yolov8-to/docs/reference/utils/loss.md

metadata

description: >-
  Explore Ultralytics' versatile loss functions - VarifocalLoss, BboxLoss,
  v8DetectionLoss, v8PoseLoss. Improve your accuracy on YOLO implementations.
keywords: >-
  Ultralytics, Loss functions, VarifocalLoss, BboxLoss, v8DetectionLoss,
  v8PoseLoss, YOLO, Ultralytics Documentation

Reference for ultralytics/utils/loss.py

!!! note

Full source code for this file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/loss.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/loss.py). Help us fix any issues you see by submitting a [Pull Request](https://docs.ultralytics.com/help/contributing/) 🛠️. Thank you 🙏!

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::: ultralytics.utils.loss.VarifocalLoss

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::: ultralytics.utils.loss.FocalLoss

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::: ultralytics.utils.loss.BboxLoss

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::: ultralytics.utils.loss.KeypointLoss

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::: ultralytics.utils.loss.v8DetectionLoss

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::: ultralytics.utils.loss.v8SegmentationLoss

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::: ultralytics.utils.loss.v8PoseLoss

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::: ultralytics.utils.loss.v8ClassificationLoss