Table 1. Ablation experiments for VGG-based model, removing regularization terms (rows 2–5) and using factorized readout weights (row 6, [40]).

Model	FEV
Full model	0.52
No smoothness	0.51
No sparsity	0.49
No group sparsity	0.51
No regularization	0.33
Factorized readout [40]	0.45