Q. Imagine, you are solving a classification problems with highly imbalanced class. The majority class is observed 99% of times in the training data. Your model has 99% accuracy after taking the predictions on test data. Which of the following is true in such a case?
1. Accuracy metric is not a good idea for imbalanced class problems.
2.Accuracy metric is a good idea for imbalanced class problems.
3.Precision and recall metrics are good for imbalanced class problems.
4.Precision and recall metrics aren’t good for imbalanced class problems.
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(A)
1 and 3
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(B)
1 and 4
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(C)
2 and 3
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(D)
2 and 4
β
Correct Answer: (A)
1 and 3