why run yolov1/tiny-yolo.cfg, Detection Avg IOU: -nan, Pos Cat: -nan, All Cat: -nan, Pos Obj: -nan, Any Obj: 0.000000, count: 0 about darknet

[WintonHuang]

maybe u have the wrong path that it cant get the image and "txt"

[xzy295461445]

do u solve this problem? i have the same problem.

[bohemian916]

I had the same problem. So I checkout older commit before v2 and follow the old instruction https://pjreddie.com/darknet/yolov1/

git checkout c71bff69eaf1e458850ab78a32db8aa25fee17dc
wget http://pjreddie.com/media/files/darknet.conv.weights

and edit src/yolo.c for training with custom dataset

18     char *train_images = "/home/pjreddie/data/voc/test/train.txt";
19     char *backup_directory = "/home/pjreddie/backup/";

and train

./darknet yolo train cfg/tiny-yolo.train.cfg darknet.conv.weights

it works for me

[Paul0M]

@issxjl2015 Met with the same problem when training on my own dataset. Figured out the reasion: absolute value of bbox . Fix: using relative values, <x> = <absolute_x> / <image_width> or <height> = <absolute_height> / <image_height>.