Author

Lorenzo Beretta

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Preprint Aug 2026

A Tight Analysis of Khatri-Rao Oblivious Subspace Embeddings

It is proved that sketching dimension m = O(k^{3/2}/\epsilon^2) suffices for subspace embedding with a Khatri-Rao sketching matrix with any fixed order $d$.

Lorenzo Beretta, Cameron Musco · 0 citations