In data mining and association rule learning, lift is **a measure of the performance of a targeting model (association rule) at predicting or classifying cases as** having an enhanced response (with respect to the population as a whole), measured against a random choice targeting model.

## What does the lift value mean?

The lift value is a measure of importance of a rule. The lift value of an association rule is the ratio of the confidence of the rule and the expected confidence of the rule.

## What is lift in a model?

Lift is a measure of the effectiveness of a predictive model calculated as the ratio between the results obtained with and without the predictive model.

## What does a lift chart tell us?

A lift chart graphically represents the improvement that a mining model provides when compared against a random guess, and measures the change in terms of a lift score. By comparing the lift scores for different models, you can determine which model is best.

## What is a good lift score?

For scores below 0.5, the actual churn rate in the buckets is almost zero. You can use this lift chart to verify that your model is doing what you expect from it. Then you would target all users with a score between 0.8 and 1.0, because this is the range where the churn rates are higher than the average churn rate.

## What does lift mean in data?

In data mining and association rule learning, lift is a measure of the performance of a targeting model (association rule) at predicting or classifying cases as having an enhanced response (with respect to the population as a whole), measured against a random choice targeting model.

## What is lift in Apriori?

Lift basically tells us that the likelihood of buying a Burger and Ketchup together is 3.33 times more than the likelihood of just buying the ketchup. A Lift of 1 means there is no association between products A and B. Lift of greater than 1 means products A and B are more likely to be bought together.

## What is lift decile analysis?

Lift is a measure of how much better the statistical model does than not using a model at all. Decile lift is this measure applied to deciles of the target records ranked by predicted probability (for a binary outcome) or predicted amount (for a continuous variable).

## What is uplift marketing?

The uplift of a marketing campaign is usually defined as the difference in response rate between a treated group and a randomized control group. This allows a marketing team to isolate the effect of a marketing action and measure the effectiveness or otherwise of that individual marketing action.

## How do you calculate lift?

The lift formula is lift force, F = C_{L} × q × A, where C_{L} is lift coefficient, A is area, and q is dynamic fluid pressure.

## How do you interpret a lift value?

The lift is a value between 0 and infinity: A lift value greater than 1 indicates that the rule body and the rule head appear more often together than expected, this means that the occurrence of the rule body has a positive effect on the occurrence of the rule head.

## What is baseline in lift chart?

Baseline (overall response rate): If we contact X% of customers then we will receive X% of the total positive responses. Lift Curve: Using the predictions of the response model, calculate the percentage of positive responses for the percent of customers contacted and map these points to create the lift curve.

## What is lift curve in data mining?

The Lift curve shows the curves for analysing the proportion of true positive data instances in relation to the classifier’s threshold or the number of instances that we classify as positive.

## How do you calculate lift classification model?

The Lift is easily calculated as the ratio of 1s on a certain sample point, divided by the ratio of 1s on the whole dataset, which can also be viewed as the predictions that a random algorithm would be making.