python-3.x - 线性回归中的混淆矩阵

Question

我有实际值和预测值。

实际:33.3663, 38.2561, 28.6362, 35.6252

预测:28.9721, 35.6161, 27.9561, 22.6272

我想应用混淆矩阵来确定准确性。

Answer 1

解决方案

首先，混淆矩阵不适用于连续值。并且您还可以通过将连续值转换为类来使用它。检查https://datascience.stackexchange.com/questions/46019/continuous-variable-not-supported-in-confusion-matrix

from sklearn.metrics import confusion_matrix
 
expected = [1, 1, 0, 1, 0, 0, 1, 0, 0, 0]
predicted = [1, 0, 0, 1, 0, 0, 1, 1, 1, 0]
results = confusion_matrix(expected, predicted)
print(results)

输出

[[4 2]
 [1 3]]

引用

https://machinelearningmastery.com/confusion-matrix-machine-learning/