metadata
description: >-
Learn about the DetectionTrainer class for training YOLO models on custom
datasets. Discover methods, examples, and more.
keywords: >-
Ultralytics, YOLO, DetectionTrainer, training, object detection, machine
learning, build dataset, dataloader, detection model
Reference for ultralytics/models/yolo/detect/train.py
!!! Note
This file is available at [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/models/yolo/detect/train.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/models/yolo/detect/train.py). If you spot a problem please help fix it by [contributing](https://docs.ultralytics.com/help/contributing/) a [Pull Request](https://github.com/ultralytics/ultralytics/edit/main/ultralytics/models/yolo/detect/train.py) 🛠️. Thank you 🙏!