name 'recall_score' is not defined
时间: 2023-09-16 22:12:11 浏览: 204
The error message "name 'recall_score' is not defined" means that the function "recall_score" is not recognized by Python. This typically occurs when the necessary library or module is not imported or installed.
To fix this error, you need to import the library or module that contains the "recall_score" function. The "recall_score" function is part of the scikit-learn library, so you need to install it first if you haven't already done so. You can install it using the following command:
```
pip install scikit-learn
```
Once you have installed scikit-learn, you can import the recall_score function using the following line of code:
```
from sklearn.metrics import recall_score
```
This should resolve the error and allow you to use the recall_score function in your code.