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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
  53.34 76.00
  85.05 11.48
  100.0 1.88
(b) Performance using \({\varXi }^{*}\)
Acc. Spec. Sens.
 77.62 98.91 71.24
  85.87 78.66
  88.61 84.45
  97.07 75.47
(c) Confusion matrix using \({\varXi }^{*}\)
  \(\#0\) \(\#1\) \(\#2\) \(\#3\)
 \(\#0\) 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 %