f1 score precision recall
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为什么叫recall?
1.https://datascience.stackexchange.com/questions/12253/performance-measure-why-is-it-called-recall#:~:text=recall is called 'recall' because,'retrieved'%20as%20you%20suggest.&text=But%20usually%2C%20they%20only%20recall,the%20problem%20are%20%22recalled%22.
2.https://stackoverflow.com/questions/14117997/what-does-recall-mean-in-machine-learning
3.https://machinelearningmastery.com/precision-recall-and-f-measure-for-imbalanced-classification/
4.https://en.wikipedia.org/wiki/Precision_and_recall