_BASE_:['../datasets/sniper_coco_detection.yml','../runtime.yml','../faster_rcnn/_base_/optimizer_1x.yml','../faster_rcnn/_base_/faster_rcnn_r50.yml','_base_/faster_reader.yml',]pretrain_weights:https://paddledet.bj.bcebos.com/models/faster_rcnn_r50_vd_1x_coco.pdparamsweights:output/faster_rcnn_r50_vd_1x_coco/model_finalResNet:# index 0 stands for res2depth:50variant:dnorm_type:bnfreeze_at:0return_idx:[2]num_stages:3