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description: Learn about Varifocal Loss and Keypoint Loss in Ultralytics YOLO for advanced bounding box and pose estimation. Visit our docs for more.
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# VarifocalLoss
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:::ultralytics.yolo.utils.loss.VarifocalLoss
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# BboxLoss
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:::ultralytics.yolo.utils.loss.BboxLoss
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# KeypointLoss
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:::ultralytics.yolo.utils.loss.KeypointLoss
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# v8DetectionLoss
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:::ultralytics.yolo.utils.loss.v8DetectionLoss
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# v8SegmentationLoss
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:::ultralytics.yolo.utils.loss.v8SegmentationLoss
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# v8PoseLoss
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:::ultralytics.yolo.utils.loss.v8PoseLoss
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# v8ClassificationLoss
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:::ultralytics.yolo.utils.loss.v8ClassificationLoss
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