ca.nengo.math

Interface FunctionBasis

All Superinterfaces:

java.lang.Cloneable, Function, java.io.Serializable

All Known Implementing Classes:

FunctionBasisImpl

public interface FunctionBasis
extends Function

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.

Method Summary

Methods

Modifier and Type	Method and Description
int	getBasisDimension()
Function	getFunction(int basisIndex)
void	setCoefficients(float[] coefficients)

Methods inherited from interface ca.nengo.math.Function

clone, getDimension, map, multiMap

Method Detail

getBasisDimension

int getBasisDimension()

Returns:

Dimensionality of basis

getFunction

Function getFunction(int basisIndex)

Parameters:

basisIndex - Dimension index

Returns:

Basis function corresponding to given dimension

setCoefficients

void setCoefficients(float[] coefficients)

Parameters:

coefficients - Coefficient for summing basis functions