Table 4.

Fine-tuning hyper parameter result.

Client	Non-i.i.d. Training	${\mathit{r}}_{\mathbf{fine}}$	${\mathit{N}}_{\mathbf{fine}}$
Site 2	Present	$1\times {10}^{-5}$	170
Stanford	Unseen	$1\times {10}^{-4}$	200
NYU axial knee	Unseen	$1\times {10}^{-4}$	200