•conditional or posterior probabilities
– probabilities
with prior information (i.e. after evidence)
•P(A|B) is the probability of A given
that all we know is B.
•P(Weather=Rainy|Month=April)
•Is P(BÞA)
equal to P(A|B)?
•Product Rule: P(AÙB) =
P(A|B)P(B)
