mse
#
- mbgdml.losses.mse(errors)[source]#
Mean squared error (MSE).
\[MSE = \frac{1}{n} \sum_{i=1}^n \left( \hat{y}_{i} - y_{i} \right)^2,\]where \(y_{i}\) is the true value, \(\hat{y}_{i}\) is the predicted value, and \(n\) is the number of data points.
- Parameters:
errors (
numpy.ndarray
) – Array of \(\hat{y} - y\) values. This will be flattened beforehand.- Returns:
Mean squared error.
- Return type: