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. 2020 Oct 6;2020:8889023. doi: 10.1155/2020/8889023

Table 3.

Performance of augmented image-based models on training, internal validation, and external validation images.

Results of the training and internal validation (N = 317) Results of the external validation (N = 110)
Augmentation type Training accuracy (N = 286) Validation accuracy (N = 31) Validation loss Normal (N = 7) COVID-19 (N = 5) New COVID-19 (N = 75) Non-COVID-19 (N = 2) Pneumonia (N = 16) Tuberculosis (N = 5)
Rotate 120° 100 62 1.49 14.2 20 14.67 100 100 100
Rotate 140° 100 81.2 0.74 100 100 94.67 0 93.75 0