NameError: name 'recall_score' is not defined

这个错误通常是因为您没有正确导入或安装所需的包。在这种情况下，您需要确保您已经导入了scikit-learn包：

import sklearn

如果您已经导入了scikit-learn包，但仍然遇到此错误，请尝试更新您的scikit-learn包：

!pip install -U scikit-learn

如果您仍然无法解决问题，请检查您的代码是否正确编写，并且是否存在其他错误。

相关问题

name 'recall_score' is not defined

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.

name '_precision_recall_curve' is not defined

This error message indicates that the code is trying to call a function or variable named `_precision_recall_curve`, but it is not defined in the current scope.

There are a few possible reasons for this error:

1. The function or variable was not imported properly: Make sure that you have imported all the necessary modules and functions, and that they are spelled correctly.

2. The function or variable was defined in a different module or file: If the function or variable was defined in another module or file, make sure that you have imported it correctly and that it is in the correct scope.

3. There is a typo in the code: Check the spelling of the function or variable to make sure that it is correct.

To fix this error, you should check your code and make sure that the function or variable is defined and imported correctly. If you are still having trouble, you can try searching for the function or variable in the documentation or online to see if there are any examples or explanations that can help.