why do I achived 84.8 miou on test data with the pretrained model

[mengpengfei]

why I got 84.8 miou on test data with the pretrained model？
but the paper got 85.6

[focusOnxx]

Hello！
I want to know where is the function named get_aspp in models/basic.py?
I can not find it in models/utils.py.