Given a symmetric matrix mP, what would be the fastest way to calculate the matrix quadratic form vX' * mP * vX?
Will it give extra performance if mP is positive definite?
Please address both the dense and the sparse case.
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Royi
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Cross-post: https://discourse.julialang.org/t/most-efficient-way-to-compute-a-quadratic-matrix-form/66606 – giordano Aug 18 '21 at 18:24
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Related to https://stackoverflow.com/questions/70645845. – Royi Jan 11 '22 at 07:07