A list of orthogonal functions.
Function bases are useful in function representation, because they make function representation equivalent to vector representation (see Eliasmith & Anderson, 2003). Essentially, functions in an orthogonal basis correspond to dimensions in a vector. Cosine tuning curves in a vector space are equivalent to inner-product tuning curves in the corresponding function space.
Examples of orthogonal sets of functions include Fourier and wavelet bases.
@author Bryan Tripp
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