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. 2022 Jul 4;10:924432. doi: 10.3389/fpubh.2022.924432

Table 1.

Comparison and limitations of previous studies.

Publication Model Accuracy Dataset Limitations
Swain et al. (4) SVM 98.13% Private • Dataset is small
Nanglia et al. (5) KNN+ SVM + DT 78% Private • Less accuracy
• Required hand crafted features
Krizhevsky et al. (7) SVM 88% Private • Required hand crafted features
• Dataset is not available publically
Dhabyani, et al. (10) AlexNett+ VGG 16+ Inception+ Res net+ Nasnet 78%, 88%, 85%, 93%, 94%, 80%, 82%, 80%, 90%, 92% Public • Less accuracy
Spanhol et al. (11) SVM 80% Private • Less accuracy
• Required hand-crafted features
Yap et al. (12) AlexNet 91%, 89% Private • Use of imbalanced dataset
• Dataset is small
Saber et al. (14) Inception v3 + Resnet 50+ VGG 16+ VGG 19 96%, 94%, 96%, 95% Public • Dataset is small
• Lack of diverse dataset