SMTorg / smt / 9873934301

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Class based kernels for kriging (#622)

* Begin writing hessian, unfinished, untested

* Write derivatives, untested

* Writes spatial derivatives, untested

* Little modification

* Solving bug in hessian in progress

* Working on hessian

* Fix hessian

* Bug fixing for spatial derivative

* Debugging of test prediction in progress

* New file for extended kernel definition

* Commit for debugging of spatial derivatives

* Clean comments and print + ruff

* Fix bug in order of test

* Begin writing hessian, unfinished, untested

* Write derivatives, untested

* Writes spatial derivatives, untested

* Little modification

* Solving bug in hessian in progress

* Working on hessian

* Fix hessian

* Bug fixing for spatial derivative

* Debugging of test prediction in progress

* New file for extended kernel definition

* Commit for debugging of spatial derivatives

* Clean comments and print + ruff

* Fix bug in order of test

* Remove kernel file

* Typo

* Readd kernel file

* New test for squar_sin_exp

new definition of a problem for squar_sin_exp,
as the previous one was modeled by a constant line in one direction,
creating a division by zero in the computation of the relative error.
Also, a new computation for the error on the derivative of the variance
is introduced, in order to account for when value can be so close
to zero that the relative difference doesn't make much sense anymore.

* First link between kernel and kriging

* first complete lock

* Interfacing of smt with kernels

To do : finish cleaning, modify test_krg_training to test the actual kernels, remove kernels from utils.kriging

* Bug fix in tests

* Last commit before cleaning

* Cleaning of comments

* Apply ruff

* Last removal of comments

269 of 271 new or added lines in 6 files covered. (99.26%)

6869 of 7494 relevant lines covered (91.66%)

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