Eq. (6) in your AAAI'25 manuscript.

[ZhiyeTang]

Eq. (6) in your manuscript is an adaptation of Eq. (5) of the Octree-GS paper. However, your equation's $\max$ operator seems to be a $\min$ because upper_level($d$) seems to be $\le K-1$, not $\ge K-1$.