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description: Train and optimize custom object detection models with Ultralytics DetectionTrainer and train functions. Get started with YOLO v8 today.
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# DetectionTrainer
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:::ultralytics.yolo.v8.detect.train.DetectionTrainer
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# Loss
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:::ultralytics.yolo.v8.detect.train.Loss
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# train
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:::ultralytics.yolo.v8.detect.train.train
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