Table 10.

Wilcoxon signed-rank test: proposed ensemble versus individual classifiers on Cleveland dataset

	RF	LR	SVM	ELM	KNN
E
Z-value${}^1$	− 2.668	− 2.312	− 2.655	− 2.810	− 2.803
p value${}^2$	$0.{004}^{\ast \ast }$	$0.{021}^{\ast }$	$0.{008}^{\ast \ast }$	$0.{002}^{\ast \ast }$	$0.{002}^{\ast \ast }$
Precision
Z-value	− 2.533	− 2.318	− 2.671	− 2.814	− 2.809
p value	$0.{011}^{\ast }$	$0.{016}^{\ast }$	$0.{006}^{\ast \ast }$	$0.{002}^{\ast \ast }$	$0.{002}^{\ast \ast }$
Recall
Z-value	− 2.668	− 2.173	− 2.524	− 2.668	− 2.668
p value	$0.{004}^{\ast \ast }$	$0.{031}^{\ast }$	$0.{008}^{\ast \ast }$	$0.{004}^{\ast \ast }$	$0.{004}^{\ast \ast }$
G-mean
Z-value	− 2.666	− 2.310	− 2.703	− 2.803	− 2.803
p value	$0.{004}^{\ast \ast }$	$0.{020}^{\ast }$	$0.{004}^{\ast \ast }$	$0.{002}^{\ast \ast }$	$0.{002}^{\ast \ast }$
MC
Z-value	− 2.668	− 2.312	− 2.655	− 2.810	− 2.803
p value	$0.{004}^{\ast \ast }$	$0.{020}^{\ast }$	$0.{006}^{\ast \ast }$	$0.{002}^{\ast \ast }$	$0.{002}^{\ast \ast }$
Specificity
Z-value	− 1.892	− 1.696	− 2.316	− 2.521	− 2.553
p value	0.094	0.101	$0.{023}^{\ast }$	$0.{008}^{\ast \ast }$	$0.{008}^{\ast \ast }$
AUC
Z-value	− 2.521	− 2.310	− 2.666	− 2.803	− 2.803
p value	$0.{008}^{\ast \ast }$	$0.{020}^{\ast }$	$0.{004}^{\ast \ast }$	$0.{002}^{\ast \ast }$	$0.{002}^{\ast \ast }$

${}^1$ The value of Wilcoxon statistics after standardization

${}^2$ ${}^{\ast }$ $p<0.05$, ${}^{\ast \ast }$ $p<0.01$