Computing the posterior for i given the rest
We need to compute the difference
between the energy of the whole
network when i is on and the
energy when i is off.
Then the posterior probability
for i is:
Changing the state of i changes
two kinds of energy term:
how well the parents of i
predict the state of i
How well i and its spouses
predict the state of each
descendant of i.
j
i
k