General Cards

Question 1

What is an important difference between expected benefit and expected benefit of targeting?

Answer 1

As stated in the name, expected benefit of targeting only looks at the case of targeting, so omits and costs and benefits of not targeting, hence the equation is simplified to p(x)v_r + (1-p(x))v_nr

Expected benefit on the other hand is looking at the whole picture so you need to use something like the expected profit equation.

Question 2

What do you need to remember when drawing ROC curves?

Answer 2

it is TPR vs FPR

remember to label all points

and obviously with all plots label them properly.

Question 3

What do you need to remember about predictor spaces?

Answer 3

You can’t have triple splits. You split 1 at a time.

You go for the biggest splits first and then go down.