Multiplying a matrix by a matrix is a lot more expensive than a vector by a matr... | Hacker News

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		jules on Dec 27, 2017 \| parent \| context \| favorite \| on: Power Method for Approximating Eigenvalues [pdf] Multiplying a matrix by a matrix is a lot more expensive than a vector by a matrix.

nimish on Dec 27, 2017 [–]

Yeah and if you're gonna go matrix matrix you might as well do the QR method

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