Confusion Matrix（混淆矩阵）
True Positive:
Interpretation: You predicted positive and it’s true.
True Negative:
Interpretation: You predicted negative and it’s true.
False Positive: (Type 1 Error)
Interpretation: You predicted positive and it’s false.
False Negative: (Type 2 Error)
Interpretation: You predicted negative and it’s false.
Just Remember, We describe predicted values as Positive and Negative and actual values as True and False.
Recall:Out of all the positive classes, how much we predicted correctly. It should be high as possible.
Precision:Out of all the classes, how much we predicted correctly. It should be high as possible.
F-measure:越大越好
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