I have 4 classes for an application of classification of animal kingdom: 1 --> invertibrates; 2 --> vertibrates; 3--> mammal; 4 ---> ambhibian. Given a mixture of images the objective is to identify mammals correctly. In the confusion matrix for this example will the TP denote the class 3 (mammal)?
Q1: Therefore, in general TP is the class category which is of utmost significance? What if all the classes are equally important, then how to denote TP and TN?
Q2: How to calculate the F1 score? should it be done separately for each class? If then there will be multiple TN's w.r.t each class !!
Can somebody please help clear these confusions? Thank you.