Some questions about Pascal Voc Evaluation index

[cape-zck]

Thank you for your work, I would like to know that in your work, Table 7 is about the performance on VOC. May I ask whether these evaluation indicators, such as AP and AP50, are calculated according to the COCO dataset？
When I independently trained RetinaNet-RestNet50 on VOC dataset without distillation, if according to the evaluation index of COCO, AP only reached 54.1, but AP50 could reach 82.4, I am quite confused about this. Could you please give me some suggestions.