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Table 3 Performance (five-fold cross validation) of the predictive models for each serotype when using PCC for feature selection. SVM: Support Vector Machine; Sn: Sensitivity; Sp: Specificity; Acc: Accuracy; MCC: Matthews Correlation Coefficient

From: Rapid classification of group B Streptococcus serotypes based on matrix-assisted laser desorption ionization-time of flight mass spectrometry and machine learning techniques

Serotype

Feature selection

Classifiers

Bin size

Number of features

Sn

Sp

Acc

MCC

I a

PCC

Random Forest

9

35

100.0%

96.1%

97.3%

0.939

SVM

9

28

100.0%

99.6%

99.8%

0.994

I b

Random Forest

3

38

100.0%

93.3%

95.3%

0.899

SVM

3

30

100.0%

99.3%

99.5%

0.988

III

Random Forest

6

7

91.0%

90.2%

90.5%

0.795

SVM

6

7

91.0%

89.7%

90.2%

0.789

V

Random Forest

9

46

100.0%

92.3%

94.6%

0.885

SVM

9

43

100.0%

99.6%

99.8%

0.994

VI

Random Forest

6

31

97.3%

91.6%

93.7%

0.872

SVM

7

18

94.6%

93.2%

93.7%

0.868