Trading Off Precision and Recall

Trading Off Precision and Recall

Increase threshold (0.7, 0.9) of predicting 1 if needed to decrease false positive
Decrease threshold (0.4, 0.3) of predicting 1 if needed to decrease false negative

Can we choose the threshold automatically?
Yes, choose threshold that maximize \(F_1\) score (F score) on the cross validation set.

Resources:
- https://www.coursera.org/learn/machine-learning/lecture/CuONQ/trading-off-precision-and-recall