A confusion matrix is a handy technique to current the forms of errors a machine studying mode makes. It’s an N by N grid with numbers, the place the worth within the [n, m] cell represents the variety of examples annotated with the n-th class acknowledged because the m-th class. On this tutorial, I’ll give attention to making a confusion matrix and a heatmap. The colour palette might be used to show the sizes of various teams, making it straightforward to note similarities or important variations in group sizes. This type of visualization is helpful whenever you take care of quite a few classes.
Here’s a visible clarification of the weather of the confusion matrix.