I have a complicated loss function a(x, y)
that takes a long time to compute. But I have 2 similar loss functions b(x, y)
and c(x, y)
that each capture some aspects of a(x, y)
.
How could I easiest find f()
and g()
such that a(x, y) = f(b(x, y)) + g(c(x, y))
?
I can sample any data x
, y
to try these functions. Would I do some curve fitting or evolutionary coding to get somewhere? I can try guessing but that will only get me so far.
Here are some quick values from inserting semi-arbitrary values to a
, b
, and c
: