All Classes

Class	Description
AbstractContinuousDistribution	Base class for continuous distributions.
AbstractDistribution	Base class for probability distributions.
AbstractEstimator	Deprecated. as of 2.0, everything in package org.apache.commons.math.estimation has been deprecated and replaced by package org.apache.commons.math.optimization.general
AbstractFieldMatrix<T extends FieldElement<T>>	Basic implementation of FieldMatrix methods regardless of the underlying storage.
AbstractFormat	Common part shared by both FractionFormat and BigFractionFormat.
AbstractIntegerDistribution	Base class for integer-valued discrete distributions.
AbstractIntegrator	Base class managing common boilerplate for all integrators.
AbstractLeastSquaresOptimizer	Base class for implementing least squares optimizers.
AbstractLinearOptimizer	Base class for implementing linear optimizers.
AbstractListChromosome<T>	Chromosome represented by an immutable list of a fixed length.
AbstractMultipleLinearRegression	Abstract base class for implementations of MultipleLinearRegression.
AbstractRandomGenerator	Abstract class implementing the RandomGenerator interface.
AbstractRealMatrix	Basic implementation of RealMatrix methods regardless of the underlying storage.
AbstractRealVector	This class provides default basic implementations for many methods in the RealVector interface.
AbstractScalarDifferentiableOptimizer	Base class for implementing optimizers for multivariate scalar functions.
AbstractStepInterpolator	This abstract class represents an interpolator over the last step during an ODE integration.
AbstractStorelessUnivariateStatistic	Abstract implementation of the StorelessUnivariateStatistic interface.
AbstractUnivariateRealOptimizer	Provide a default implementation for several functions useful to generic optimizers.
AbstractUnivariateStatistic	Abstract base class for all implementations of the UnivariateStatistic interface.
AbstractWell	This abstract class implements the WELL class of pseudo-random number generator from François Panneton, Pierre L'Ecuyer and Makoto Matsumoto.
AdamsBashforthIntegrator	This class implements explicit Adams-Bashforth integrators for Ordinary Differential Equations.
AdamsIntegrator	Base class for Adams-Bashforth and Adams-Moulton integrators.
AdamsMoultonIntegrator	This class implements implicit Adams-Moulton integrators for Ordinary Differential Equations.
AdamsNordsieckTransformer	Transformer to Nordsieck vectors for Adams integrators.
AdaptiveStepsizeIntegrator	This abstract class holds the common part of all adaptive stepsize integrators for Ordinary Differential Equations.
AggregateSummaryStatistics	An aggregator for SummaryStatistics from several data sets or data set partitions.
AnyMatrix	Interface defining very basic matrix operations.
ArgumentOutsideDomainException	Error thrown when a method is called with an out of bounds argument.
ArgUtils	Utility class for transforming the list of arguments passed to constructors of exceptions.
Array2DRowFieldMatrix<T extends FieldElement<T>>	Implementation of FieldMatrix using a FieldElement[][] array to store entries.
Array2DRowRealMatrix	Implementation of RealMatrix using a double[][] array to store entries and LU decomposition to support linear system solution and inverse.
ArrayFieldVector<T extends FieldElement<T>>	This class implements the FieldVector interface with a FieldElement array.
ArrayRealVector	This class implements the RealVector interface with a double array.
Beta	This is a utility class that provides computation methods related to the Beta family of functions.
BetaDistribution	Computes the cumulative, inverse cumulative and density functions for the beta distribuiton.
BetaDistributionImpl	Implements the Beta distribution.
BicubicSplineInterpolatingFunction	Function that implements the bicubic spline interpolation.
BicubicSplineInterpolator	Generates a bicubic interpolating function.
BigFraction	Representation of a rational number without any overflow.
BigFractionField	Representation of the fractional numbers without any overflow field.
BigFractionFormat	Formats a BigFraction number in proper format or improper format.
BigMatrix	Deprecated. as of 2.0, replaced by FieldMatrix with a BigReal parameter
BigMatrixImpl	Deprecated. as of 2.0, replaced by Array2DRowFieldMatrix with a BigReal parameter
BigReal	Arbitrary precision decimal number.
BigRealField	Representation of real numbers with arbitrary precision field.
BinaryChromosome	Chromosome represented by a vector of 0s and 1s.
BinaryFunction	Deprecated. in 2.2
BinaryMutation	Mutation for BinaryChromosomes.
BinomialDistribution	The Binomial Distribution.
BinomialDistributionImpl	The default implementation of BinomialDistribution.
BisectionSolver	Implements the bisection algorithm for finding zeros of univariate real functions.
BitsStreamGenerator	Base class for random number generators that generates bits streams.
BivariateRealFunction	An interface representing a bivariate real function.
BivariateRealGridInterpolator	Interface representing a bivariate real interpolating function where the sample points must be specified on a regular grid.
BlockFieldMatrix<T extends FieldElement<T>>	Cache-friendly implementation of FieldMatrix using a flat arrays to store square blocks of the matrix.
BlockRealMatrix	Cache-friendly implementation of RealMatrix using a flat arrays to store square blocks of the matrix.
BracketFinder	Provide an interval that brackets a local optimum of a function.
BrentOptimizer	Implements Richard Brent's algorithm (from his book "Algorithms for Minimization without Derivatives", p.
BrentSolver	Implements the Brent algorithm for finding zeros of real univariate functions.
CardanEulerSingularityException	This class represents exceptions thrown while extractiong Cardan or Euler angles from a rotation.
CauchyDistribution	Cauchy Distribution.
CauchyDistributionImpl	Default implementation of CauchyDistribution.
ChiSquaredDistribution	The Chi-Squared Distribution.
ChiSquaredDistributionImpl	The default implementation of ChiSquaredDistribution
ChiSquareTest	An interface for Chi-Square tests.
ChiSquareTestImpl	Implements Chi-Square test statistics defined in the UnknownDistributionChiSquareTest interface.
CholeskyDecomposition	An interface to classes that implement an algorithm to calculate the Cholesky decomposition of a real symmetric positive-definite matrix.
CholeskyDecompositionImpl	Calculates the Cholesky decomposition of a matrix.
Chromosome	Individual in a population.
ChromosomePair	A pair of Chromosome objects.
ClassicalRungeKuttaIntegrator	This class implements the classical fourth order Runge-Kutta integrator for Ordinary Differential Equations (it is the most often used Runge-Kutta method).
Cluster<T extends Clusterable<T>>	Cluster holding a set of Clusterable points.
Clusterable<T>	Interface for points that can be clustered together.
CombinedEventsManager	Deprecated. as of 2.2, this class is not used anymore
Complex	Representation of a Complex number - a number which has both a real and imaginary part.
ComplexField	Representation of the complex numbers field.
ComplexFormat	Formats a Complex number in cartesian format "Re(c) + Im(c)i".
ComplexUtils	Static implementations of common Complex utilities functions.
ComposableFunction	Base class for UnivariateRealFunction that can be composed with other functions.
CompositeFormat	Base class for formatters of composite objects (complex numbers, vectors ...).
ConjugateGradientFormula	Available choices of update formulas for the β parameter in NonLinearConjugateGradientOptimizer.
ContinuedFraction	Provides a generic means to evaluate continued fractions.
ContinuousDistribution	Base interface for continuous distributions.
ContinuousOutputModel	This class stores all information provided by an ODE integrator during the integration process and build a continuous model of the solution from this.
ConvergenceException	Error thrown when a numerical computation can not be performed because the numerical result failed to converge to a finite value.
ConvergenceException	Error thrown when a numerical computation can not be performed because the numerical result failed to converge to a finite value.
ConvergingAlgorithm	Deprecated. in 2.2 (to be removed in 3.0).
ConvergingAlgorithmImpl	Deprecated. in 2.2 (to be removed in 3.0).
CorrelatedRandomVectorGenerator	A RandomVectorGenerator that generates vectors with with correlated components.
Covariance	Computes covariances for pairs of arrays or columns of a matrix.
CrossoverPolicy	Policy used to create a pair of new chromosomes by performing a crossover operation on a source pair of chromosomes.
CurveFitter	Fitter for parametric univariate real functions y = f(x).
DecompositionSolver	Interface handling decomposition algorithms that can solve A × X = B.
DefaultFieldMatrixChangingVisitor<T extends FieldElement<T>>	Default implementation of the FieldMatrixChangingVisitor interface.
DefaultFieldMatrixPreservingVisitor<T extends FieldElement<T>>	Default implementation of the FieldMatrixPreservingVisitor interface.
DefaultRealMatrixChangingVisitor	Default implementation of the RealMatrixChangingVisitor interface.
DefaultRealMatrixPreservingVisitor	Default implementation of the RealMatrixPreservingVisitor interface.
DefaultTransformer	A Default NumberTransformer for java.lang.Numbers and Numeric Strings.
DerivativeException	This exception is made available to users to report the error conditions that are triggered while computing the differential equations.
DescriptiveStatistics	Maintains a dataset of values of a single variable and computes descriptive statistics based on stored data.
Dfp	Decimal floating point library for Java
DfpDec	Subclass of Dfp which hides the radix-10000 artifacts of the superclass.
DfpField	Field for Decimal floating point instances.
DfpField.RoundingMode	Enumerate for rounding modes.
DfpMath	Mathematical routines for use with Dfp.
DifferentiableMultivariateRealFunction	Extension of MultivariateRealFunction representing a differentiable multivariate real function.
DifferentiableMultivariateRealOptimizer	This interface represents an optimization algorithm for scalar differentiable objective functions.
DifferentiableMultivariateVectorialFunction	Extension of MultivariateVectorialFunction representing a differentiable multivariate vectorial function.
DifferentiableMultivariateVectorialOptimizer	This interface represents an optimization algorithm for vectorial differentiable objective functions.
DifferentiableUnivariateMatrixFunction	Extension of UnivariateMatrixFunction representing a differentiable univariate matrix function.
DifferentiableUnivariateRealFunction	Extension of UnivariateRealFunction representing a differentiable univariate real function.
DifferentiableUnivariateVectorialFunction	Extension of UnivariateVectorialFunction representing a differentiable univariate vectorial function.
DimensionMismatchException	Deprecated. in 2.2 (to be removed in 3.0).
DimensionMismatchException	Exception to be thrown when two dimensions differ.
DirectSearchOptimizer	This class implements simplex-based direct search optimization algorithms.
DiscreteDistribution	Base interface for discrete distributions.
Distribution	Base interface for probability distributions.
DividedDifferenceInterpolator	Implements the Divided Difference Algorithm for interpolation of real univariate functions.
DormandPrince54Integrator	This class implements the 5(4) Dormand-Prince integrator for Ordinary Differential Equations.
DormandPrince853Integrator	This class implements the 8(5,3) Dormand-Prince integrator for Ordinary Differential Equations.
DoubleArray	Provides a standard interface for double arrays.
DummyLocalizable	Dummy implementation of the Localizable interface, without localization.
DummyStepHandler	This class is a step handler that does nothing.
DummyStepInterpolator	This class is a step interpolator that does nothing.
DuplicateSampleAbscissaException	Exception thrown when a sample contains several entries at the same abscissa.
EigenDecomposition	An interface to classes that implement an algorithm to calculate the eigen decomposition of a real matrix.
EigenDecompositionImpl	Calculates the eigen decomposition of a real symmetric matrix.
ElitisticListPopulation	Population of chromosomes which uses elitism (certain percentace of the best chromosomes is directly copied to the next generation).
EmbeddedRungeKuttaIntegrator	This class implements the common part of all embedded Runge-Kutta integrators for Ordinary Differential Equations.
EmpiricalDistribution	Represents an empirical probability distribution -- a probability distribution derived from observed data without making any assumptions about the functional form of the population distribution that the data come from.
EmpiricalDistributionImpl	Implements EmpiricalDistribution interface.
Erf	This is a utility class that provides computation methods related to the error functions.
EstimatedParameter	Deprecated. as of 2.0, everything in package org.apache.commons.math.estimation has been deprecated and replaced by package org.apache.commons.math.optimization.general
EstimationException	Deprecated. as of 2.0, everything in package org.apache.commons.math.estimation has been deprecated and replaced by package org.apache.commons.math.optimization.general
EstimationProblem	Deprecated. as of 2.0, everything in package org.apache.commons.math.estimation has been deprecated and replaced by package org.apache.commons.math.optimization.general
Estimator	Deprecated. as of 2.0, everything in package org.apache.commons.math.estimation has been deprecated and replaced by package org.apache.commons.math.optimization.general
EuclideanIntegerPoint	A simple implementation of Clusterable for points with integer coordinates.
EulerIntegrator	This class implements a simple Euler integrator for Ordinary Differential Equations.
EventException	This exception is made available to users to report the error conditions that are triggered by EventHandler
EventHandler	This interface represents a handler for discrete events triggered during ODE integration.
EventHandlerWithJacobians	Deprecated. as of 2.2 the complete package is deprecated, it will be replaced in 3.0 by a completely rewritten implementation
EventState	This class handles the state for one event handler during integration steps.
ExponentialDistribution	The Exponential Distribution.
ExponentialDistributionImpl	The default implementation of ExponentialDistribution.
ExtendedFirstOrderDifferentialEquations	This interface represents a first order differential equations set with a main set of equations and an extension set.
FastCosineTransformer	Implements the Fast Cosine Transform for transformation of one-dimensional data sets.
FastFourierTransformer	Implements the Fast Fourier Transform for transformation of one-dimensional data sets.
FastHadamardTransformer	Implements the Fast Hadamard Transform (FHT).
FastMath	Faster, more accurate, portable alternative to StrictMath.
FastSineTransformer	Implements the Fast Sine Transform for transformation of one-dimensional data sets.
FDistribution	F-Distribution.
FDistributionImpl	Default implementation of FDistribution.
Field<T>	Interface representing a field.
FieldDecompositionSolver<T extends FieldElement<T>>	Interface handling decomposition algorithms that can solve A × X = B.
FieldElement<T>	Interface representing field elements.
FieldLUDecomposition<T extends FieldElement<T>>	An interface to classes that implement an algorithm to calculate the LU-decomposition of a real matrix.
FieldLUDecompositionImpl<T extends FieldElement<T>>	Calculates the LUP-decomposition of a square matrix.
FieldMatrix<T extends FieldElement<T>>	Interface defining field-valued matrix with basic algebraic operations.
FieldMatrixChangingVisitor<T extends FieldElement<?>>	Interface defining a visitor for matrix entries.
FieldMatrixPreservingVisitor<T extends FieldElement<?>>	Interface defining a visitor for matrix entries.
FieldVector<T extends FieldElement<T>>	Interface defining a field-valued vector with basic algebraic operations.
FirstMoment	Computes the first moment (arithmetic mean).
FirstOrderConverter	This class converts second order differential equations to first order ones.
FirstOrderDifferentialEquations	This interface represents a first order differential equations set.
FirstOrderIntegrator	This interface represents a first order integrator for differential equations.
FirstOrderIntegratorWithJacobians	Deprecated. as of 2.2 the complete package is deprecated, it will be replaced in 3.0 by a completely rewritten implementation
Fitness	Fitness of a chromosome.
FixedGenerationCount	Stops after a fixed number of generations.
FixedStepHandler	This interface represents a handler that should be called after each successful fixed step.
FourthMoment	Computes a statistic related to the Fourth Central Moment.
Fraction	Representation of a rational number.
FractionConversionException	Error thrown when a double value cannot be converted to a fraction in the allowed number of iterations.
FractionField	Representation of the fractional numbers field.
FractionFormat	Formats a Fraction number in proper format or improper format.
Frequency	Maintains a frequency distribution.
FunctionEvaluationException	Exception thrown when an error occurs evaluating a function.
Gamma	This is a utility class that provides computation methods related to the Gamma family of functions.
GammaDistribution	The Gamma Distribution.
GammaDistributionImpl	The default implementation of GammaDistribution.
GaussianDerivativeFunction	The derivative of GaussianFunction.
GaussianFitter	Fits points to a Gaussian function (that is, a GaussianFunction).
GaussianFunction	A Gaussian function.
GaussianParametersGuesser	Guesses the parameters (a, b, c, and d) of a ParametricGaussianFunction based on the specified observed points.
GaussianRandomGenerator	This class is a gaussian normalized random generator for scalars.
GaussNewtonEstimator	Deprecated. as of 2.0, everything in package org.apache.commons.math.estimation has been deprecated and replaced by package org.apache.commons.math.optimization.general
GaussNewtonOptimizer	Gauss-Newton least-squares solver.
GeneticAlgorithm	Implementation of a genetic algorithm.
GeometricMean	Returns the geometric mean of the available values.
GillIntegrator	This class implements the Gill fourth order Runge-Kutta integrator for Ordinary Differential Equations .
GLSMultipleLinearRegression	The GLS implementation of the multiple linear regression.
GoalType	Goal type for an optimization problem.
GraggBulirschStoerIntegrator	This class implements a Gragg-Bulirsch-Stoer integrator for Ordinary Differential Equations.
HarmonicCoefficientsGuesser	This class guesses harmonic coefficients from a sample.
HarmonicFitter	This class implements a curve fitting specialized for sinusoids.
HarmonicFunction	Harmonic function of the form f (t) = a cos (ω t + φ).
HasDensity<P>	Deprecated. to be removed in math 3.0
HighamHall54Integrator	This class implements the 5(4) Higham and Hall integrator for Ordinary Differential Equations.
HypergeometricDistribution	The Hypergeometric Distribution.
HypergeometricDistributionImpl	The default implementation of HypergeometricDistribution.
IntegerDistribution	Interface for discrete distributions of integer-valued random variables.
IntegratorException	This exception is made available to users to report the error conditions that are triggered during integration
InvalidMatrixException	Thrown when a system attempts an operation on a matrix, and that matrix does not satisfy the preconditions for the aforementioned operation.
InvalidRepresentationException	Exception indicating that the representation of a chromosome is not valid.
JDKRandomGenerator	Extension of java.util.Random to implement RandomGenerator.
KMeansPlusPlusClusterer<T extends Clusterable<T>>	Clustering algorithm based on David Arthur and Sergei Vassilvitski k-means++ algorithm.
KMeansPlusPlusClusterer.EmptyClusterStrategy	Strategies to use for replacing an empty cluster.
Kurtosis	Computes the Kurtosis of the available values.
LaguerreSolver	Implements the Laguerre's Method for root finding of real coefficient polynomials.
LeastSquaresConverter	This class converts vectorial objective functions to scalar objective functions when the goal is to minimize them.
LegendreGaussIntegrator	Implements the Legendre-Gauss quadrature formula.
LevenbergMarquardtEstimator	Deprecated. as of 2.0, everything in package org.apache.commons.math.estimation has been deprecated and replaced by package org.apache.commons.math.optimization.general
LevenbergMarquardtOptimizer	This class solves a least squares problem using the Levenberg-Marquardt algorithm.
LinearConstraint	A linear constraint for a linear optimization problem.
LinearInterpolator	Implements a linear function for interpolation of real univariate functions.
LinearObjectiveFunction	An objective function for a linear optimization problem.
LinearOptimizer	This interface represents an optimization algorithm for linear problems.
ListPopulation	Population of chromosomes represented by a List.
Localizable	Interface for localizable strings.
LocalizedFormats	Enumeration for localized messages formats used in exceptions messages.
LoessInterpolator	Implements the Local Regression Algorithm (also Loess, Lowess) for interpolation of real univariate functions.
LUDecomposition	An interface to classes that implement an algorithm to calculate the LU-decomposition of a real matrix.
LUDecompositionImpl	Calculates the LUP-decomposition of a square matrix.
MathConfigurationException	Signals a configuration problem with any of the factory methods.
MathException	Base class for commons-math checked exceptions.
MathIllegalArgumentException	Base class for all preconditions violation exceptions.
MathIllegalNumberException	Base class for exceptions raised by a wrong number.
MathIllegalStateException	Base class for all exceptions that signal a mismatch between the current state and the user's expectations.
MathInternalError	Exception triggered when something that shouldn't happen does happen.
MathRuntimeException	Base class for commons-math unchecked exceptions.
MathThrowable	Interface for commons-math throwables.
MathUnsupportedOperationException	Base class for all unsupported features.
MathUtils	Some useful additions to the built-in functions in Math.
MathUtils.OrderDirection	Specification of ordering direction.
MatrixIndexException	Thrown when an operation addresses a matrix coordinate (row, col) which is outside of the dimensions of a matrix.
MatrixUtils	A collection of static methods that operate on or return matrices.
MatrixVisitorException	Thrown when a visitor encounters an error while processing a matrix entry.
Max	Returns the maximum of the available values.
MaxEvaluationsExceededException	Error thrown when a numerical computation exceeds its allowed number of functions evaluations.
MaxIterationsExceededException	Error thrown when a numerical computation exceeds its allowed number of iterations.
Mean	Computes the arithmetic mean of a set of values.
Median	Returns the median of the available values.
MersenneTwister	This class implements a powerful pseudo-random number generator developed by Makoto Matsumoto and Takuji Nishimura during 1996-1997.
MessageFactory	Class for constructing localized messages.
MicrosphereInterpolatingFunction	Interpolating function that implements the Microsphere Projection.
MicrosphereInterpolator	Interpolator that implements the algorithm described in William Dudziak's MS thesis.
MidpointIntegrator	This class implements a second order Runge-Kutta integrator for Ordinary Differential Equations.
Min	Returns the minimum of the available values.
MullerSolver	Implements the Muller's Method for root finding of real univariate functions.
MultidimensionalCounter	Converter between unidimensional storage structure and multidimensional conceptual structure.
MultiDirectional	This class implements the multi-directional direct search method.
MultipleLinearRegression	The multiple linear regression can be represented in matrix-notation.
MultiStartDifferentiableMultivariateRealOptimizer	Special implementation of the DifferentiableMultivariateRealOptimizer interface adding multi-start features to an existing optimizer.
MultiStartDifferentiableMultivariateVectorialOptimizer	Special implementation of the DifferentiableMultivariateVectorialOptimizer interface adding multi-start features to an existing optimizer.
MultiStartMultivariateRealOptimizer	Special implementation of the MultivariateRealOptimizer interface adding multi-start features to an existing optimizer.
MultiStartUnivariateRealOptimizer	Special implementation of the UnivariateRealOptimizer interface adding multi-start features to an existing optimizer.
MultistepIntegrator	This class is the base class for multistep integrators for Ordinary Differential Equations.
MultistepIntegrator.NordsieckTransformer	Transformer used to convert the first step to Nordsieck representation.
MultivariateMatrixFunction	An interface representing a multivariate matrix function.
MultivariateRealFunction	An interface representing a multivariate real function.
MultivariateRealInterpolator	Interface representing a univariate real interpolating function.
MultivariateRealOptimizer	This interface represents an optimization algorithm for scalar objective functions.
MultivariateSummaryStatistics	Computes summary statistics for a stream of n-tuples added using the addValue method.
MultivariateVectorialFunction	An interface representing a multivariate vectorial function.
MutationPolicy	Algorithm used to mutate a chrommosome.
NaNStrategy	Strategies for handling NaN values in rank transformations.
NaturalRanking	Ranking based on the natural ordering on doubles.
NelderMead	This class implements the Nelder-Mead direct search method.
NevilleInterpolator	Implements the Neville's Algorithm for interpolation of real univariate functions.
NewtonSolver	Implements Newton's Method for finding zeros of real univariate functions.
NoDataException	Exception to be thrown when the required data is missing.
NoFeasibleSolutionException	This class represents exceptions thrown by optimizers when no solution fulfills the constraints.
NonLinearConjugateGradientOptimizer	Non-linear conjugate gradient optimizer.
NonMonotonousSequenceException	Exception to be thrown when the a sequence of values is not monotonously increasing or decreasing.
NonSquareMatrixException	Thrown when an operation defined only for square matrices is applied to non-square ones.
NordsieckStepInterpolator	This class implements an interpolator for integrators using Nordsieck representation.
NormalDistribution	Normal (Gauss) Distribution.
NormalDistributionImpl	Default implementation of NormalDistribution.
NormalizedRandomGenerator	This interface represent a normalized random generator for scalars.
NotARotationMatrixException	This class represents exceptions thrown while building rotations from matrices.
NotPositiveDefiniteMatrixException	This class represents exceptions thrown when a matrix expected to be positive definite is not.
NotPositiveException	Exception to be thrown when the argument is negative.
NotStrictlyPositiveException	Exception to be thrown when the argument is negative.
NotSymmetricMatrixException	This class represents exceptions thrown when a matrix expected to be symmetric is not
NullArgumentException	All conditions checks that fail due to a null argument must throw this exception.
NumberIsTooLargeException	Exception to be thrown when a number is too large.
NumberIsTooSmallException	Exception to be thrown when a number is too small.
NumberTransformer	Subclasses implementing this interface can transform Objects to doubles.
ODEIntegrator	This interface defines the common parts shared by integrators for first and second order differential equations.
ODEWithJacobians	Deprecated. as of 2.2 the complete package is deprecated, it will be replaced in 3.0 by a completely rewritten implementation
OLSMultipleLinearRegression	Implements ordinary least squares (OLS) to estimate the parameters of a multiple linear regression model.
OnePointCrossover<T>	One point crossover policy.
OneWayAnova	An interface for one-way ANOVA (analysis of variance).
OneWayAnovaImpl	Implements one-way ANOVA statistics defined in the OneWayAnovaImpl interface.
OpenIntToDoubleHashMap	Open addressed map from int to double.
OpenIntToFieldHashMap<T extends FieldElement<T>>	Open addressed map from int to FieldElement.
OpenMapRealMatrix	Sparse matrix implementation based on an open addressed map.
OpenMapRealVector	This class implements the RealVector interface with a OpenIntToDoubleHashMap backing store.
OptimizationException	Deprecated. in 2.2 (to be removed in 3.0).
OutOfRangeException	Exception to be thrown when some argument is out of range.
ParameterizedODE	Deprecated. as of 2.2 the complete package is deprecated, it will be replaced in 3.0 by a completely rewritten implementation
ParametricGaussianFunction	A Gaussian function.
ParametricRealFunction	An interface representing a real function that depends on one independent variable plus some extra parameters.
PascalDistribution	The Pascal distribution.
PascalDistributionImpl	The default implementation of PascalDistribution.
PearsonsCorrelation	Computes Pearson's product-moment correlation coefficients for pairs of arrays or columns of a matrix.
Percentile	Provides percentile computation.
PermutationChromosome<T>	Interface indicating that the chromosome represents a permutation of objects.
PoissonDistribution	Interface representing the Poisson Distribution.
PoissonDistributionImpl	Implementation for the PoissonDistribution.
PolynomialFitter	This class implements a curve fitting specialized for polynomials.
PolynomialFunction	Immutable representation of a real polynomial function with real coefficients.
PolynomialFunctionLagrangeForm	Implements the representation of a real polynomial function in Lagrange Form.
PolynomialFunctionNewtonForm	Implements the representation of a real polynomial function in Newton Form.
PolynomialSplineFunction	Represents a polynomial spline function.
PolynomialsUtils	A collection of static methods that operate on or return polynomials.
Population	A collection of chromosomes that facilitates generational evolution.
PowellOptimizer	Powell algorithm.
Preconditioner	This interface represents a preconditioner for differentiable scalar objective function optimizers.
Product	Returns the product of the available values.
ProperBigFractionFormat	Formats a BigFraction number in proper format.
ProperFractionFormat	Formats a Fraction number in proper format.
QRDecomposition	An interface to classes that implement an algorithm to calculate the QR-decomposition of a real matrix.
QRDecompositionImpl	Calculates the QR-decomposition of a matrix.
RandomAdaptor	Extension of java.util.Random wrapping a RandomGenerator.
RandomData	Random data generation utilities.
RandomDataImpl	Implements the RandomData interface using a RandomGenerator instance to generate non-secure data and a SecureRandom instance to provide data for the nextSecureXxx methods.
RandomGenerator	Interface extracted from java.util.Random.
RandomKey<T>	Random Key chromosome is used for permutation representation.
RandomKeyMutation	Mutation operator for RandomKeys.
RandomVectorGenerator	This interface represents a random generator for whole vectors.
RankingAlgorithm	Interface representing a rank transformation.
RealConvergenceChecker	This interface specifies how to check if an optimization algorithm has converged.
RealMatrix	Interface defining a real-valued matrix with basic algebraic operations.
RealMatrixChangingVisitor	Interface defining a visitor for matrix entries.
RealMatrixImpl	Deprecated. as of 2.0 replaced by Array2DRowRealMatrix
RealMatrixPreservingVisitor	Interface defining a visitor for matrix entries.
RealPointValuePair	This class holds a point and the value of an objective function at this point.
RealTransformer	Interface for one-dimensional data sets transformations producing real results.
RealVector	Interface defining a real-valued vector with basic algebraic operations.
RealVector.Entry	Class representing a modifiable entry in the vector.
RealVectorFormat	Formats a vector in components list format "{v0; v1; ...; vk-1}".
Relationship	Types of relationships between two cells in a Solver LinearConstraint.
ResizableDoubleArray	A variable length DoubleArray implementation that automatically handles expanding and contracting its internal storage array as elements are added and removed.
RiddersSolver	Implements the Ridders' Method for root finding of real univariate functions.
RombergIntegrator	Implements the Romberg Algorithm for integration of real univariate functions.
Rotation	This class implements rotations in a three-dimensional space.
RotationOrder	This class is a utility representing a rotation order specification for Cardan or Euler angles specification.
RungeKuttaIntegrator	This class implements the common part of all fixed step Runge-Kutta integrators for Ordinary Differential Equations.
SecantSolver	Implements a modified version of the secant method for approximating a zero of a real univariate function.
SecondMoment	Computes a statistic related to the Second Central Moment.
SecondOrderDifferentialEquations	This interface represents a second order differential equations set.
SecondOrderIntegrator	This interface represents a second order integrator for differential equations.
SelectionPolicy	Algorithm used to select a chromosome pair from a population.
SemiVariance	Computes the semivariance of a set of values with respect to a given cutoff value.
SemiVariance.Direction	The direction of the semivariance - either upside or downside.
SimpleEstimationProblem	Deprecated. as of 2.0, everything in package org.apache.commons.math.estimation has been deprecated and replaced by package org.apache.commons.math.optimization.general
SimpleRealPointChecker	Simple implementation of the RealConvergenceChecker interface using only point coordinates.
SimpleRegression	Estimates an ordinary least squares regression model with one independent variable.
SimpleScalarValueChecker	Simple implementation of the RealConvergenceChecker interface using only objective function values.
SimpleVectorialPointChecker	Simple implementation of the VectorialConvergenceChecker interface using only point coordinates.
SimpleVectorialValueChecker	Simple implementation of the VectorialConvergenceChecker interface using only objective function values.
SimplexSolver	Solves a linear problem using the Two-Phase Simplex Method.
SimpsonIntegrator	Implements the Simpson's Rule for integration of real univariate functions.
SingularMatrixException	Thrown when a matrix is singular.
SingularValueDecomposition	An interface to classes that implement an algorithm to calculate the Singular Value Decomposition of a real matrix.
SingularValueDecompositionImpl	Calculates the compact Singular Value Decomposition of a matrix.
Skewness	Computes the skewness of the available values.
SmoothingBicubicSplineInterpolator	Deprecated. This class does not perform smoothing; the name is thus misleading.
SmoothingPolynomialBicubicSplineInterpolator	Generates a bicubic interpolation function.
SparseFieldMatrix<T extends FieldElement<T>>	Sparse matrix implementation based on an open addressed map.
SparseFieldVector<T extends FieldElement<T>>	This class implements the FieldVector interface with a OpenIntToFieldHashMap backing store.
SparseRealMatrix	Marker interface for RealMatrix implementations that require sparse backing storage
SparseRealVector	Marker interface for RealVectors that require sparse backing storage
SpearmansCorrelation	Spearman's rank correlation.
SplineInterpolator	Computes a natural (also known as "free", "unclamped") cubic spline interpolation for the data set.
StandardDeviation	Computes the sample standard deviation.
StatisticalMultivariateSummary	Reporting interface for basic multivariate statistics.
StatisticalSummary	Reporting interface for basic univariate statistics.
StatisticalSummaryValues	Value object representing the results of a univariate statistical summary.
StatUtils	StatUtils provides static methods for computing statistics based on data stored in double[] arrays.
StepHandler	This interface represents a handler that should be called after each successful step.
StepHandlerWithJacobians	Deprecated. as of 2.2 the complete package is deprecated, it will be replaced in 3.0 by a completely rewritten implementation
StepInterpolator	This interface represents an interpolator over the last step during an ODE integration.
StepInterpolatorWithJacobians	Deprecated. as of 2.2 the complete package is deprecated, it will be replaced in 3.0 by a completely rewritten implementation
StepNormalizer	This class wraps an object implementing FixedStepHandler into a StepHandler.
StoppingCondition	Algorithm used to determine when to stop evolution.
StorelessUnivariateStatistic	Extends the definition of UnivariateStatistic with StorelessUnivariateStatistic.increment(double) and StorelessUnivariateStatistic.incrementAll(double[]) methods for adding values and updating internal state.
Sum	Returns the sum of the available values.
SummaryStatistics	Computes summary statistics for a stream of data values added using the addValue method.
SumOfLogs	Returns the sum of the natural logs for this collection of values.
SumOfSquares	Returns the sum of the squares of the available values.
SynchronizedDescriptiveStatistics	Implementation of DescriptiveStatistics that is safe to use in a multithreaded environment.
SynchronizedMultivariateSummaryStatistics	Implementation of MultivariateSummaryStatistics that is safe to use in a multithreaded environment.
SynchronizedSummaryStatistics	Implementation of SummaryStatistics that is safe to use in a multithreaded environment.
TDistribution	Student's t-Distribution.
TDistributionImpl	Default implementation of TDistribution.
TestUtils	A collection of static methods to create inference test instances or to perform inference tests.
ThirdMoment	Computes a statistic related to the Third Central Moment.
ThreeEighthesIntegrator	This class implements the 3/8 fourth order Runge-Kutta integrator for Ordinary Differential Equations.
TiesStrategy	Strategies for handling tied values in rank transformations.
TournamentSelection	Tournament selection scheme.
TransformerMap	This TansformerMap automates the transformation of mixed object types.
TrapezoidIntegrator	Implements the Trapezoidal Rule for integration of real univariate functions.
TricubicSplineInterpolatingFunction	Function that implements the tricubic spline interpolation, as proposed in Tricubic interpolation in three dimensions F.
TricubicSplineInterpolator	Generates a tricubic interpolating function.
TrivariateRealFunction	An interface representing a trivariate real function.
TrivariateRealGridInterpolator	Interface representing a trivariate real interpolating function where the sample points must be specified on a regular grid.
TTest	An interface for Student's t-tests.
TTestImpl	Implements t-test statistics defined in the TTest interface.
UnboundedSolutionException	This class represents exceptions thrown by optimizers when a solution escapes to infinity.
UncorrelatedRandomVectorGenerator	A RandomVectorGenerator that generates vectors with uncorrelated components.
UniformRandomGenerator	This class implements a normalized uniform random generator.
UnitSphereRandomVectorGenerator	Generate random vectors isotropically located on the surface of a sphere.
UnivariateMatrixFunction	An interface representing a univariate matrix function.
UnivariateRealFunction	An interface representing a univariate real function.
UnivariateRealIntegrator	Interface for univariate real integration algorithms.
UnivariateRealIntegratorImpl	Provide a default implementation for several generic functions.
UnivariateRealInterpolator	Interface representing a univariate real interpolating function.
UnivariateRealOptimizer	Interface for (univariate real) optimization algorithms.
UnivariateRealSolver	Interface for (univariate real) rootfinding algorithms.
UnivariateRealSolverFactory	Abstract factory class used to create UnivariateRealSolver instances.
UnivariateRealSolverFactoryImpl	A concrete UnivariateRealSolverFactory.
UnivariateRealSolverImpl	Deprecated. in 2.2 (to be removed in 3.0).
UnivariateRealSolverUtils	Utility routines for UnivariateRealSolver objects.
UnivariateStatistic	Base interface implemented by all statistics.
UnivariateVectorialFunction	An interface representing a univariate vectorial function.
UnknownDistributionChiSquareTest	An interface for Chi-Square tests for unknown distributions.
ValueServer	Generates values for use in simulation applications.
Variance	Computes the variance of the available values.
Vector3D	This class implements vectors in a three-dimensional space.
Vector3DFormat	Formats a 3D vector in components list format "{x; y; z}".
VectorialConvergenceChecker	This interface specifies how to check if a optimization algorithm has converged.
VectorialCovariance	Returns the covariance matrix of the available vectors.
VectorialMean	Returns the arithmetic mean of the available vectors.
VectorialPointValuePair	This class holds a point and the vectorial value of an objective function at this point.
WeibullDistribution	Weibull Distribution.
WeibullDistributionImpl	Default implementation of WeibullDistribution.
WeightedEvaluation	Weighted evaluation for statistics.
WeightedMeasurement	Deprecated. as of 2.0, everything in package org.apache.commons.math.estimation has been deprecated and replaced by package org.apache.commons.math.optimization.general
WeightedObservedPoint	This class is a simple container for weighted observed point in curve fitting.
Well1024a	This class implements the WELL1024a pseudo-random number generator from François Panneton, Pierre L'Ecuyer and Makoto Matsumoto.
Well19937a	This class implements the WELL19937a pseudo-random number generator from François Panneton, Pierre L'Ecuyer and Makoto Matsumoto.
Well19937c	This class implements the WELL19937c pseudo-random number generator from François Panneton, Pierre L'Ecuyer and Makoto Matsumoto.
Well44497a	This class implements the WELL44497a pseudo-random number generator from François Panneton, Pierre L'Ecuyer and Makoto Matsumoto.
Well44497b	This class implements the WELL44497b pseudo-random number generator from François Panneton, Pierre L'Ecuyer and Makoto Matsumoto.
Well512a	This class implements the WELL512a pseudo-random number generator from François Panneton, Pierre L'Ecuyer and Makoto Matsumoto.
ZeroException	Exception to be thrown when zero is provided where it is not allowed.
ZipfDistribution	The Zipf (or zeta) Distribution.
ZipfDistributionImpl	Implementation for the ZipfDistribution.