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AssertionError: Label class 33 exceeds nc=3 in ././models/yolov5s.yaml. Correct your labels or your model. #4559

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sarj7 opened this issue Aug 27, 2021 · 3 comments
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@sarj7
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sarj7 commented Aug 27, 2021

i'm getting this error while training yolov5 on custom dataset. i have tried to resolve this error by following this thread. i have made sure that i have nc = 3 in dataset.yaml file as well as nc = 3 in yolov5s.yaml file as well.

Screenshot from 2021-08-27 12-31-52

i deleted the cache file as well. i've also made sure that .txt label file for each individual image has classes as 0,1 or 2. i don't where does this model picks number of classes = 33.

please help!

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github-actions bot commented Aug 27, 2021

👋 Hello @sarj7, thank you for your interest in YOLOv5 🚀! Please visit our ⭐️ Tutorials to get started, where you can find quickstart guides for simple tasks like Custom Data Training all the way to advanced concepts like Hyperparameter Evolution.

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Python>=3.6.0 with all requirements.txt installed including PyTorch>=1.7. To get started:

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@glenn-jocher
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@sarj7 the error message is self explanatory. Your labels contain classes up to 33, which is about 30 more classes than you've stated in your data.yaml.

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github-actions bot commented Sep 27, 2021

👋 Hello, this issue has been automatically marked as stale because it has not had recent activity. Please note it will be closed if no further activity occurs.

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