$O(k)$-Equivariant Dimensionality Reduction on Stiefel Manifolds

Andrew Lee, Harlin Lee, Jose A. Perea +2

Many real-world datasets live on high-dimensional Stiefel and Grassmannian manifolds, $V_k({\mathbb{R}}^N)$ and $Gr(k,{\mathbb{R}}^N)$ respectively, and benefit from projection onto l…