Table 4.

Accelerometer-based cough detection results for the shallow classifiers. The values are averaged over 14 cross-validation folds. The highest AUC of 0.8587 has been achieved from an MLP classifier.

Classifier	ID	Best Feature	Best Classifier Hyperparameters	Performance
		Hyperparameters	(Optimised inside nested cross-validation)	Spec	Sens	Acc	AUC	${\sigma }_{\mathit{AUC}}$
LR	C1	$\mathrm{\Psi }=16$, $C=5$	${\gamma }_1={10}^{-4}$, ${\gamma }_2$ = 0.35, ${\gamma }_3$ = 0.65	80.41%	80.28%	80.35%	0.8055	0.003
	C2	$\mathrm{\Psi }=16$, $C=10$	${\gamma }_1={10}^{-2}$, ${\gamma }_2$ = 0.55, ${\gamma }_3$ = 0.45	80.25%	80.08%	80.16%	0.8058	0.003
	C3	$\mathrm{\Psi }=32$, $C=5$	${\gamma }_1={10}^2$, ${\gamma }_2$ = 0.2, ${\gamma }_3$ = 0.8	80.39%	80.55%	80.47%	0.8072	0.003
	C4	$\mathrm{\Psi }=32$, $C=10$	${\gamma }_1={10}^{-3}$, ${\gamma }_2$ = 0.4, ${\gamma }_3$ = 0.6	81.42%	81.28%	81.35%	0.8135	0.003
	C5	$\mathrm{\Psi }=64$, $C=5$	${\gamma }_1={10}^{-1}$, ${\gamma }_2$ = 0.25, ${\gamma }_3$ = 0.75	80.22%	80.41%	80.31%	0.8119	0.003
	C6	$\mathrm{\Psi }=64$, $C=10$	${\gamma }_1={10}^{-2}$, ${\gamma }_2$ = 0.75, ${\gamma }_3$ = 0.25	80.16%	80.32%	80.24%	0.8124	0.003
SVM	C7	$\mathrm{\Psi }=16$, $C=5$	${\gamma }_1={10}^3$, ${\gamma }_4={10}^{-3}$	80.71%	82.91%	81.81%	0.8202	0.003
	C8	$\mathrm{\Psi }=16$, $C=10$	${\gamma }_1={10}^{-2}$, ${\gamma }_4={10}^2$	80.22%	82.94%	81.58%	0.8248	0.003
	C9	$\mathrm{\Psi }=32$, $C=5$	${\gamma }_1={10}^3$, ${\gamma }_4={10}^{-2}$	80.41%	82.97%	81.69%	0.8212	0.003
	C10	$\mathrm{\Psi }=32$, $C=10$	${\gamma }_1={10}^{-1}$, ${\gamma }_4={10}^{-1}$	80.91%	84.11%	82.51%	0.8252	0.003
	C11	$\mathrm{\Psi }=64$, $C=5$	${\gamma }_1={10}^{-4}$, ${\gamma }_4={10}^{-3}$	80.28%	84.35%	82.31%	0.8245	0.003
	C12	$\mathrm{\Psi }=64$, $C=10$	${\gamma }_1={10}^2$, ${\gamma }_4={10}^{-4}$	80.55%	82.78%	81.68%	0.8251	0.003
MLP	C13	$\mathrm{\Psi }=16$, $C=5$	${\gamma }_3=0.55$, ${\gamma }_5=30$	82.37%	86.95%	84.68%	0.8507	0.003
	C14	$\mathrm{\Psi }=16$, $C=10$	${\gamma }_3=0.45$, ${\gamma }_5=50$	83.24%	87.08%	85.16%	0.8558	0.003
	C15	$\mathrm{\Psi }=32$, $C=5$	${\gamma }_3=0.35$, ${\gamma }_5=70$	83.55%	87.41%	85.47%	0.8552	0.003
	C16	$\mathrm{\Psi }=32$, $C=10$	${\gamma }_3=0.4$, ${\gamma }_5=20$	82.18%	86.05%	84.12%	0.8424	0.003
	C17	$\mathrm{\Psi }=64$, $C=5$	${\gamma }_3=0.7$, ${\gamma }_5=40$	84.47%	86.89%	85.67%	0.8587	0.003
	C18	$\mathrm{\Psi }=64$, $C=10$	${\gamma }_3=0.35$, ${\gamma }_5=30$	83.45%	86.84%	84.64%	0.8499	0.003