Question

Given the association rule X->Y, _________ is the ratio of the expected frequency of Y doesn’t occur to the frequency of X occurs and Y does not occur.

Select one:

a. Support

b. Confidence

c. Lift

d. Gain

e. Conviction

Answer 1

The correct answer is e. Conviction

Given the association rule X->Y, Conviction is the ratio of the expected frequency of Y doesn’t occur to the frequency of X occurs and Y does not occur.

And the definitions of other options are-

a. Support -  It indicates how frequently the itemset appears in the dataset.

b. Confidence -It indicates how often the rule has been found to be true.

c. Lift- It is ratio of the observed support to that expected if X and Y were independent.

d.Gain- It is ratio of occurences of two items in dataset.