Is this yolov4?

[RicRicci22]

Hi @Tianxiaomo, thank you for the repository, It has been very useful for my thesis! One question bothers me btw. I started my with no knowledge about yolo or object detection.. and I tought this was yolov4. Now after a lot of searching and studiyng I came to the conclusion that this is more similar to yolov3 than yolov4. I mean, the network is identical to yolov3, the cost function is yolov3. The only add is the CIOU, but given that it is not added to the cost function is only used to select the target bbox to update, so I don't know if it changes anything at all. Don't get me wrong, this repo is lit, but it is simply not yolov4, am I wrong?

Riccardo