Three examples of manually corrected associations before training. Each dashed red circle represents a separate catalogue entry. The left panel shows LoTSS-DR1 Stokes-I image and the initial human expert association, the right panel shows the LoTSS-DR2 Stokes-I image and the manually corrected association. Each row shows a different type of corrected association: the first stems from the improved quality of the LoTSS-DR2 images, the second shows a human error, the third stems from our decision to group image artefacts with the source they originate from.