Off-Diagonal Orthogonal Regularization
Off-Diagonal Orthogonal Regularization
**Off-Diagonal Orthogonal Regularization** is a modified form of [orthogonal regularization](https://paperswithcode.com/method/orthogonal-regularization) originally used in [BigGAN](https://paperswithcode.com/method/biggan). The original orthogonal regularization is known to be limiting so the authors explore several variants designed to relax the constraint while still imparting the desired smoothness to the models. They opt for a modification where they remove diagonal terms from the regularization, and aim to minimize the pairwise cosine similarity between filters but does not constrain their norm:

$$ R\_{\beta}\left(W\right) = \beta|| W^{T}W \odot \left(\mathbf{1}-I\right) ||^{2}\_{F} $$

where $\mathbf{1}$ denotes a matrix with all elements set to 1. The authors sweep $\beta$ values and select $10^{−4}$.
Large Scale GAN Training for High Fidelity Natural Image Synthesis
https://paperswithcode.com/paper/large-scale-gan-training-for-high-fidelity
Large Scale GAN Training for High Fidelity Natural Image Synthesis