Rule- selection criteria Among the rules whose LHs matches W1 Longest-Match Selection Select a rule whose left hand side is the longest to apply Corresponds to using the strongest signature to predict Most Confident Select the rule with highest confidence to apply Pessimistic selection UCEN is the upper bound on the estimated error for a given confidence value, assuming a normal distribution of error UCFE, N cO N 2021/1/262021/1/26 6 Rule-Selection Criteria ◼ Among the rules whose LHS matches W1, ◼ Longest-Match Selection ◼ Select a rule whose left hand side is the longest to apply ◼ Corresponds to using the strongest signature to predict ◼ Most Confident ◼ Select the rule with highest confidence to apply ◼ Pessimistic Selection ◼ UCF (E,N) is the upper bound on the estimated error for a given confidence value, assuming a normal distribution of error N U E N conf CF p ( , ) = 1−