Estimation of Acetic Acid Concentration from Biogas Samples Using Machine Learning

Table 5

An example of manual cross-validation between training and test data.

Split	Training data				Test data
1	Sample 41	Sample 79	…	Sample 35	Sample 86	…	Sample 32
2	Sample 26	Sample 56	…	Sample 23	Sample 4	…	Sample 65
…	…	…	…	…	…	…
50	Sample 62	Sample 42	…	Sample 31	Sample 21	…	Sample 7