Difference from the APs of FCOS and ATSS from mmdetection

[youngwanLEE]

Hi,

I'm very impressed by your excellent work.

When I read and compared your experiments about FCOS and ATSS, I was confused by those values you mentioned in Table 2 (a).

	FCOS	ATSS
mmdet	38.6	39.4
yours(Dirac delta)	38.5	39.2

Could you explain what I missed?

Thanks

[implus]

Hi, a difference around ~0.1 AP is mainly the randomness fact (e.g., different initialization seeds). For example, the performance of GFL_r50_1x is usually 40.2, but sometimes you can get 40.3.

[implus]

And for an apple-to-apple fair comparison in ablation study, we run all experiments instead of just copying the results from other papers or repos.