$XX^{t}$ Can Be Faster — mentioned by TimorousBestie

Sun, 19 Jul 2026 04:24:49 GMT

If you’re interested, I found https://arxiv.org/abs/2505.09814v1 to beat Strassen for medium-sized and larger covariance matrices. YMMV of course. Takes a little adjustment for XX^H but it’s not so bad.

Paper and discussion history. A mention is not an endorsement.

$XX^{t}$ Can Be Faster — HN submission

Fri, 16 May 2025 15:45:30 GMT

X X^t can be faster

201 points; 60 discussion replies on HN. Paper and source history. A submission is not an endorsement.

$XX^{t}$ Can Be Faster · HackerPapers discussions

$XX^{t}$ Can Be Faster — mentioned by TimorousBestie

$XX^{t}$ Can Be Faster — HN submission