10 Mar 2004
CS 3243 - Uncertainty
15
Inference by enumeration
nStart with the joint probability distribution:
nFor any proposition φ, sum the atomic events where it is true: P(φ) = Σω:ω╞φ P(ω)
nP(toothache) = 0.108 + 0.012 + 0.016 + 0.064 = 0.2
nP(toothache Ú cavity) =
0.108 + 0.012 + 0.016 + 0.064 +
0.072 + 0.008 = 0.28
0.072 + 0.008 = 0.28
