Table 2 Performed external validating measures of spectral clustering on the labeled ground truth data DB1
From: Semi-supervised clustering of fractionated electrograms for electroanatomical atrial mapping
(a) Performance using \({\varXi }\) | ||
|---|---|---|
Acc. | Spec. | Sens. |
 47.55 | 93.47 | 84.31 |
| Â | 53.34 | 76.00 |
| Â | 85.05 | 11.48 |
| Â | 100.0 | 1.88 |
(b) Performance using \({\varXi }^{*}\) | ||
|---|---|---|
Acc. | Spec. | Sens. |
 77.62 | 98.91 | 71.24 |
| Â | 85.87 | 78.66 |
| Â | 88.61 | 84.45 |
| Â | 97.07 | 75.47 |
(c) Confusion matrix using \({\varXi }^{*}\) | ||||
|---|---|---|---|---|
| Â | \(\#0\) | \(\#1\) | \(\#2\) | \(\#3\) |
 \(\#0\) | 113 | 36 | 1 | 3 |
 \(\#1\) | 1 | 66 | 8 | 0 |
 \(\#2\) | 0 | 18 | 115 | 15 |
 \(\#3\) | 0 | 0 | 14 | 39 |
(d) Accuracy of different sets | ||
|---|---|---|
Morphology-based | Non-linear | Raw waveform |
 69.46 % | 70.86 % | 36.6 % |