How to interpret the background class in confusion matrix?

[Shuixin-Li]

Before Asking

• I have read the README carefully. 我已经仔细阅读了README上的操作指引。

• I want to train my custom dataset, and I have read the tutorials for training your custom data carefully and organize my dataset correctly; (FYI: We recommand you to apply the config files of xx_finetune.py.) 我想训练自定义数据集，我已经仔细阅读了训练自定义数据的教程，以及按照正确的目录结构存放数据集。（FYI: 我们推荐使用xx_finetune.py等配置文件训练自定义数据集。）

• I have pulled the latest code of main branch to run again and the problem still existed. 我已经拉取了主分支上最新的代码，重新运行之后，问题仍不能解决。

Search before asking

• I have searched the YOLOv6 issues and found no similar questions.

Question

In yolov5 repo, they improve the confusion matrix with background FN and background FP.
details see question 2071 in yolov5 repo

I still got the confusion matrix output like the old-version yolov5 confusion matrix.
I would like to know how to interpret the background FN and background FP in the confusion matrix in yolov6.

Additional

No response

[Chilicyy]

Thanks for your attention. Could you please upload the confusion matrix output that you got?

[Shuixin-Li]