--- description: Learn about Varifocal Loss and Keypoint Loss in Ultralytics YOLO for advanced bounding box and pose estimation. Visit our docs for more. keywords: Ultralytics, YOLO, loss functions, object detection, keypoint detection, segmentation, classification --- # VarifocalLoss --- :::ultralytics.yolo.utils.loss.VarifocalLoss

# FocalLoss --- :::ultralytics.yolo.utils.loss.FocalLoss

# BboxLoss --- :::ultralytics.yolo.utils.loss.BboxLoss

# KeypointLoss --- :::ultralytics.yolo.utils.loss.KeypointLoss

# v8DetectionLoss --- :::ultralytics.yolo.utils.loss.v8DetectionLoss

# v8SegmentationLoss --- :::ultralytics.yolo.utils.loss.v8SegmentationLoss

# v8PoseLoss --- :::ultralytics.yolo.utils.loss.v8PoseLoss

# v8ClassificationLoss --- :::ultralytics.yolo.utils.loss.v8ClassificationLoss