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You missed my point entirely. My point is that showing something is a universal function approximator indicates nothing about whether that method is a good meth

You missed my point entirely. My point is that showing something is a universal function approximator indicates nothing about whether that method is a good method in general. Necessary but not sufficient. kNN is one of the dumbest/simplest methods out there.

return0 10y ago
a good method for what?
- argonaut 10y ago
  For machine learning. For solving problems. What else? A Fourier series can model pretty much any function. Doesn't mean it's a good model for your problem.