mmdetection/configs/mask_rcnn/mask-rcnn_r50-caffe_fpn_ms-poly-3x_coco.py

_base_ = './mask-rcnn_r50-caffe_fpn_ms-poly-1x_coco.py'

train_cfg = dict(max_epochs=36)
# learning rate
param_scheduler = [
    dict(
        type='LinearLR', start_factor=0.001, by_epoch=False, begin=0, end=500),
    dict(
        type='MultiStepLR',
        begin=0,
        end=24,
        by_epoch=True,
        milestones=[28, 34],
        gamma=0.1)
]