Oddities in information gain calculation

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lobstericus
Posts: 5
Joined: Wed Sep 23, 2009 2:00 am

Oddities in information gain calculation

Post by lobstericus »

Dear SMILE Team,

Here is another variation of a network that has odd information implications.
We have a link from C-> B, but this link is uninformative. The outcome of C does not affect the outcome of B so observing B does not tell us about C.
However, observing B still tells us about A. Unfortunately, the test view of the diagnosis system reports that B has zero information value.

A->B
C->{B,D}

Regards,

Bob.
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shooltz[BayesFusion]
Site Admin
Posts: 1417
Joined: Mon Nov 26, 2007 5:51 pm

Re: Oddities in information gain calculation

Post by shooltz[BayesFusion] »

Again, this is caused by default selection of the pursued fault. I guess you should pursue both A:FAIL and C:FAIL.
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