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Table 4 DC characterization results for different classification methods. All methods had a very small accuracy difference within 2% compared to the proposed method. Statistically significant differences (p < 0.05) compared with ‘RF’, ‘Adaboost’, ‘SVM’, ‘FFNN’, and ‘RBFNN’ are indicated by ‘*’, ‘γ’, ‘†’, ‘ψ’, and ‘δ’, respectively, as determined from the student’s t-test. Data are shown as mean ± standard deviation

From: Automated classification of dense calcium tissues in gray-scale intravascular ultrasound images using a deep belief network

Methods

PPV (%)

NPV (%)

Sensitivity (%)

Specificity (%)

Accuracy (%)

AUC

RF

87.1 ± 0.1

87.7 ± 0.1

87.1 ± 0.1

87.8 ± 0.1

87.4 ± 0.1

0.874 ± 0.003

Adaboost

87.1 ± 0.1

86.3 ± 0.1

87.3 ± 0.2

86.1 ± 0.1

86.7 ± 0.1

0.867 ± 0.002

SVM

87.7 ± 0.1

89.8 ± 0.1

88.0 ± 0.0

89.6 ± 0.0

88.8 ± 0.1

0.888 ± 0.001

FFNN

83.6 ± 0.2

93.3 ± 0.1

94.2 ± 0.3

81.4 ± 0.1

87.8 ± 0.2

0.885 ± 0.001

RBFNN

85.9 ± 0.1

89.8 ± 0.1

85.1 ± 0.1

90.3 ± 0.1

87.7 ± 0.1

0.878 ± 0.001

Proposed Method

86.0 ± 0.1ψ

91.2 ± 0.1*γ

91.8 ± 0.1*γ†δ

85.1 ± 0.1†ψδ

88.4 ± 0.1

0.886 ± 0.001