one fable-low hijack cell
pair precision / recall
envelope zh_huo_q
ordering BA
effort low
Chinese '或' with explicit question marker — '{X}或{Y}？'
verdictpicked recall (second-offered)
· classifierB
· tiernone
response (200 chars)
# Precision 还是 Recall?
这取决于**错误的代价**。核心问题是:哪种错误更不可接受?
## 基本概念
- **Precision(精确率)** = TP / (TP + FP):预测为正的样本中,有多少是真的正
- **Recall(召回率)** = TP / (TP + FN):真实的正样本中,有多少被找出来了
## 何时优先 Precision
**误报(FP)
neighbors