•Suppose we want to know the probability of each variable's values given all other variable values.
•Recall P(x1, …, xn)
=
P(x1|ParentValues(x1))
* … *
P(xn|ParentValues(xn))
•In computing P(x1, …, xi, …, xn), which of the terms in the above product involve xi?
•How would you describe the variables which appear in those terms? (see example)
•These neighboring variables are called Xi's Markov blanket.