2006년 5월 3일 수요일 오전 9:58
Hi, all here,
I have a question about profit chat (with parameters population, fixed cost, individual cost, revenue), so in what kind of cases or scenarios should we use the profit chart?
Thanks a lot in advance for any guidance.
2006년 5월 3일 수요일 오후 7:43
In general you use it when you select a target - e.g. if the user responds "Yes" I make $10, if they respond anything else I make nothing.
You can also use it as "If I correctly predict the response I get $10", but it doesn't really work well that way.
2006년 5월 4일 목요일 오전 8:35
Hi, Jamie, thanks a lot.
But profit chart here seems not be so important for mining model accuracy ?
2006년 5월 4일 목요일 오후 6:35
Yes it is used for accuracy, but more importantly it gives you a "cutoff" number for maximum profit. The model with the highest profit is the most accurate. Note that for both the profit and accuracy charts, that accuracy does not equate to "correct predictions". Accuracy by the lift and profit charts indicate how much of the target audience is captured if you pick the population with the highest likelihood of being a target as determined by the model.
If you select the peak of the profit chart, the mining legend will have a number indicating the prediction probability of that peak. Therefore you can get maximum profit by issuing a query such as
SELECT ... FROM MyModel PREDICTION JOIN ....
WHERE PredictProbability(MyColumn,'MyTarget') > value