I’d like to compute the Hessian for array values and to get some array with dimension (2,2) but instead I got this julia> hessian(x -> sum(x.^3), [1 2; 3 4]) # uses linear indexing of x 4×4 Array{$Int,2}: 6 0 0 0 0 18 0 0 0 0 12 0 0 0 0 24 If I use the 2 x 10 array then …

[image] Sunny: I mean that I’d like to have the result with three dimensions (2,2,2) for 2x2 array and the hessian with shape (2,2,10) for (2,10) array This makes me think you actually have a \mathbb{R}^2\rightarrow\mathbb{R} function and you want to evaluate the hessian at n distinct points…

Fast Hessian size increase

Specific Domains Numerics

Sunny March 19, 2021, 6:17pm 4

Yes, sorry.
I mean that I’d like to have the result with three dimensions (2,2,2) for 2x2 array and
the hessian with shape (2,2,10) for (2,10) array

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Fast Hessian size increase

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