How to approximate unknown two-dimensional function?
I have a surface defined by values on a two-dimensional grid. I would like
to find an approximate function which would give me a value for any
arbitrary point within certain range of xs and ys.
My general idea is to construct some sort of polynomial, and then tweak
it's coefficients by using some sort of evolutionary algorithm until the
polynomial behaves as I want it to. But how should my polynomial look in
general?
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