Figure A1.
The line chart plots mean f 1 score from 0 to 1 for percentage negative levels of 10 per cent, 50 per cent and 100 per cent within 12 C P V sectors and test years 2018 to 2021. Scores are mostly about 0.8 to 0.93 across sectors 33100 to 33690, before falling at 34144 to roughly 0.33 to 0.52. Sector 34300 rises to about 0.59 to 0.93, while 45000 and 45233 mostly range from about 0.29 to 0.66. The lowest values occur around 60130, reaching approximately 0.18 to 0.47. Scores subsequently rise across 66510 and 90500, reaching about 0.65 to 0.81 at 90500.F1 Score evolution by CPV category under different negative sampling ratios