groundtruth的标签在一个文件夹,预测的标签在另一个文件夹,如何计算该目标检测任务的F1分数(直接给出Python代码及注释)
时间: 2023-05-13 21:07:10 浏览: 152
首先,我们需要导入所需的库,包括numpy和sklearn.metrics中的precision_score、recall_score和f1_score:
```python
import numpy as np
from sklearn.metrics import precision_score, recall_score, f1_score
```
然后,我们可以定义一个函数来计算F1分数:
```python
def calculate_f1_score(groundtruth_labels, predicted_labels):
# 将标签转换为numpy数组
groundtruth_labels = np.array(groundtruth_labels)
predicted_labels = np.array(predicted_labels)
# 计算精确度和召回率
precision = precision_score(groundtruth_labels, predicted_labels)
recall = recall_score(groundtruth_labels, predicted_labels)
# 计算F1分数
f1 = f1_score(groundtruth_labels, predicted_labels)
return f1
```
在这个函数中,我们首先将标签转换为numpy数组,然后使用precision_score和recall_score函数计算精确度和召回率。最后,我们使用f1_score函数计算F1分数,并返回结果。
使用这个函数,我们可以计算目标检测任务的F1分数,例如:
```python
groundtruth_labels = [0, 1, 1, 0, 1, 0]
predicted_labels = [1, 1, 0, 0, 1, 1]
f1_score = calculate_f1_score(groundtruth_labels, predicted_labels)
print("F1 score:", f1_score)
```
输出结果应该为:
```
F1 score: 0.5714285714285715
```
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