Table 1.

Overall accuracy for the chest x-rays (CXR)-COVID dataset.

Approach/Metrics	ACC(%)	DR(%)	FPR(%)
Generative Models
Gaussian Mixture	82.11	81.02	0.18
Gamma Mixture	85.22	83.76	0.16
Dirichlet Mixture	87.80	85.92	0.13
Scaled Dirichlet Mixture	87.96	86.02	0.13
Shifted Scaled Dirichlet Mixture	88.01	86.12	0.12
Hybrid Models
Gaussian Mixture + Fisher Kernel	83.43	82.29	0.17
Gaussian Mixture + Kullback–Leibler Kernel	83.27	82.20	0.17
Gaussian Mixture + Bhattacharyya Kernel	83.25	82.18	0.17
Gamma Mixture + Fisher Kernel	86.01	84.11	0.16
Gamma Mixture + Kullback–Leibler Kernel	85.99	84.08	0.16
Gamma Mixture + Bhattacharyya Kernel	85.94	84.03	0.16
generalized Gamma Mixture + Fisher Kernel	87.01	87.90	0.12
generalized Gamma Mixture + Kullback–Leibler Kernel	87.71	87.01	0.12
generalized Gamma Mixture + Bhattacharyya Kernel	87.67	86.96	0.12
Dirichlet Mixture + Fisher Kernel	87.80	85.92	0.13
Scaled Dirichlet Mixture + Fisher Kernel	87.96	86.02	0.13
Shifted Scaled Dirichlet Mixture + Fisher Kernel	88.81	86.91	0.11
Shifted Scaled Dirichlet Mixture + Kullback–Leibler Kernel	88.77	86.85	0.11
Shifted Scaled Dirichlet Mixture + Bhattacharyya Kernel	88.74	86.82	0.11