1.Train it first on 1 GPU for like 1000 iterations: darknet.exe detector train cfg/coco.data … See more

(to train old Yolo v2 yolov2-voc.cfg, yolov2-tiny-voc.cfg, yolo-voc.cfg, yolo-voc.2.0.cfg, ... click by the link)
Training Yolo v4 (and v3):
1.For traini… See more

Usually sufficient 2000 iterations for each class(object), but not less than number of training images and not less than 6000 iterations in total. But for a more precise definition w… See more

1.Before training:
•set flag random=1 in your .cfg-file - it will increase precision by training Yolo for different resolutions: link
•increase n… See more

Here you can find repository with GUI-software for marking bounded boxes of objects and generating annotation files for Yolo v2 - v4: … See more