Package smile.math

Interface Function

All Superinterfaces:

Serializable

All Known Subinterfaces:

DifferentiableFunction, DotProductKernel, IsotropicKernel, RadialBasisFunction, Variogram

All Known Implementing Classes:

BinarySparseGaussianKernel, BinarySparseHyperbolicTangentKernel, BinarySparseLaplacianKernel, BinarySparseLinearKernel, BinarySparseMaternKernel, BinarySparsePolynomialKernel, BinarySparseThinPlateSplineKernel, Exp, ExponentialVariogram, Gaussian, GaussianKernel, GaussianRadialBasis, GaussianVariogram, HyperbolicTangent, HyperbolicTangentKernel, InverseMultiquadricRadialBasis, Kurtosis, Laplacian, LaplacianKernel, LinearKernel, LogCosh, Matern, MaternKernel, MultiquadricRadialBasis, Polynomial, PolynomialKernel, PowerVariogram, Scaler, SparseGaussianKernel, SparseHyperbolicTangentKernel, SparseLaplacianKernel, SparseLinearKernel, SparseMaternKernel, SparsePolynomialKernel, SparseThinPlateSplineKernel, SphericalVariogram, ThinPlateRadialBasis, ThinPlateSpline, ThinPlateSplineKernel

public interface Function
extends Serializable

An interface representing a univariate real function.

Method Summary

Modifier and Type	Method	Description
default double	apply(double x)	Computes the value of the function at x.
double	f(double x)	Computes the value of the function at x.
default double	inv(double x)	Computes the value of the inverse function at x.

Method Details

f

double f(double x)

Computes the value of the function at x.

Parameters:

x - a real number.

Returns:

the function value.

inv

default double inv(double x)

Computes the value of the inverse function at x.

Parameters:

x - a real number.

Returns:

the inverse function value.

apply

default double apply(double x)

Computes the value of the function at x. It delegates the computation to f(). This is simply for Scala convenience.

Parameters:

x - a real number.

Returns:

the function value.