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Table 4 Classification results for suicidal ideation based on acoustic and linguistic features

From: Acoustic and language analysis of speech for suicidal ideation among US veterans

Feature set

Model

Specificity

(std)

Sensitivity (std)

PPV

(std)

NPV

(std)

Accuracy

(std)

AUC

(std)

F1

(std)

Acoustic

KNN

0.52 (0.23)

0.78 (0.13)

0.21 (0.03)

0.94 (0.06)

0.55 (0.19)

0.69 (0.11)

0.33 (0.07)

LR

0.64 (0.15)

0.78 (0.11)

0.26 (0.02)

0.95 (0.05)

0.66 (0.13)

0.78 (0.12)

0.38 (0.08)

RF

0.64 (0.12)

0.76 (0.17)

0.25 (0.03)

0.94 (0.05)

0.65 (0.09)

0.76 (0.06)

0.36 (0.04)

SVM

0.54 (0.30)

0.74 (0.18)

0.21 (0.04)

0.93 (0.07)

0.56 (0.25)

0.63 (0.25)

0.33 (0.10)

XGB

0.74 (0.21)

0.67 (0.18)

0.29 (0.04)

0.93 (0.06)

0.73 (0.17)

0.77 (0.08)

0.43 (0.12)

DNN

0.70 (0.06)

0.66 (0.20)

0.26 (0.03)

0.93 (0.03)

0.70 (0.05)

0.75 (0.06)

0.35 (0.08)

Linguistic

KNN

0.69 (0.15)

0.38 (0.14)

0.16 (0.03)

0.87 (0.05)

0.65 (0.11)

0.52 (0.07)

0.22 (0.03)

LR

0.57 (0.24)

0.66 (0.20)

0.20 (0.05)

0.91 (0.07)

0.58 (0.18)

0.62 (0.06)

0.29 (0.04)

RF

0.64 (0.17)

0.76 (0.09)

0.26 (0.09)

0.94 (0.08)

0.65 (0.14)

0.74 (0.07)

0.38 (0.09)

SVM

0.63 (0.33)

0.48 (0.40)

0.13 (0.09)

0.88 (0.08)

0.61 (0.24)

0.49 (0.15)

0.19 (0.14)

XGB

0.70 (0.16)

0.67 (0.17)

0.27 (0.08)

0.93 (0.05)

0.69 (0.13)

0.72 (0.04)

0.37 (0.06)

DNN

0.50 (0.15)

0.66 (0.25)

0.16 (0.04)

0.90 (0.06)

0.52 (0.11)

0.63 (0.14)

0.25 (0.07)

Acoustic and Linguistic

KNN

0.61 (0.22)

0.78 (0.22)

0.26 (0.09)

0.94 (0.06)

0.63 (0.19)

0.69 (0.15)

0.37 (0.11)

LR

0.74 (0.14)

0.78 (0.19)

0.35 (0.14)

0.95 (0.05)

0.75 (0.11)

0.77 (0.12)

0.46 (0.13)

RF

0.70 (0.16)

0.84 (0.09)

0.32 (0.08)

0.96 (0.08)

0.72 (0.13)

0.80 (0.06)

0.45 (0.09)

SVM

0.86 (0.13)

0.52 (0.32)

0.32 (0.21)

0.92 (0.05)

0.82 (0.09)

0.64 (0.27)

0.38 (0.24)

XGB

0.79 (0.11)

0.74 (0.18)

0.37 (0.11)

0.95 (0.05)

0.78 (0.08)

0.77 (0.05)

0.47 (0.07)

DNN

0.68 (0.06)

0.70 (0.15)

0.24 (0.04)

0.93 (0.03)

0.68 (0.04)

0.77 (0.08)

0.36 (0.05)