Yes. Once you start looking at this as a space, not just three orphaned ratios, a lot more structure pops out. The confusion matrix is basically a tiny algebraic terrarium for human error.

The most useful vocabulary clusters into a few families.

1. The basic counts

Everything starts from:

From there, most metrics are just different ways of slicing the same 2x2 box.


2. Metrics conditioned on the truth

These ask: given what the world actually is, how did the classifier behave?

These are the “how good are you on actual positives vs actual negatives?” family.


3. Metrics conditioned on the prediction