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Table 1 rRMSE and MAPE values for goodness-of-fit analyses

From: Early warning indicators for mesophilic anaerobic digestion of corn stalk: a combined experimental and simulation approach

Process variable R1 R2
rRMSE MAPE (%) rRMSE MAPE (%)
Day 0–165 Day 30–165 Day 0–165 Day 30–165 Day 0–165 Day 30–165 Day 0–165 Day 30–165
CH4 yield 0.41 0.23 57.58 19.78 0.28 0.12 39.79 11.30
CH4/CO2 2.44 2.79 31.21 31.38 1.33 1.24 25.72 25.30
Acetic acid conc. 0.73 0.64 52.20 43.14 0.85 0.87 54.15 52.13
Propionic acid conc. 1.21 1.30 79.02 78.46 0.94 0.95 64.93 61.18
Butyric acid conc. 0.20 0.20 61.81 60.36 0.24 0.23 70.44 68.74
Total VFA conc. 0.96 0.80 40.85 32.16 1.25 1.27 53.12 50.12