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Confusion Matrixについて

Last updated at Posted at 2020-06-06

この記事について

Confusion Matrixについてまとめる

Confusion Matrixとは

クラス分類において、評価指数の1つ。

Predicted Negative Predicted Positive
Actual Negative True Negative False Positive
Actual Positive False Negative True Positive

Precision = TP / (TP + FP)
Recall = TP / (TP + FN)

from sklearn.metrics import confusion_matrix
cm = confusion_matrix(y_test, y_pred)
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