_BASE_:['faster_rcnn_r50_1x_coco.yml',]pretrain_weights:https://paddle-imagenet-models-name.bj.bcebos.com/ResNet101_pretrained.tarweights:output/faster_rcnn_r101_1x_coco/model_finalResNet:# index 0 stands for res2depth:101norm_type:bnfreeze_at:0return_idx:[0,1,2,3]num_stages:4