Print mAP, AP while training on CenterNet

[anhhaidayx]

Hello everyone!
I'm new at PyTorch and DeepLearning, i just learned CenterNet and it's very helpful for me to learn model and backbone for my personal project. But i don't know how to print "mAP" or "AP" or something like that to draw a graph to evaluate the model, i saw "loss", "hm_loss" "wh_loss", "off_loss" on terminal, but i don't know how to print "AP", "Recall". Someone can help me to solve this problem? Thanks you very muchhhhhh!