Expired65% confidenceFactExact time
Focal Loss was proposed by Kaiming He et al. in the 2017 RetinaNet paper to address the problem of extreme foreground-background sample imbalance in object detection.
3
Sources
65%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
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