Table 33 Comparative analysis of clinical translation via cross-institutional and LOSO validation.

From: A federated learning-based privacy-preserving image processing framework for brain tumor detection from CT scans

Model

Cross-institutional accuracy (%)

LOSO accuracy (%)

AUC-ROC (%)

Dice coefficient (%)

Remarks

Aniso-ResCapHGBO-Net (Proposed)

98.91

97.80

99.80

96.10

High generalizability, preserves privacy, robust to institutional variance

CNN

93.24

91.05

94.80

88.30

Moderate generalization; overfits local features

dResU-Net

95.63

93.80

96.50

91.50

Strong segmentation, moderate cross-site stability

CapsuleNet

94.88

92.30

95.70

89.90

Good spatial sensitivity; lower precision across sites

SVM

89.41

87.05

90.60

80.40

Lower adaptability to heterogeneity

KNN

86.22

84.35

88.20

78.50

Limited scalability; less robust in cross-domain applications