训练中loss确实是处于下降趋势的，但前面的epoch验证的MAP处于下降趋势是什么原因呢

[Astroooh]

第10epoch,map50为0.7 20epoch,map50为0.55 30epoch,map50为0.64 40 0.54 50 0.46 60 0.6 70 0.53 80 0.71 90 0.42

[FateScript]

Some idea that might help you: (1) check if your benchmark good enough to evaluate your model. (2) are you using pretrained model ? ( Your mAP is 0.7 in epoch 10)