A confusion matrix is a handy strategy to current the sorts 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 vital variations in group sizes. This type of visualization is helpful while you cope with quite a few classes.
Here’s a visible clarification of the weather of the confusion matrix.
