Prev Up Next
Go backward to Solution to part (a)
Go up to 1 Qualitative Effect of Observations in Belief Networks
Go forward to Solution to part (c)

Solution to part (b)

Suppose you had observed a value for variable I. What other variables could have their belief changed as a result of this observation?

Answer: H, G, J, and F.

All of the ancestors of I, (namely H, G, and J) and all of their descendants (in this case only F).

Computational Intelligence online material, ©David Poole, Alan Mackworth and Randy Goebel, 1999

Prev Up Next