Fig. 3
From: Automatic sleep stage classification based on subcutaneous EEG in patients with epilepsy
Confusion matrices for the five- and two-class problems. Each entry in the matrices provides the percentage P of epochs known to belong to class i that were classified as belonging to class j, for \(i,j \in \{1, \ldots \text {NumberOfClasses}\), and the raw count. The percentage P in the diagonal equals the class sensitivity. The coloring reflects the magnitude of P, which ranges from 0 to 100 \(\%\)