A modeling study by response surface methodology and artificial neural network on culture parameters optimization for thermostable lipase production from a newly isolated thermophilic Geobacillus sp. strain ARM

Table 4 Actual and predicted lipase activity by ANN and RSM models along with absolute deviation, R² and AAD

Actual activity	ANN predicted activity	ANN absolute deviation	RSM predicted activity	RSM absolute deviation
0.2063	0.2063	0	0.2061	0.000969
0	0	0	0.00019	0
0.0207	0.0208	0.0048	0.0209	0.0097
0	0.0001	0	0.0002	0
0	0.0002	0	0.0002	0
0.0291	0.0291	0	0.0289	0.0069
0	0	0	0.0002	0
0.0886	0.0886	0	0.0888	0.0023
0.0724	0.0724	0	0.0722	0.0028
0	0	0	0.0002	0
0.0907	0.0908	0.0011	0.0909	0.0022
0.1945	0.1945	0	0.1947	0.001
0.04	0.04	0	0.04	0
0.0229	0.0227	0.0087	0.0229	0
0.0457	0.0457	0	0.0457	0
0.0551	0.0552	0.0018	0.0551	0
0	0	0	0	0
0.0841	0.084	0.0012	0.0841	0
0.0675	0.0677	0.003	0.0675	0
0	0	0	0	0
0.0851	0.0851	0	0.0851	0
0.0281	0.028	0.0044	0.0281	0
0	0	0	0	0
0	0	0	0	0
0.0467	0.0467	0	0.0465	0.0043
0	0.001	0	0.0002	0
0.0693	0.0692	0.0014	0.0691	0.0029
0.0792	0.0795	0.0038	0.0794	0.0025
0.0996	0.0992	0.004	0.0994	0.002

ISSN: 1472-6750