org.apache.commons.math.optimization.fitting
Interfaces 
ParametricRealFunction
Classes 
CurveFitter
GaussianDerivativeFunction
GaussianFitter
GaussianFunction
GaussianParametersGuesser
HarmonicCoefficientsGuesser
HarmonicFitter
HarmonicFunction
ParametricGaussianFunction
PolynomialFitter
WeightedObservedPoint