PMLE Question 3

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• Chose C2

  C - This option combines two techniques: downsampling and upweighting. While a 1:1 ratio is often the goal, a 10% positive example ratio is a significant improvement from the original less than 1% and can be a practical compromise.

• Chose C1

  answer is C. it can converge without discarding all useful negative samples. A is not clear about how it's generating the samples, might cause overfitting. B is not directly related to sample issue. D too extreme of undersampling

• 1

  aha the problem says less than 1% are negative examples so making them 1:1 would eleminate the example cases too much i think i understood