Using ctr sampling without "centerness".

[ahyunSeo]

Hello,

Thank you for your nice work.
Have you ever tried a model using ctr. sampling that does not have "centerness" branch?
As someone else mentioned in the issue, the centerness score of the sampled center points will be similar.
I wonder whether the "centerness" itself still gives an improvement.

Best,

Ahyun Seo