sign fix for gradient blocks #2598
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@m-julian thanks for the PR! Would you be able to add a derivation of the gradient in the docstring of the kernel? |
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@gpleiss I've added the equations for the gradient and Hessian blocks. I've also linked to the initial PR in the docstring that contains a pdf file with the full derivations. That pdf should be correct, I just messed up the signs in the initial implementation. I've also added the Matern52KernelGrad to the |
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The sign of the first and second gradient blocks for the
Matern52KernelGradkernel was wrong. This PR should fix issue #2563. I've also updates the tests.