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kernel.py: maternp_covariance_ii_or_tt(): Remove small nugget#2

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jbect wants to merge 1 commit intogpmp-dev:mainfrom
jbect:remove-nugget
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kernel.py: maternp_covariance_ii_or_tt(): Remove small nugget#2
jbect wants to merge 1 commit intogpmp-dev:mainfrom
jbect:remove-nugget

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@jbect jbect commented Jan 14, 2024

I suggest to remove the (small) nugget in maternp_covariance_ii_or_tt(), which IMHO serves no real purpose.

The way I see it: either the correlation matrix is properly conditioned, and the small nugget won't make a difference, or it is not, and then it is very unlikely that such small nugget will restore a proper conditioning.

Just my two cents.

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