Before revision:  Our method achieves state-of-the-art performance on HACS Segments and THUMOS14 and competitive performance on  ActivityNet-1.3.
After revision:  Our method achieves state-of-the-art performance on HACS Segments and THUMOS14 (+5.0\% average mAP) and ActivityNet (+7.53\% average mAP). When combined with other detectors, it reports 54.1\% mAP at IoU=0.5 on ActivityNet-1.3.