wrote:
paola.dimaio@xxxxxxxxx wrote:
> Waclaw
> thanks for this
> I was hoping to get the mathematical representation of this reasoning so
> that I can learn somthing from my 'to do' list
> while I reason about nature -

wait for John to acknowledge my recast of his position.

> the problem is that y (fred, the bat) is not a bird
> y is a mammal -
>
> therefore, if y is not a bird, and it flies,
> not only birds fly
>
> (tell me what I am missing)

nothing in this bit.  but from

~P(y)
Q(y)

you infer

exists x, Q(x) and ~P(x)

*deductively*, not inductively.

vQ

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--
Paola Di Maio
School of IT
www.mfu.ac.th
*********************************************

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