What’s your computer’s favorite metric?
<p>The upshot there was the MSE is rubbish for model evaluation but wonderful for optimization. The goal of performance evaluation is for a <em>person</em> (you, me, whoever) to read a score and understand something about our model. The goal of model optimization is for a machine to determine what the best settings for your model would be so that it fits your data.</p>
<p>A more poetic way of summarizing all this is that the MSE is bad for humans, but good for machines.</p>
<p><a href="https://towardsdatascience.com/whats-your-computer-s-favorite-metric-98c132b0488a"><strong>Click Here</strong></a></p>