How to Use the MSE in Data Science

Mean squared error (MSE) for performance evaluation and optimization

Let’s talk about a crucial piece that’s subtly missing from most discussions about the mean squared error (MSE): and are not quite the same thing. You need separate scoring functions for model performance evaluation and optimization in machine learning. The MSE could be either or neither… that’s up to you.

In a previous article, I explained this at a high level, but I didn’t give you concrete examples. In…



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