mmdetection/configs/pisa/retinanet-r50_fpn_pisa_1x_coco.py

_base_ = '../retinanet/retinanet_r50_fpn_1x_coco.py'

model = dict(
    bbox_head=dict(
        type='PISARetinaHead',
        loss_bbox=dict(type='SmoothL1Loss', beta=0.11, loss_weight=1.0)),
    train_cfg=dict(isr=dict(k=2., bias=0.), carl=dict(k=1., bias=0.2)))