Re: cse471 project 4

[Subbarao Kambhampati <rao@asu.edu>]

At 03:02 PM 12/1/2001 -0700, you wrote:
>Hello Rao,
>
>I have a question about Noisy-OR distribution.
>If I understood it correctly, then if there is NO inferior plutonium and NO
>low-quality hard water, there will be NO meltdown with probability of 1.

Yes.

>Doesn't that impair our belief that an EVENT could have happen even if none of
>the events leading to it are ture?
>How could we represent for example the exact example from Homework 4, where
>the meltdown can occur with probability of 0.01 even if there is no inferior
>plutonium nor low quality heavy water?

Good question.. but there is a way out ...

If you need to consider that possibility, you can introduce a so-called 
"leak node" in addition to
IP and LW and say that it summarizes all other ways in which CM occurs..


Rao

>thanks,
>Monika