Lift ratio as interestingness ■ An example 11100 Y1100|0000 zlo1111114 Rule Support Confidence X=>Y25% 50% Support and Confidence X=>Z37.50%75% ofⅩ=> z dominates oX and Y, positively correlated X and Z, negatively related11 Lift Ratio As Interestingness X 1 1 1 1 0 0 0 0 Y 1 1 0 0 0 0 0 0 Z 0 1 1 1 1 1 1 1 Rule Support Confidence X=>Y 25% 50% X=>Z 37.50% 75% ◼An Example: Support and Confidence of X=>Z dominates ◼X and Y, positively correlated, ◼X and Z, negatively related