4问数据挖掘:什么是准确率和召回率Q4. Explain what precision and recall are. How do they relate to the ROC curve.Q4. 解释一下什么是准确率和召回率,他们与ROC曲线有什么关系.
Q4. Explain what precision and recall are. How do they relate to the ROC curve.Q4. 解释一下什么是准确率和召回率,他们与ROC曲线有什么关系.答案:准确度P 召回率R准确率:你的预测有多少是对的召回率:正例里你的预测覆盖了多少看懂这个表走天下:ROC曲线(Receiver Operating Characteristi