Table 2.

Performance metrics of the support vector machine models for the prediction of the different microbial populations of chicken liver inoculated with Salmonella stored under aerobic conditions at isothermal and dynamically changing conditions.

Metrics	Total viable counts	Pseudomonas spp.	Brochothrix thermosphacta	Lactic acid bacteria	Enterobacteriaceae	Salmonella
	Mean ± SDa	Mean ± SD	Mean ± SD	Mean ± SD	Mean ± SD	Mean ± SD
	(upper, lower CI)	(upper, lower CI)	(upper, lower CI)	(upper, lower CI)	(upper, lower CI)	(upper, lower CI)
R2	0.728 ± 0.027	0.730 ± 0.031	0.725 ± 0.028	0.828 ± 0.020	0.719 ± 0.036	0.708 ± 0.027
	(0.721, 0.735)	(0.722, 0.739)	(0.717, 0.733)	(0.822, 0.833)	(0.709, 0.729)	(0.701, 0.716)
RMSE	0.837 ± 0.040	0.827 ± 0.051	0.841 ± 0.049	0.664 ± 0.039	0.847 ± 0.053	0.863 ± 0.044
	(0.826, 0.847)	(0.813, 0.841)	(0.828, 0.855)	(0.653, 0.675)	(0.832, 0.861)	(0.851, 0.875)
Af	1.098 ± 0.005	1.095 ± 0.007	1.096 ± 0.006	1.071 ± 0.005	1.095 ± 0.007	1.102 ± 0.005
	(1.097, 1.100)	(1.093, 1.097)	(1.095, 1.098)	(1.070, 1.073)	(1.093, 1.097)	(1.100, 1.103)
Bf	1.017 ± 0.009	1.012 ± 0.008	1.008 ± 0.009	1.005 ± 0.007	1.016 ± 0.009	0.995 ± 0.007
	(1.014, 1.019)	(1.009, 1.014)	(1.005, 1.010)	(1.003, 1.007)	(1.014, 1.019)	(0.993, 0.997)
Accuracy (%)	74.234 ± 2.733	73.572 ± 3.239	75.338 ± 2.977	85.669 ± 2.667	75.090 ± 3.086	73.076 ± 2.603
	(73.477, 74.992)	(72.675, 74.470)	(74.513, 76.163)	(84.930, 86.408)	(74.234, 75.945)	(72.354, 73.797)

^aTotal of 50 iterations.

CI, 95% confidence interval; R², coefficient of determination; RMSE, root mean square error (log CFU/g); A_f, accuracy factor; B_f, bias factor.