Before revision:  Without additional pre-training, CBNetV2 can be integrated into mainstream detectors, including one-stage and two-stage detectors , as well as anchor-based and anchor-free-based ones, and significantly improve their performance by more than 3.0\% AP over the baseline on COCO. Also, experiments provide strong evidence showing that composite backbones are more efficient  and resource-friendly than pre-trained wider and deeper networks  ,
After revision:  Without additional pre-training, CBNetV2 can be integrated into mainstream detectors, including one-stage and two-stage detectors , as well as CNN-based and Transformer-based ones. Experiments provide strong evidence showing that composite backbones are more efficient and resource-friendly than pre-trained wider and deeper networks ,