When I use 100 data, the roc curve looks much like squares. But when the number of data increases, the square shape fades. Is it normal for the ROC curve to look like in picture b for many data. (for example:700 data)?
figure 1 is for fewer datasets and figure 2 is for large datasets. Can anyone tell me the reason behind the difference between the two graphs? is it only because of the data number or is there any error for the second graph?
