Figure 1.
The line chart plots mean f 1 score from 0 to 1 against C P V sectors 33100, 33140, 33141, 33600, 33690, 34144, 34300, 45000, 45233, 60130, 66510 and 90500 for 2018 to 2021. Scores are generally high at 33100 to 33690, mostly about 0.8 to 0.93. They fall at 34144 to about 0.35 to 0.47, rise at 34300 to about 0.63 to 0.91, and decline again at 60130 to about 0.26 to 0.38. At 66510, 2018 reaches about 0.84 while the other years are about 0.52 to 0.55. At 90500, values range from about 0.67 to 0.80.Mean F1 Score evolution by CPV category – average across 10%, 50% and 100% negative samples
Note(s): F1 combines precision and recall into a single metric ranging from 0 to 1, with higher values indicating stronger predictive performance. High F1 values indicate that the model identifies recurring buyer–supplier relationships both accurately (precision) and comprehensively (recall)