How to train the RPN?

[mlzxy]

Hi,

I try to retrain the coco_48_rpn model with rpn_R_50_C4_1x.yaml and datasets coco_2017_ovd_b_train. But I only get AR 40.1 on coco_2017_ovd_all_test, while your pretrained checkpoint has an AR around 44.2.

Would you share some training details about the RPN network? I really appreciate your help!

[YiwuZhong]

I don't quite remember the training details of the RPN network. Have you ever tried training RPN for a longer time, such as a 3x schedule?